Modifier list

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A modifier is a value that affects various attributes of a country or province.

Overview[edit]

All modifiers are sorted into one of two internal scopes: country and province. Adding country modifiers to a province scope will not work, and vice versa.

Additionally, there is a unique type of country modifier called the rule modifier. These activate features such as Exploration when applied. Do note, however, most rule modifiers can only be applied in a specific context, i.e. can_bypass_forts can only be used in the Ages file.

All modifiers stack additively. For example, if you apply infantry_cost = 0.1 and then apply infantry_cost = 0.3, the country will have infantry_cost = 0.4.

However, the effect the modifier value has on its base value can be additive or multiplicative. For example: army_tradition = 1 adds the value to the base Army Tradition, whereas infantry_cost = 0.1 multiplies the base value by the modifier value.

The following examples are mostly positive(green text in game) effects.

Country modifiers[edit]

Military[edit]

Modifier Example Description Effect Type Version Added
army_tradition army_tradition = 0.5 Adds to the rate of Army Tradition gained each year. Additive 1.1
army_tradition_decay army_tradition_decay = -0.1 Adds to the decay rate of Army Tradition. Additive 1.1
army_tradition_from_battle army_tradition_from_battle = 0.05 Modifies the Army Tradition bonus when gained through battles. Multiplicative 1.18
yearly_army_professionalism yearly_army_professionalism = 0.1 Modifies the rate of Army Professionalism gained each year. Multiplicative 1.23
drill_gain_modifier drill_gain_modifier = 0.1 Modifies the army drill gains while drilling Multiplicative 1.23
drill_decay_modifier drill_decay_modifier = -0.1 Modifies the army drill decay rate per year. Multiplicative 1.24
infantry_cost infantry_cost = -0.1 Modifies the base cost of infantry units. Multiplicative 1.1
infantry_power infantry_power = 0.1 Modifies the power infantry gain from unit pips. Multiplicative 1.1
cavalry_cost cavalry_cost = -0.1 Modifies the base cost of cavalry units. Multiplicative 1.1
cavalry_power cavalry_power = 0.1 Modifies the power cavalry gain from unit pips. Multiplicative 1.1
artillery_cost artillery_cost = -0.1 Modifies the base cost of artillery units. Multiplicative 1.1
artillery_power artillery_power = 0.1 Modifies the power artillery gain from unit pips. Multiplicative 1.1
cav_to_inf_ratio cav_to_inf_ratio = 0.1 Adds to the ratio required to negate the Insufficient Support penalty. Additive 1.20
cavalry_flanking cavalry_flanking = 0.1 Modifies the effectiveness of cavalry flanking. Multiplicative 1.18
artillery_bonus_vs_fort artillery_bonus_vs_fort = 1 Adds to the bonus artillery get versus forts. Additive 1.20
backrow_artillery_damage backrow_artillery_damage = 0.1 Modifies the bonus damage artillery inflict when in the backrow during combat. Multiplicative 1.20
discipline discipline = 0.1 Modifies the discipline of land units. Multiplicative 1.1
mercenary_discipline mercenary_discipline = 0.1 Modifies the discipline of mercenary units. Multiplicative 1.20
land_morale land_morale = 0.1 Modifies the land morale of land units. Multiplicative 1.1
defensiveness defensiveness = 0.25 Modifies the siege defensiveness that affects siege phase length. Multiplicative 1.1
siege_ability siege_ability = 0.1 Modifies the siege ability that affects siege phase length. Reverse concept of defensiveness. Multiplicative 1.6
movement_speed movement_speed = 0.1 Modifies the base movement speed for all land units. Multiplicative 1.18
fire_damage fire_damage = 0.1 Modifies the fire damage done by land units. Multiplicative 1.18
fire_damage_received fire_damage_received = -0.1 Modifies the fire damage taken by land units. Multiplicative 1.18
shock_damage shock_damage = 0.1 Modifies the shock damage done by land units. Multiplicative 1.18
shock_damage_received shock_damage_received = -0.1 Modifies the shock damage taken by land units. Multiplicative 1.18
recover_army_morale_speed recover_army_morale_speed = 0.1 Modifies the army morale recovery speed. Multiplicative 1.1
siege_blockade_progress siege_blockade_progress = 1 Modifies the bonus siege status by blockaded. Additive 1.20
reserves_organisation reserves_organisation = 0.1 Modifies the morale damage taken by units in reserves (i.e. not in battle, but engaged with another unit) Multiplicative 1.23
land_attrition land_attrition = -0.1 Modifies the attrition taken by land units. Multiplicative 1.1
reinforce_cost_modifier reinforce_cost_modifier = -0.1 Modifies the cost of reinforcements when units are reinforced. Multiplicative 1.19
reinforce_speed reinforce_speed = 0.1 Modifies the rate at which units are reinforced with new men. Multiplicative 1.1
manpower_recovery_speed manpower_recovery_speed = 0.1 Modifies the rate at which manpower is recovered. Multiplicative 1.1
global_manpower global_manpower = 1 Adds to the country's total manpower pool. 1 equals 1000 men. Additive 1.1
global_manpower_modifier global_manpower_modifier = 0.1 Modifies a country's total manpower pool. Multiplicative 1.1
global_regiment_cost global_regiment_cost = -0.1 Modifies the base unit cost for all land units. Multiplicative 1.1
global_regiment_recruit_speed global_regiment_recruit_speed = -0.1 Modifies the base speed at which land units are recruited. Multiplicative 1.1
land_forcelimit land_forcelimit = 1 Adds to a country's forcelimit. Additive 1.1
land_forcelimit_modifier land_forcelimit_modifier = -0.1 Modifies a country's forcelimit. Multiplicative 1.1
land_maintenance_modifier land_maintenance_modifier = -0.1 Modifies the maintenance cost of all land units. Multiplicative 1.1
mercenary_cost mercenary_cost = -0.1 Modifies the base cost for mercenary units. Multiplicative 1.1
merc_maintenance_modifier merc_maintenance_modifier = -0.1 Modifies the maintenance cost of all mercenary units. Multiplicative 1.1
possible_condottieri possible_condottieri = 0.5 Modifies the base condottieri limit. Multiplicative 1.16
possible_mercenaries possible_mercenaries = 0.5 Modifies the base mercenary limit. Multiplicative 1.1
hostile_attrition hostile_attrition = 1 Adss to the attrition enemies take in a country's provinces. Additive 1.1
garrison_size garrison_size = 0.1 Modifies the base garrison size in provinces. Multiplicative 1.12
global_garrison_growth global_garrison_growth = 0.1 Modifies the base garrison growth in provinces. Multiplicative 1.1
fort_maintenance_modifier fort_maintenance_modifier = -0.1 Modifies the base fort maintenance cost. Multiplicative 1.12
rival_border_fort_maintenance rival_border_fort_maintenance = -0.1 Modifies the base fort maintenance cost for forts in provinces that border rivals. Multiplicative 1.20
war_exhaustion war_exhaustion = -0.1 Adds to the monthly war exhaustion rate. Additive 1.1
war_exhaustion_cost war_exhaustion_cost = -0.1 Modifies the diplomatic power cost for reducing war exhaustion. Multiplicative 1.1
leader_land_fire leader_land_fire = 1 Adds to the minimum fire pip count a leader can be generated with. Additive 1.6
leader_land_manuever leader_land_manuever = 1 Adds to the minimum manuever pip count a leader can be generated with. Additive 1.6
leader_land_shock leader_land_shock = 1 Adds to the minimum shock pip count a leader can be generated with. Additive 1.6
leader_siege leader_siege = 1 Adds to the minimum siege pip count a leader can be generated with. Additive 1.6
general_cost general_cost = -0.1 Modifies the base military power cost for recruiting Generals. Multiplicative 1.23
free_leader_pool free_leader_pool = 1 Adds to the maximum amount of free leaders. Additive 1.1
raze_power_gain raze_power_gain = 0.1 Modifies the amount of monarch power gained from razing. Multiplicative 1.14
loot_amount loot_amount = 0.1 Modifies the amount of loot taken at once during looting. Multiplicative 1.12
prestige_from_land prestige_from_land = 0.1 Modifies the prestige bonus from combat. Multiplicative 1.11
amount_of_banners amount_of_banners = 0.1 Modifies the maximum amount of banners available. Multiplicative 1.20
war_taxes_cost_modifier war_taxes_cost_modifier = -0.1 Modifies the military power cost for raising war taxes. Multiplicative 1.20
leader_cost leader_cost = -0.1 Modifies the military power cost for hiring leaders. Multiplicative 1.26

Navy[edit]

Modifier Example Description Effect Type Version Added
navy_tradition navy_tradition = 1 Adds to the yearly Navy Tradition rate. Additive 1.1
navy_tradition_decay navy_tradition_decay = -0.1 Adds to the decay rate of Navy Tradition. Additive 1.1
naval_tradition_from_battle naval_tradition_from_battle = 0.1 Modifies the base Navy Tradition gained from battles. Multiplicative 1.18
heavy_ship_cost heavy_ship_cost = -0.1 Modifies the base cost of heavy ships. Multiplicative 1.1
heavy_ship_power heavy_ship_power = 0.1 Modifies the power heavy ships gain from unit pips. Multiplicative 1.1
light_ship_cost light_ship_cost = -0.1 Modifies the base cost of light ships. Multiplicative 1.1
light_ship_power light_ship_power = 0.1 Modifies the power light ships gain from unit pips. Multiplicative 1.1
galley_cost galley_cost = -0.1 Modifies the base cost of galley ships. Multiplicative 1.1
galley_power galley_power = 0.1 Modifies the power galley ships gain from unit pips. Multiplicative 1.1
transport_cost transport_cost = -0.1 Modifies the base cost of transport ships. Multiplicative 1.1
transport_power transport_power = 0.1 Modifies the power transport ships gain from unit pips. Multiplicative 1.1
global_ship_cost global_ship_cost = -0.1 Modifies the base cost of all ships. Multiplicative 1.1
global_ship_recruit_speed global_ship_recruit_speed = -0.1 Modifies the base recruitmend speed of all ships. Multiplicative 1.1
global_ship_repair global_ship_repair = 0.1 Modifies the base repair speed (in port) of all ships. Multiplicative 1.7
naval_forcelimit naval_forcelimit = 1 Adds to a country's naval forcelimit. Additive 1.1
naval_forcelimit_modifier naval_forcelimit_modifier = 0.1 Modifies a country's naval forcelimit. Multiplicative 1.1
naval_maintenance_modifier naval_maintenance_modifier = -0.1 Modifies the naval maintenance for all ships. Multiplicative 1.1
global_sailors global_sailors = 1000 Adds to a country's maximum sailor pool. Additive 1.1
global_sailors_modifier global_sailors_modifier = 0.1 Modifies a country's maximum sailor pool. Multiplicative 1.16
sailor_maintenance_modifer sailor_maintenance_modifer = -0.1 Modifies the sailor maintenance for all ships. Multiplicative 1.16
sailors_recovery_speed sailors_recovery_speed = 0.1 Modifies the sailor recovery rate for all ships. Multiplicative 1.16
blockade_efficiency blockade_efficiency = 0.1 Modifies the efficiency of blockades against enemies. Multiplicative 1.1
capture_ship_chance capture_ship_chance = 0.1 Adds to the chance for ship capture during naval battles. Additive 1.18
global_naval_engagement_modifier global_naval_engagement_modifier = 0.1 Modifies the maximum naval engagement width. Multiplicative 1.16
naval_attrition naval_attrition = -0.1 Modifies the naval attrition taken by ships. Multiplicative 1.1
naval_morale naval_morale = 0.1 Modifies the naval morale of all ships. Multiplicative 1.1
ship_durability ship_durability = 0.1 Modifies the durability of all ships. (discipline for ships) Multiplicative 1.7
sunk_ship_morale_hit_recieved sunk_ship_morale_hit_recieved = -0.1 Modifies the morale damage taken during battle by losing ships. Multiplicative 1.18
recover_navy_morale_speed recover_navy_morale_speed = 0.1 Modifies the morale recovery rate of ships. Multiplicative 1.1
prestige_from_naval prestige_from_naval = 0.1 Modifies the prestige gained through naval battles. Multiplicative 1.11
leader_naval_fire leader_naval_fire = 1 Adds to the minimum fire pip count a leader can be generated with. Additive 1.6
leader_naval_manuever leader_naval_manuever = 1 Adds to the minimum manuever pip count a leader can be generated with. Additive 1.6
leader_naval_shock leader_naval_shock = 1 Adds to the minimum shock pip count a leader can be generated with. Additive 1.6
own_coast_naval_combat_bonus own_coast_naval_combat_bonus = 1.0 Modifies the combat bonus navies gain when sailing in coastal tiles that border their home nation. Multiplicative 1.26

Diplomacy[edit]

Modifier Example Description Effect Type Version Added
diplomats diplomats = 1 Adds to a country's diplomat count. Additive 1.1
diplomatic_reputation diplomatic_reputation = 1 Adds to a country's diplomatic reputation. Additive 1.1
diplomatic_upkeep diplomatic_upkeep = 1 Adds to the maximum number of free diplomatic relations. Additive 1.1
envoy_travel_time envoy_travel_time = -0.2 Modifies diplomat travel time during actions. Multiplicative 1.6
fabricate_claims_cost fabricate_claims_cost= -0.2 Modifies spy network cost for fabricating claim. Multiplicative 1.1
improve_relation_modifier improve_relation_modifier = 0.2 Modifies the speed of the Improve Relations diplomatic action. Multiplicative 1.18
vassal_forcelimit_bonus vassal_forcelimit_bonus = 0.2 Modifies the bonus to a country's forcelimit from their subjects. Multiplicative 1.7
vassal_income vassal_income = 0.2 Modifies the bonus to a country's income from their subjects. Multiplicative 1.1
ae_impact ae_impact = -0.2 Modifies the total size of Aggressive Expansion gained during actions that confer it. Multiplicative 1.6
claim_duration claim_duration = 0.2 Modifies the duration of claims. Multiplicative 1.20
diplomatic_annexation_cost diplomatic_annexation_cost = -0.2 Modifies the diplomatic power cost for annexation. Multiplicative 1.7
province_warscore_cost province_warscore_cost = -0.2 Modifies the warscore cost for taking provinces. Multiplicative 1.8
unjustified_demands unjustified_demands = -0.2 Modifies the weighting of demands in peace treaties. Multiplicative 1.1
enemy_core_creation enemy_core_creation = 0.2 Modifies the cost of coring provinces for enemies that have your cores. Multiplicative 1.1
rival_change_cost rival_change_cost = -0.2 Modifies the diplomatic power cost to change rivals. Multiplicative 1.20
justify_trade_conflict_cost justify_trade_conflict_cost = -0.2 Modifies the spy network cost to justify trade conflicts. Multiplicative 1.26

Economy[edit]

Modifier Example Description Effect Type Version Added
global_tax_income global_tax_income = 12 Adds to the base tax income per year (i.e. 12 equals 1 extra per month). Additive 1.10
global_tax_modifier global_tax_modifier = 0.05 Modifies the base tax income by a percentage. Multiplicative 1.1
production_efficiency production_efficiency = 0.05 Modifies the base production income by a percentage. Multiplicative 1.1
state_maintenance_modifier state_maintenance_modifier = -0.25 Modifies the maintenance cost for states. Multiplicative 1.16
inflation_action_cost inflation_action_cost = -0.1 Modifies the administrative power cost for reducing inflation. Multiplicative 1.2
inflation_reduction inflation_reduction = 0.1 Adds to the base yearly inflation rate. Additive 1.1
interest interest = -1 Adds to the base interest rate. Additive 1.1
development_cost development_cost = -0.1 Modifies the development cost for provinces. Multiplicative 1.12
build_cost build_cost = -0.1 Modifies all building costs. Multiplicative 1.1
build_time build_time = -0.25 Modifies all building construction times. Multiplicative 1.1
administrative_efficiency administrative_efficiency = 0.2 Modifies the base core creation cost, diplo-annexation costs and the impact of province development on overextension and warscore cost. Multiplicative 1.20
core_creation core_creation = -0.1 Modifies the base core creation cost. Multiplicative 1.1
core_decay_on_your_own core_decay_on_your_own = -0.1 Modifies the rate at which the cores of a country will decay when under the ownership of a different country. Multiplicative 1.20

Technology[edit]

Modifier Example Description Effect Type Version Added
<tech>_cost_modifier adm_tech_cost_modifier = -0.1 Modifies the monarch power cost of <tech> technologies.
Generated automatically for all technology tables in /Europa Universalis IV/common/technology.txt.
Multiplicative 1.1
technology_cost technology_cost = -0.1 Modifies the monarch power cost of all technologies. Multiplicative 1.1
idea_cost idea_cost = -0.1 Modifies the monarch power cost of purchasable ideas. Multiplicative 1.1
embracement_cost embracement_cost = -0.1 Modifies the ducat cost for embracing an institution. Multiplicative 1.18
global_institution_spread global_institution_spread = 0.1 Modifies the rate of spread for institutions in all owned provinces. Multiplicative 1.18
institution_spread_from_true_faith institution_spread_from_true_faith = 0.1 Modifies the rate of spread for institutions in owned provinces following the owner's religion. Multiplicative 1.20
native_advancement_cost native_advancement_cost = -0.2 Modifies the monarch power cost of native advancements. Multiplicative 1.4
all_power_cost all_power_cost = -0.1 Modifies the monarch power cost of every action that costs monarch power. Multiplicative 1.16
innovativeness_gain innovativeness_gain = 0.5 Modifies the amount of Innovativeness gained Multiplicative 1.25
free_adm_policy free_adm_policy = 1 Modifies the amount of free Administrative policies. Additive 1.26
free_dip_policy free_dip_policy = 1 Modifies the amount of free Diplomatic policies. Additive 1.26
free_mil_policy free_mil_policy = 1 Modifies the amount of free Military policies. Additive 1.26
possible_adm_policy possible_adm_policy = 1 Modifies the amount of Administrative policy slots. Additive 1.26
possible_dip_policy possible_dip_policy = 1 Modifies the amount of Diplomatic policy slots. Additive 1.26
possible_mil_policy possible_mil_policy = 1 Modifies the amount of Military policy slots. Additive 1.26
free_policy free_policy = 1 Modifies the amount of policy slots. Additive 1.26

Court[edit]

Modifier Example Description Effect Type Version Added
prestige prestige = 0.5 Adds to the base yearly rate of prestige. Additive 1.1
prestige_decay prestige_decay = -0.01 Adds to the base rate of prestige decay. Additive 1.1
monthly_splendor monthly_splendor = 1 Adds to the monthly rate of splendor points. Additive 1.20
yearly_corruption yearly_corruption = -0.1 Adds to the yearly rate of corruption. Additive 1.16
advisor_cost advisor_cost = -0.25 Modifies the base cost of advisors. Multiplicative 1.1
advisor_pool advisor_pool = 1 Adds to the pool size for advisors. Additive 1.1
female_advisor_chance female_advisor_chance = 0.1 Modifies the base chance rate for female advisors. Multiplicative 1.12
heir_chance heir_chance = 0.5 Modifies the base chance for an heir during the heir generation tick. Multiplicative 1.1
monarch_admin_power monarch_admin_power = 1 Adds to the base ADM skill a ruler, heir and consort can be generated with.

Does not effect rulers created with fixed = yes.

Additive 1.20
monarch_diplomatic_power monarch_diplomatic_power = 1 Adds to the base DIP skill a ruler, heir and consort can be generated with.

Does not effect rulers created with fixed = yes.

Additive 1.20
monarch_military_power monarch_military_power = 1 Adds to the base MIL skill a ruler, heir and consort can be generated with.

Does not effect rulers created with fixed = yes.

Additive 1.20
adm_advisor_cost adm_advisor_cost = -0.1 Modifies the cost of hiring an Administrative advisor. Multiplicative 1.26
dip_advisor_cost dip_advisor_cost = -0.1 Modifies the cost of hiring an Diplomatic advisor. Multiplicative 1.26
mil_advisor_cost mil_advisor_cost = -0.1 Modifies the cost of hiring an Military advisor. Multiplicative 1.26

Government[edit]

Modifier Example Description Effect Type Version Added
yearly_absolutism yearly_absolutism = 0.1 Adds to the yearly base rate of absolutism. Additive 1.20
max_absolutism max_absolutism = 10 Adds to the maximum value of absolutism. Internally absolutism bonuses do not scale above 100. Additive 1.20
max_states max_states = 5 Adds to the maximum number of states a country can support. Additive 1.16
legitimacy legitimacy = 1 Adds to the yearly rate of legitimacy.
Does not appear or have an effect if a country's government does not use legitimacy.
Additive 1.1
republican_tradition republican_tradition = 0.5 Adds to the yearly rate of republican tradition.
Does not appear or have an effect if a country's government does not use republican tradition.
Additive 1.1
devotion devotion = 1 Adds to the yearly rate of devotion.
Does not appear or have an effect if a country's government does not use devotion.
Additive 1.12
horde_unity horde_unity = 1 Adds to the yearly rate of horde unity.
Does not appear or have an effect if a country's government does not use horde unity.
Additive 1.14
meritocracy meritocracy = 1 Adds to the yearly rate of meritocracy. Does not appear or have an effect if a country's government does not use meritocracy. Additive 1.20
monthly_militarized_society monthly_militarized_society = 0.05 Adds to the monthly rate of militarisation for governments with the militarisation mechanic. Additive 1.18
yearly_tribal_allegiance yearly_tribal_allegiance = 0.05 Adds to the yearly rate of tribal allegiance for governments with the tribal allegiance mechanic. Additive 1.23
<faction>_influence <faction>_influence = 0.1 Adds to the monthly rate of faction influence.
Generated automatically for all factions in /Europa Universalis IV/common/factions.
Additive 1.1
imperial_authority imperial_authority = 0.05 Modifies the impact of Imperial Authority gains. Multiplicative 1.1
imperial_authority_value imperial_authority_value = 0.1 Adds to the rate of Imperial Authority gained per month. Additive 1.1
imperial_mandate imperial_mandate = 0.1 Adds to the rate of Mandate gained per month. Additive 1.21
election_cycle election_cycle = 1 Adds to the duration of an election cycle for the current nation. Negative values shorten the duration, positive values add to it. Additive 1.26
candidate_random_bonus candidate_random_bonus = 1 Adds to the randomized stats a republican candidate during elections. Additive 1.26
reelection_cost reelection_cost = -0.1 Modifies the cost in Republican Tradition when re-electing candidates. Multiplicative 1.26
reform_progress_growth reform_progress_growth = 0.1 Adds to the rate of government reform progress gain. Additive 1.26

Culture[edit]

Modifier Example Description Effect Type Version Added
culture_conversion_cost culture_conversion_cost = -0.25 Modifies the diplomatic power cost for culture conversion in provinces. Multiplicative 1.7
num_accepted_cultures num_accepted_cultures = 1 Adds to the maximum number of accepted cultures a country can have. Additive 1.18
same_culture_advisor_cost same_culture_advisor_cost = -0.5 Modifies the advisor cost for advisors that share the same culture as the country's court they're in. Multiplicative 1.23
promote_culture_cost promote_culture_cost = -0.25 Modifies the diplomatic power cost for promoting a culture. Multiplicative 1.23

Stability[edit]

Modifier Example Description Effect Type Version Added
global_unrest global_unrest = -2 Adds to the base unrest value. Additive 1.8
stability_cost_modifier stability_cost_modifier = -0.1 Modifies the administrative power cost of raising stability. Multiplicative 1.1
global_autonomy global_autonomy = -0.05 Adds to the monthly rate of autonomy in owned provinces. Additive 1.8
min_autonomy min_autonomy = 50 Sets the minimum autonomy level allowed in all owned provinces. Constant 1.8
autonomy_change_time autonomy_change_time = -0.25 Modifies the cooldown for the autonomy reduction and increase buttons. Multiplicative 1.8
harsh_treatment_cost harsh_treatment_cost = -0.2 Modifies the military power cost for using harsh treatment. Multiplicative 1.20
years_of_nationalism years_of_nationalism = -5 Adds to the base separatism value of provinces when conquered. Additive 1.7
min_autonomy_in_territories min_autonomy_in_territories = 0.1 Modifies the minimum autonomy experienced in territories. Multiplicative 1.26

Subject[edit]

Modifier Example Description Effect Type Version Added
liberty_desire liberty_desire = -10 Adds to subject liberty desire against their overlord. Additive 1.4
liberty_desire_from_subject_development liberty_desire_from_subject_development = -0.25 Adds to the subject liberty desire from development against their overlord. Multiplicative 1.20
reduced_liberty_desire reduced_liberty_desire = 10 Adds to the liberty desire subjects have against their overlord. Applied to the overlord. Additive 1.17
reduced_liberty_desire_on_same_continent reduced_liberty_desire_on_same_continent = 10 Adds to the liberty desire subjects have against their overlord if on the same continent. Applied to the overlord. Additive 1.20

Espionage[edit]

Modifier Example Description Effect Type Version Added
spy_offence spy_offence = 0.1 Modifies the base effectiveness of spies against enemies. Multiplicative 1.1
global_spy_defence global_spy_defence = 0.1 Modifies the base effectiveness of counter-espionage against enemy spies. Multiplicative 1.1
discovered_relations_impact discovered_relations_impact = -0.1 Modifies the relations impact applied to a country when discovered commiting an espionage action. Multiplicative 1.1
rebel_support_efficiency rebel_support_efficiency = 0.5 Modifies the effectiveness of supported rebels in other countries. Multiplicative 1.1

Religion[edit]

Modifier Example Description Effect Type Version Added
global_missionary_strength global_missionary_strength = 0.03 Adds to the base missionary strength against all religions. Additive 1.1
global_heretic_missionary_strength global_heretic_missionary_strength = 0.03 Adds to the base missionary strength against heretic religions. Additive 1.6
missionaries missionaries = 1 Adds to the base missionary count for a country. Additive 1.1
religious_unity religious_unity = 0.5 Adds to the base religious unity value for a country. Additive 1.1
tolerance_own tolerance_own = 1 Adds to the base tolerance for the true faith within a country. Additive 1.1
tolerance_heretic tolerance_heretic = 1 Adds to the base tolerance for heretics within a country. Additive 1.1
tolerance_heathen tolerance_heathen = 1 Adds to the base tolerance for heathens within a country. Additive 1.1
papal_influence papal_influence = 0.5 Adds to the rate of papal influence gained per year. Additive 1.1
church_power_modifier church_power_modifier = 0.5 Modifies the effectiveness of church power gains. Multiplicative 1.12
monthly_fervor_increase monthly_fervor_increase = 1 Adds to the rate of fervor gained per month. Additive 1.1
harmonization_speed harmonization_speed = 0.2 Modifies the rate at which harmonization occurs. Multiplicative 1.1
yearly_harmony yearly_harmony = 1 Adds to the rate of harmony gained per year. Additive 1.20
monthly_piety monthly_piety = 0.1 Adds to the rate of piety gained per month. Additive 1.22
monthly_karma monthly_karma = 0.1 Adds to the rate of karma gained per month. Additive 1.22
enforce_religion_cost enforce_religion_cost = -0.5 Modifies the warscore cost for the Enforce Religion peace term. Multiplicative 1.20
prestige_per_development_from_conversion prestige_per_development_from_conversion = 0.5 Adds to the prestige bonus gained per development when successfully converting a province to a state religion. Additive 1.20
warscore_cost_vs_other_religion warscore_cost_vs_other_religion = -0.25 Modifies the warscore costs for peace terms whilst in war against countries of a different religion. Multiplicative 1.20

Colonisation[edit]

Modifier Example Description Effect Type Version Added
colonists colonists = 1 Modifies the base colonist count for a country. Additive 1.1
colonist_placement_chance colonist_placement_chance = 0.05 Adds to the base colonial placement chance for colonists, which is the chance that additional settlers will be spawned whilst the colonist is present. Additive 1.1
global_colonial_growth global_colonial_growth = 10 Adds to the base yearly colonial growth gain. Additive 1.1
range range = 0.5 Modifies the base colonisation range, used for exploration, colonisation and coring province that border sea. Multiplicative 1.1
native_uprising_chance native_uprising_chance = -0.25 Adds to the chance of native uprisings in a colony province. Multiplicative 1.14
native_assimilation native_assimilation = 0.25 Modifies the bonus from assimilation in colonies. Native assimilation is bonus to goods produced depends on the native population. Multiplicative 1.14
migration_cooldown migration_cooldown = -0.2 Modifies the cooldown for the migration action for primitive nations that can migrate. Multiplicative 1.4
global_tariffs global_tariffs = 0.25 Modifies the tariff income from colonial nations. Multiplicative 1.1

Trade[edit]

Modifier Example Description Effect Type Version Added
caravan_power caravan_power = 0.2 Modifies the bonus trade power inland nodes receive from trade power sources. Multiplicative 1.10
merchants merchants = 1 Adds to the base merchant count for a country. Additive 1.1
placed_merchant_power placed_merchant_power = 3 Modifies the additional trade power when a merchant present in a tradenode. Additive 1.20
global_trade_power global_trade_power = 0.1 Modifies the trade power in all tradenodes for a country. Multiplicative 1.1
global_foreign_trade_power global_foreign_trade_power = 0.1 Modifies the trade power for a country in tradenodes that are not domestic. Multiplicative 1.1
global_own_trade_power global_own_trade_power = 0.1 Modifies the trade power for a country in tradenodes that are domestic. Multiplicative 1.1
global_prov_trade_power_modifier global_prov_trade_power_modifier = 0.1 Modifies the base trade power of owned provinces. Multiplicative 1.1
global_trade_goods_size_modifier global_trade_goods_size_modifier = 0.1 Modifies the base trade good size of owned provinces. Multiplicative 1.12
trade_efficiency trade_efficiency = 0.1 Modifies a country's trade income. (Maximum is 200%) Multiplicative 1.1
trade_range_modifier trade_range_modifier = 0.25 Modifies the trade range used to determine if a country can place a merchant in a tradenode. Multiplicative 1.1
trade_steering trade_steering = 0.1 Modifies the bonus to trade power used for steering when determining which outgoing node trade is steered to. If you have a merchant present, it also slightly increases the outgoing value. Multiplicative 1.1
global_ship_trade_power global_ship_trade_power = 0.2 Modifies the trade power ships grant when protecting trade. Multiplicative 1.16
privateer_efficiency privateer_efficiency = 0.2 Modifies the effectiveness of privateers in a tradenode. Multiplicative 1.6
embargo_efficiency embargo_efficiency = 0.25 Modifies the effectiveness of embargoing another country. Multiplicative 1.1
ship_power_propagation ship_power_propagation = 0.1 Modifies the propagation of trade power from ships protecting trade. Multiplicative 1.20

Province modifiers[edit]

Military[edit]

Modifier Example Description Effect Type Version Added
max_attrition max_attrition = 5 Adds to the maximum attrition that can be experienced in a province. Additive 1.1
attrition attrition = 5 Adds to the base attrition in a province. Additive 1.1
local_hostile_attrition local_hostile_attrition = 5 Adds to the base attrition for enemies in a province. Additive 1.4
fort_level fort_level = 1 Adds to the fort level in a province, determining how difficult it is to siege. Additive 1.8
garrison_growth garrison_growth = 0.05 Modifies the rate of garrison growth in a province. Multiplicative 1.1
local_defensiveness local_defensiveness = 0.1 Modifies the defensiveness of a province, impacting siege phase length. Multiplicative 1.1
local_friendly_movement_speed local_friendly_movement_speed = 0.1 Modifies the movement speed of units in a province that are considered friendly. Multiplicative 1.20
local_hostile_movement_speed local_hostile_movement_speed = 0.1 Modifies the movement speed of units in a province that are considered enemies. Multiplicative 1.20
local_manpower local_manpower = 1 Adds to the base manpower value. 1 equals 1000 men. Additive 1.1
local_manpower_modifier local_manpower_modifier = 0.25 Modifies the manpower efficiency in a province. Multiplicative 1.1
local_regiment_cost local_regiment_cost = -0.25 Modifies the recruitment cost of land units in a province. Multiplicative 1.1
regiment_recruit_speed regiment_recruit_speed = -0.25 Modifies the recruitment speed of land units in a province. Multiplicative 1.1
supply_limit supply_limit = 1 Adds to the base supply limit of a province. Additive 1.1
supply_limit_modifier supply_limit_modifier = 0.25 Modifies the supply limit efficiency of a province. Multiplicative 1.1
local_amount_of_banners local_amount_of_banners = 0.1 Modiifes the amount of banners that can be raised from a province. Multiplicative 1.20

Navy[edit]

Modifier Example Description Effect Type Version Added
local_naval_engagement_modifier local_naval_engagement_modifier = 0.1 Modifies the naval engagement width in a province. Only usable in sea provinces. Multiplicative 1.16
local_sailors local_sailors = 1 Adds to the sailors value for a province. 1 equals 1 sailor. Additive 1.16
local_sailors_modifier local_sailors_modifier = 0.1 Modifies the sailors efficiency of a province. Multiplicative 1.16
local_ship_cost local_ship_cost = -0.2 Modifies the cost of ship recruitment in a province. Multiplicative 1.1
local_ship_repair local_ship_repair = 0.2 Modifies the speed of ship repair in a province. Multiplicative 1.1
ship_recruit_speed ship_recruit_speed = -0.25 Modifies the recruitment speed of ships in a province. Multiplicative 1.1

Colonisation[edit]

Modifier Example Description Effect Type Version Added
local_colonial_growth local_colonial_growth = 10 Adds to the colonial growth in a colony province. Additive 1.1
local_colonist_placement_chance local_colonist_placement_chance = 0.05 Adds to the placement chance in a colony province. Additive 1.1

Economy[edit]

Modifier Example Description Effect Type Version Added
inflation_reduction_local inflation_reduction_local = 0.1 Adds to the base yearly inflation value. Requires every province in a country to have the modifier to work however. Additive 1.1
local_state_maintenance_modifier local_state_maintenance_modifier = -0.25 Modifies the state maintenance cost for the state that a province belongs to. Multiplicative 1.16
local_build_cost local_build_cost = -0.25 Modifies the cost of constructing buildings in a province. Multiplicative 1.1
local_build_time local_build_time = -0.25 Modifies the construction speed of buildings in a province. Multiplicative 1.1
local_monthly_devastation local_monthly_devastation = -0.1 Adds to the devastation rate in a province. Additive 1.20
local_production_efficiency local_production_efficiency = 0.1 Modifies the production efficiency in a province. Multiplicative 1.1
local_tax_modifier local_tax_modifier = 0.1 Modifies the tax efficiency in a province. Multiplicative 1.1
tax_income tax_income = 12 Adds to the yearly tax income of a province. Additive 1.10
allowed_num_of_buildings allowed_num_of_buildings = 1 Adds to the maximum number of building slots in a province. Additive 1.12
local_development_cost local_development_cost = -0.1 Modifies the monarch power cost for development in a province.
Converts to local_tax_modifier in for non-Common Sense owners.
Multiplicative 1.12
local_institution_spread local_institution_spread = 0.1 Modifies the spread of institutions in a province. Multiplicative 1.18
local_core_creation local_core_creation = -0.25 Modifies the cost of coring in a province. Multiplicative 1.18
cs_only_local_development_cost cs_only_local_development_cost = -0.25 Modifies the monarch power cost for development in a province.
Does not appear or affect non-Common Sense owners.
Multiplicative 1.23

Trade[edit]

Modifier Example Description Effect Type Version Added
province_trade_power_modifier province_trade_power_modifier = 0.1 Modifies the trade power efficiency in a province. Multiplicative 1.1
province_trade_power_value province_trade_power_value = 0.5 Adds to the trade power in a province. Additive 1.1
trade_goods_size_modifier trade_goods_size_modifier = 0.25 Modifies the goods produced efficiency in a province. Multiplicative 1.12
trade_goods_size trade_goods_size = 0.5 Adds to the trade good size in a province Additive 1.12
trade_value_modifier trade_value_modifier = 0.1 Modifies the base trade value in a province. Multiplicative 1.1
trade_value trade_value = 1 Adds to the base trade value in a province. Additive 1.1

Religion[edit]

Modifier Example Description Effect Type Version Added
local_missionary_strength local_missionary_strength = 0.01 Adds to the missionary strength in a province. 1 equals 100% strength. Additive 1.1
religious_conversion_resistance religious_conversion_resistance = 0.1 Adds to conversion resistance from Centres of Reformation. Additive 1.20

Culture[edit]

Modifier Example Description Effect Type Version Added
local_culture_conversion_cost local_culture_conversion_cost = -0.25 Modifies the culture conversion cost in a province. Multiplicative 1.22

Stability[edit]

Modifier Example Description Effect Type Version Added
local_unrest local_unrest = -1 Adds to the unrest value in a province. Additive 1.8
local_autonomy local_autonomy = 0.05 Adds to the autonomy rate in a province. Additive 1.8
local_years_of_nationalism local_years_of_nationalism = -5 Adds to the base nationalism value in a province. Additive 1.20
min_local_autonomy min_local_autonomy = 50 Sets the minimum autonomy value a province can have. Constant 1.16

Rule modifiers[edit]

Age[edit]

Only usable in Age bonuses.

Modifier Example Description Effect Type Version Added
attack_bonus_in_capital_terrain attack_bonus_in_capital_terrain = yes Grants attack bonus in provinces with the same terrain as capital province. Constant 1.20
can_bypass_forts can_bypass_forts = yes Allows units to ignore fort zones of control. Constant 1.20
can_chain_claim can_chain_claim = yes Allows claims to be enacted through already claimed provinces. Constant 1.20
can_colony_boost_development can_colony_boost_development = yes Grants bonus 1 tax, production and manpower on completed colonies. Constant 1.20
can_transfer_vassal_wargoal can_transfer_vassal_wargoal = yes Allows usage of the Transfer Subject peace term at half cost. Constant 1.20
force_march_free force_march_free = yes Allows usage of the force march action for free. Constant 1.20
free_maintenance_on_expl_conq free_maintenance_on_expl_conq = yes Removes maintenance cost for explorers and conquisadors. Constant 1.20
ignore_coring_distance ignore_coring_distance = yes Allows coring in any uncored province, regardless of distance. Constant 1.20

Ideas[edit]

Only usable in Ideas.

Modifier Example Description Effect Type Version Added
cb_on_government_enemies cb_on_government_enemies = yes Acts a visible script flag. Can be checked in triggers with cb_on_government_enemies = yes Constant 1.1
cb_on_religious_enemies cb_on_religious_enemies = yes Acts a visible script flag. Can be checked in triggers with cb_on_religious_enemies = yes Constant 1.1
cb_on_primitives cb_on_primitives = yes Allows claims to be fabricated on overseas provinces in Colonial regions. Constant 1.1
cb_on_overseas cb_on_overseas = yes Allows claims to be fabricated on overseas provinces in Trade Company regions. Constant 1.1
idea_claim_colonies idea_claim_colonies = yes Allows claims to be fabricated on overseas provinces in Colonial regions that are owned by by another nation that is also overseas. Constant 1.1
may_explore may_explore = yes Allows the recruitment of explorers and conquisadors. Constant 1.1
may_perform_slave_raid may_perform_slave_raid = yes Allows ships to perform slave raids. Constant 1.16
may_recruit_female_generals may_recruit_female_generals = yes Allows the recruitment of female generals. Constant 1.11
no_religion_penalty no_religion_penalty = yes Removes the penalties associated with negative religious tolerance. Constant 1.1
reduced_stab_impacts reduced_stab_impacts = yes Reduces the stability hits when taking diplomatic actions that cause them (i.e. Break Marriage). Constant 1.1
sea_repair sea_repair = yes Allows ships to repair in coastal sea zones adjacent to owned provinces. Constant 1.1
may_establish_frontier may_establish_frontier = yes Allows the usage of the Siberean Frontier mechanic. Constant 1.22
extra_manpower_at_religious_war extra_manpower_at_religious_war = yes Grants an increase in manpower recovery by a factor of 3 during religious wars. Constant 1.1
auto_explore_adjacent_to_colony auto_explore_adjacent_to_colony = yes Grants the abiliy to automatically discover undiscovered provinces adjacent to colonies. Constant 1.1

Banners[edit]

Modifier Example Description Effect Type Version Added
has_banners has_banners = 1 Allows the usage of Manchu banner units. Country scope. Constant 1.20
local_has_banners local_has_banners = 1 Allows Manchu banner units to be raised in owned provinces. Province scope. Constant 1.20

Unique modifiers[edit]

There are three modifiers that are used within event modifiers only:

religion = yes
secondary_religion = yes

When added to an event modifier, these will cause the event modifier to disappear if the country changes religion (or syncretic religion).


is_janissary_modifier = yes

When added to an event modifier, the event modifier will only affect janissary regiments. Without the Cradle of Civilization.png Cradle of Civilization this part is ignored and the event modifiers become a normal global modifier.

is_rajput_modifier = yes

When added to an event modifier, the event modifier will only affect rajput regiments. Without the Dharma.png Dharma this part is ignored and the event modifiers become a normal global modifier.

Removed modifiers[edit]

These modifiers have been removed from the game and no longer function.

Modifier Example Version Removed
overseas_income overseas_income = 0.1 1.4
local_tariffs local_tariffs = 0.1 1.4
colonist_time colonist_time = -0.1 1.4
leader_fire leader_fire = 1 1.6
leader_shock leader_shock = 1 1.6
minimum_revolt_risk minimum_revolt_risk = 1 1.8
local_revolt_risk local_revolt_risk = 1 1.8
global_revolt_risk global_revolt_risk = 1 1.8
colonial_liberty_desire colonial_liberty_desire = 0.05 1.10 (added in 1.8)
merchant_steering_to_inland merchant_steering_to_inland = 10 1.10 (added in 1.6)
may_force_march may_force_march = yes 1.10
merchant_present_inland merchant_present_inland = 5 1.10 (added in 1.6)
build_power_cost build_power_cost = -0.2 1.12 (added in 1.7)
global_trade_income_modifier global_trade_income_modifier = 0.1 1.13
reduced_native_attacks reduced_native_attacks = yes 1.14
local_spy_defence local_spy_defence = 0.5 1.16
may_study_technology may_study_technology = yes 1.16
may_sow_discontent may_sow_discontent = yes 1.16
may_sabotage_reputation may_sabotage_reputation = yes 1.16
may_infiltrate_administration may_infiltrate_administration = yes 1.16
may_agitate_for_liberty may_agitate_for_liberty = yes 1.16
accepted_culture_threshold accepted_culture_threshold = -0.1 1.18 (added in 1.7)
relations_decay_of_me relations_decay_of_me = 0.3 1.19
no_cost_for_reinforcing no_cost_for_reinforcing = yes 1.19
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