Force limit

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A force limit is a soft limit on how many ships or regiments a country can possess. It can be exceeded at a monetary price.

If a country goes past its force limit, the maintenance cost per unit will increase by twice as many percent as they are above the force limit, eventually making further expansion of the army or navy prohibitively expensive.

There are two independent force limits, one for naval units and one for land units, but both operate largely the same.

Computing force limit

Province modifiers

Provinces contribute to the force limit through their development level and through the following modifiers and buildings. Note that only coastal provinces may contribute to a country's naval force limit.

Condition Land force limit Naval force limit
Per development +0.1 +0.1
Trade good bonus: Grain
(only with Rights of Man.png Rights of Man)
+0.5 0
Trade good bonus: Naval supplies
(only with Rights of Man.png Rights of Man)
0 +0.5
Regimental Camp +1 0
Conscription Center +2 0
Shipyard 0 +2
Grand Shipyard 0 +4
Important center of trade 0 +2
Being in trade company 0 +0.5
Local autonomy (per 1%) -1% -1%*

Country modifiers

Condition Force limit modifier
Land Naval
Base for every nation +6 +12
Army Organizer advisor +10% 0
Subject nation -3 -6
March nation +30% +30%
Trading in bonus: Grain +20% 0
Trading in bonus: Naval supplies 0 +20%
Being the revolution target +40% +40%
Being an invading nation +100 +100
Fortified House unique native building +10 0
Per large colonial nation +5 +10
Per state of the Holy Roman Empire
(Emperor only)
+0.5 0
Per Officer's Mess (trade company investment) +5 0
Per Admiralty (trade company investment) 0 +5

More sources of force limit

Ideas and policies

Ideas and policies that increase force limits:

Land force limit

Land force limit modifier.png Traditions Ideas Bonuses Policies
  • Russian idea 4: Life-Long Conscription
  • Full Quantity
  • Scottish traditions
  • Sonoran idea 6: Uniting the Outlaws
  • Muscovite ambition
  • Ottoman ambition
  • Chickasaw traditions
  • Daimyo traditions
  • Nepali traditions
  • Satake traditions
  • Sindhi traditions
  • Goslar idea 5: Hunting Down the Robber Barons
  • Hessian idea 6: Hessian Mercenaries
  • Moldavian idea 3: Upper Boyars
  • Permian idea 7: Permian Army Reform
  • Ryazan idea 1: The Arsenal of Ryazan
  • Tripuran idea 4: Extended Military Control
  • Rûmi ambition
  • Sukhothai ambition
  • Welsh ambition
  • Arawak traditions
  • Imagawa traditions
  • Incan traditions
  • Mazovian traditions
  • Shoni traditions
  • Toki traditions
  • Tverian traditions
  • Westphalian traditions
  • Offensive idea 6: Grand Army
  • Albanian idea 1: All Lands Under Skanderbeg
  • Ando idea 3: Clan Unification
  • Ava idea 2: Rajadhiraja
  • Cornish idea 5: Cornish Royalist Army
  • Deccani idea 4: Empower the Paigah
  • Hosokawa idea 4: The Eastern Army
  • Mori idea 2: Leader of Kokujin Ikki
  • Thomondian idea 2: Subdue the Clans
  • Baluch ambition
  • Lan Xang ambition
  • Laotian ambition
  • Somali ambition
  • Roman idea 4: The Roman Legions
  • Rothenburg idea 4: The Knights of the Hinterland
  • Tyrone idea 4: Arming the People
  • Corsican idea 4: The Corsican League
  • Diplomatic-Quantity: The Pen Relies on The Sword Act
  • Economic-Quantity: Agricultural Cultivation
  • Quantity-Expansion: Colonial Garrisons

Naval force limit

Naval force limit modifier.png Traditions Ideas Bonuses Policies
  • Dutch traditions
  • Maritime idea 4: Grand Navy
  • Danish idea 6: Found the Copenhagen Dockyard
  • Knights Hospitaller idea 6: Scourge of the Corsairs
  • Gutnish idea 6: Gutnish Merchant Navy
  • Cypriot ambition
  • Maritime-Expansion: Naval Infrastructure
  • Moroccan traditions
  • Sulawesi traditions
  • Exploration idea 7: Global Empire
  • Alaskan idea 6: Alaskan Navy
  • Berber idea 1: Barbary Pirates
  • Candarid idea 6: Sinop Shipyard
  • Couronian idea 5: Couronian Colonization
  • Dalmatian idea 6: The Independent Arsenal
  • Estonian idea 2: Baltic Ties
  • Genoese idea 6: Setup the Office of Grand Admiral
  • Hadramhi idea 5: Sailors of the Indian Ocean
  • Hormuz idea 7: Hormuzi Naval Expansion
  • Ionian idea 5: Naval Expansion
  • Kono idea 1: Shugo of Iyo
  • Leonese idea 5: Expand the Leonese Navy
  • Orissan idea 7: Heritage of the Sadhabas
  • Pomeranian idea 7: German Navy
  • So idea 6: Port Maintenance
  • Spanish idea 3: Treasure Fleet
  • Sumatran idea 7: Rule of The Sea
  • Venetian idea 1: Venetian Arsenal
  • West Indies idea 7: Colonial Legacy
  • Breton ambition
  • Cham ambition
  • Hamburger ambition
  • Malagasy ambition
  • Tunisian ambition
  • Corsican traditions
  • Navarran traditions
  • Sardinian traditions
  • Mogadishan idea 6: Horn of Africa
  • Naxian idea 1: Maritime State
  • Ragusan idea 4: Ragusan Arsenal
  • Sligonian idea 6: Sligo's Naval Ambition
  • Al-Haasa ambition
  • Croatian traditions
  • Maritime-Defensive: The Fleet is our Wooden Wall
  • Aragonese idea 2: Protection of the Coastlines
  • Provençal idea 6: Toulon Dockyard


Land force limit

Type Modifier
Steppe nomads +10%/+20%/+30% depending on government level
Tribal Federation +10%
Dutch Republic +25% if the Orangists are in power
Revolutionary republic +20% if the Girondists are in power
Shogunate +0.5 land force limit per subject daimyo if Sword Hunt decision has been taken (only with Mandate of Heaven.png Mandate of Heaven)
Daimyo −2 if subject to the Shogun who has taken the Sword Hunt decision (only with Mandate of Heaven.png Mandate of Heaven)

Naval force limit

Type Modifier
Dutch Republic +10% if the Statists are in power
Pirate Republic +50%


  • Vassals and client states give Land forcelimit.png+1 + 10% of their land force limit to their master.
  • Marches give Land forcelimit.png+1 + 20% of their land force limit to their master.
  • Large (10 or more provinces) colonial nations give Land forcelimit.png+5 land force limit and Naval forcelimit.png+10 naval force limit to their master.
  • Junior partners in a personal union don't increase the land force limit of their masters.

Following ideas and policies increase land force limits increased by subjects.

For example, an increase of 100% would mean that all above mentioned bonuses would be doubled (2 + 40% instead of 1 + 20% land force limit from marches or 10 instead of 5 from colonial nations).

Vassal force limit contribution.png Traditions Ideas Bonuses Policies
  • Influence idea 7: Marcher Lords
  • Andalusian idea 2: Taifa Administration
  • Ashikaga idea 7: Reform the Shogun - Shugo System
  • Bosnian idea 5: Land of Princes
  • Herzegovinian idea 5: Land of Princes
  • Influence-Aristocratic: Autonomous Estates
  • Influence-Economic: Vassal Obligations Act
  • Plutocratic-Influence: Unified Army Command

Effect on maintenance

If a country has more land or naval units than the corresponding force limit, maintenance for those units will be multiplied by the ratio of units to the force limit, with the units over the force limit counting twice[1].

For example, having 12 regiments of infantry while at a force limit of 10 will increase maintenance for all regiments by 40%, independent of the type of unit.

As can be seen, going over the force limit will very quickly increase the maintenance costs and should only be done when absolutely necessary. Going over the land force limit will not increase the costs for naval units and vice versa.

Total maintenance cost

The total maintenance cost of an army or navy is:

Or, when above force limit:

In this case, when above the force limit:

  • A multiplier to force limit has the same effect as a reciprocal multiplier to maintenance.
  • The number of units that can be fielded for a fixed maintenance cost grows as the square root of the force limit.


  1. See in /Europa Universalis IV/common/defines.lua

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