Please help with verifying or updating older sections of this article. At least some were last verified for version 1.25.
Stability is a measure of the nation's internal peace. Unstable nations are more likely to face revolts and turmoil, while stable nations enjoy increased prosperity.
Like many other game mechanics, a player spends monarch power to increase stability, in this case administrative power (). Since these are also the points that go towards increasing the number of ideas and development, it is less likely that a country will always be at peak stability since a player may plan on investing monarch power in other things.
Please help with verifying or updating this section. It was last verified for version 1.25.
The base price for increasing stability is 100 administrative power, but overextension and lack of religious unity can increase this cost significantly. Some ideas and advisors decrease this. There are also events and other random factors also modifying the price temporarily. Stability cannot go higher than 3; any events that increase stability at this maximum will not increase stability further.
Main modifiers that affect the cost of raising stability are:
holding Bali (631) while religion is in Dharmic group and has the same religion as its owner with the great project Pura Besakih−5%; −10%; −15%.
holding Samarkand (454) while religion is in Muslim group and has the same religion as its owner with the great project Registan Square−10%; −15%; −25%.
holding Kostendil (4703) while state and province religion are both Orthodox with the great project Rila Monasteries−10%; −20%; −30%.
holding Hampshire (234) while state and province religion are both in Pagan group or province is of English culture, which is accepted by its owner, with the great project Stonehenge−10%; −25%.
holding Petén (842) while culture is in Mayan group, which is accepted by its owner, with the great project Tikal−10%; −20%; −30%.
holding Neva (33) with the great project Winter Palace−10%; −20%; −30%.
Stability is a measure of the nation's internal peace. Unstable nations are more likely to face revolts and turmoil, while stable nations enjoy increased prosperity.
). Since these are also the points that go towards increasing the number of ideas and development, it is less likely that a country will always be at peak stability since a player may plan on investing monarch power in other things.
+1 Absolutism.
(Overextension / 2)%. Half of overextension is added to the cost.
republican tradition)%
Artist advisor: −10%
Clergy: −2.5% to −10%
Orthodox religion: −10%
Curia controller: −10%
At 100 Mandate: −10%
Fraticelli religion: −5% (only exists in saves imported from CK2)
Cathar religion: −5% (only exists in saves imported from CK2)
Paulician religion: −20% (only exists in saves imported from CK2)
From great projects:
Heddal Stave Church 
Pura Besakih 
Registan Square 
Rila Monasteries
Stonehenge 
Tikal 
Winter Palace 
