Development is a province attribute, which replaces the former system of static base tax and manpower. There are three kinds of development in a province - base tax, production, and manpower, corresponding to administrative, diplomatic and military power respectively. Players with the Common Sense DLC can increase province development values by using monarch power.
A province gains per development level in:
Irrespective of category, every point of development has the following effects on the individual province note only coastal provinces will experience sailor and naval force limit bonuses :
- +3% per point above 10 total development, goes up by 3 every 10 total development.
- +1% 省份战争分数花费
- +1% Province overextension value
- +10 Core creation cost
- +8 外加合并花费
- Increases the percentage of the local province culture in the player's nation.
- If the province belongs to an estate, the estate's loyalty will increase as if it had been granted a 1 development province.
- Increases the institution presence in the province by (new development level/6). This is capped at +10% increase.
- Most institution spread modifiers scale linearly with province development.
Development levels over 30 no longer contribute to higher coring and culture conversion costs. For each 10 levels of development, a province gets an additional building slot.
In addition, the nation gains +1 caravan power for each 3 total development levels, up to 50.
Developing a province
Monarch points (, or ) can be used to increase base tax, production, and manpower values, respectively. A province's base tax, production or manpower cannot be increased if its value is already more than that of the other two combined (for example, if base tax is 3 and production/manpower 1 each, only an improvement of production or manpower is possible). In other words the cap for one development type is equal to the other 2 plus 1.
The base cost for developing a province is 50 monarch points. Development efficiency from administrative technology affects the base cost by additional −10% at level 17, 23 and 27.
Development cost modifiers
The development cost modifiers influence how much it costs to develop a province. The cost to develop provinces increases by +3% per point above 10 total development. This modifier itself increases by 3 for every 10 total development. For example, a province upgrading from total development level 30 to 31 will have "Development: +99%" modifier.
All development cost modifiers are applied in an additive fashion.
Note that without ‘Common Sense’ DLC the modifiers are exchanged. (National) Development cost modifiers are replaced by a (national) goods produced modifier of the same amount with versed sign. Local development cost modifiers are replaced by tax income of a tenth with versed sign.
Stacking development cost modifiers
For developing a province to get an institution, it is recommended that the player choose to develop a province with multiple modifiers that stack. To be specific, to attain the maximal reduction in development cost, the player should choose to locate their capital in a province with a Centre of Trade, temperate climate, farmlands, and that produces cloth or cotton. The following provinces have this combination of modifiers: Antwerp, Baghdad, Constantinople, London, and Prague.
|Climate||Development cost modifier|
Ideas and traditions
Note: The minimum cost is capped at 4 power per development.
|-5%||in the capital province per 100 country development (up to -50%)|
|-20%||if a University is built in the province|
|-10%||for being Imperial Free City|
|-10%||parliamentary issue "Land reform" is active|
|-10%||if Burghers are at 60 influence and 60 loyalty (lower at less influence}}|
|-10%||as with cult.|
|-10%||with Encourage Development edict|
|-5%||if the province is an "Important Center of Trade" or "Important Natural Harbor"|
|-5%||if "Trading in Tropical Wood" is active|
|-10%||in province producing cloth or cotton with Rights of Man|
|-5%||for "Call for Reichsreform" in the Holy Roman Empire|
|-10%||for activating the decree "Expand Palace Bureaucracy", available to the Emperor of China|
|-5%||for "Organized through bishops" Protestant Aspect|
|-5%||for adopting the Renaissance institution|
|-1%||per 500 natives left alive in a colonized province|
|+0.1%||per point of devastation|
|+50%||for being a primitive nation|
|+50%||for being a vassal, client state or march|
AI generally will not develop provinces to more than original development * 2 or 10 development, whichever is biggest. These numbers can be changed in defines.
The exception to this rule emerges when the AI develops one province for the purposes of institution spread, introduced in Patch 1.18. At this time the exact behaviour of the AI regarding this is not well understood. The AI does not develop provinces anywhere as efficiently as a human player may do so.
- patch notes 1.15