Taxation is one of the three primary sources of monthly income with production and trade. Each province has a base tax (and eventually an additional tax income) and a tax income efficiency. The yearly province tax amount is simply (base tax + local tax) * (tax efficiency) further modify by local autonomy. Taxation is increased by national tax income besides tax income from provinces so that:
Monthly tax income from provinces is:
The tax income efficiency includes local modifiers such as buildings and wrong-culture penalties and also national tax modifiers like treasurer advisor. The Local Autonomy is applied multiplicatively, so if a province has 100% Local Autonomy, the province tax amount will be of 0%.
Base tax and local tax income
The local tax income is a flat amount added to the base tax. Currently, the Longhouse native building (+1 tax income) is the only source of local tax income.
Tax income efficiency is how efficient the government is at squeezing taxes out of a province. The percentages are additive, so for example, if a province in an Oligarchic republic (+5%) is a core city (+25% and +75%) but it is blockaded (-75%), the total tax efficiency will be 30%.
These are modifiers that affect provinces on a case-by-case basis.
|+60%||Cathedral building, replace Temple.|
|+33%||Held by 60-100 Loyal Dhimmi Estate|
|+2%||Colony level (for 100 ab., max of 20% which becomes 25% as a city)|
|-10%||Religious intolerance (for each negative point)|
|-15%||Non-accepted culture in cultural group|
|-23%||Non-accepted culture for non-tribal Republic|
|-25%||Looted (at 100%)|
|0%||Local autonomy (at 100%) in:|
|-100%||Local autonomy (at 100%)|
These are modifiers that affect all of the owner's provinces equally.
|-5%||Traders faction for Merchant republic|
Ideas and policies:
Various events, decisions and mission rewards may influence either local or national tax efficiency.
National Tax income
National Tax income is a special tax income that is not tied to individual provinces, it is added last at your tax income after tax efficiency is applied, so it isn't affected even by national modifiers.
Unlike every other income it is usually expressed as a yearly value in events, so if an event grants a National Tax income to know the actual monthly income the given value must be divided by twelve.
||HRE emperor after Enact Gemeiner Pfennig reform|
||Bonus per Free city for the HRE emperor|
Several events, such as a successful hunt for the seven cities, can grant a National Tax income.