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The religion of a province in Europa Universalis III represents the predominant belief of a majority of its population. Neither minority religions like Judaism and Sikhism nor pre-Reformation opposition to Catholicism such as the Hussites are modeled by the game. Religion affects many things such as local or national tax revenue, local revolt risk and even national military morale.

Religion Groups

There are four religion groups in EU3:

Religions of the same group consider each other to be heretics while religions of different groups consider each other to be heathens.

• Christian
  • Catholic
  • Protestant (Lutheranism, triggered by event around 1500)
  • Reformed (Calvinism, triggered by event shortly after Protestant)
  • Orthodox
• Muslim
  • Sunni
  • Shiite
• Eastern
  • Buddhism
  • Hinduism
  • Confucianism
  • Shinto
• Pagan
  • Animism
  • Shamanism

In Nomine, Heir to the Throne and Divine Wind

Changes from earlier versions

From In Nomine on, religious tolerance is instead divided into three categories:

• State Religion (e.g Catholic)
• Heretics (Religions in the same group, e.g. Orthodox or Reformed).
• Heathens (Religions outside of the same group, e.g. Sunni or Shinto).

Tolerance is affected by one's current religion, certain National ideas and decisions, legitimacy (for monarchies), and some particular forms of government.

Religious Conversion

Province Conversion

Missionaries work slightly differently after In Nomine. Instead of the hit-or-miss method in NA, a missionary requires a yearly upkeep during the conversion process until the province is fully converted. The missionary upkeep is set via slider settings in the economic overview screen.

During the conversion process there is a 6% increase in provincial revolt risk.

Religious Zealots

Religious zealots, new after the IN expansion, may force-convert provinces if they are allowed to successfully siege them.

State Religion Conversion

Non-orthodox Christians can change denominations through decision once the Reformation begins. Other religions cannot directly change religion. However, one can surrender to religious rebels or be converted in a peace deal. This only allows conversion within one's current religious group (Christian, Muslim, Eastern or Pagan).

There are only a few ways to convert between religious groups:

• A one-province state that goes bankrupt will adopt the religion (and primary culture) of its province.
• An event with a very long MTTH (5000 months) offers pagan countries the chance to become Christian, provided that they neighbor a Christian country and have the "Western Influences" modifier (which applies when one has Westernized but not yet modernized one's military). There are parallel versions for Protestant, Catholic and Reformed neighbors, so having one neighbor of each religion will greatly increase the chance of being able to convert. These events are in file napoleonevents.txt (id = 6405, 6406, 6407).
• In , various events and decisions can turn a Japanese daimyo's provinces Catholic. If a daimyo's territory becomes majority Catholic, a special decision allows conversion. Note that this only applies to daimyo; once Japan is united, this is no longer possible.

Religion Specifics (Divine Wind 5.1)

Religion Specifics (Heir to the Throne 4.1b)

Religion Specifics (In Nominee)

EU3 and Napoleon's Ambition

Christian

Catholic

Each province has a base stability cost of 20 ducats.

• 2 extra colonists each year
• 2 extra diplomats each year
• 1 extra missionary each year

Base success rate of missionaries : 30%

Only Catholic countries can bribe Cardinals in order to become Papal Controller.

Protestant

• Main article: Protestant.

Each province has a base stability cost of 30 ducats.

• +10% production efficency
• +10% tax income
• 1 extra colonists each year
• 1 extra diplomats each year
• 0.5 extra missionary each year

Base success rate of missionaries : 30%

Reformed

Each province has a base stability cost of 30 ducats.

• +10% trade efficiency
• -10% tax income
• 2 extra colonists each year
• 1 extra diplomats each year
• 0.5 extra missionary each year

Base success rate of missionaries : 27%

Orthodox

Each province has a base stability cost of 15 ducats.

• 1 extra colonists each year
• 1 extra missionary each year

Base success rate of missionaries : 30%

Muslim

Sunni

Each province has a base stability cost of 20 ducats.

• 1 extra missionary each year

Base success rate of missionaries : 30%

Shiite

Each province has a base stability cost of 20 ducats.

• -20% tax income
• +50% land morale
• 1 extra missionary each year

Base success rate of missionaries : 27%

Eastern

Buddhism

Each province has a base stability cost of 20 ducats.

• -20% tax income
• 1 extra missionary each year

Base success rate of missionaries : 30%

Hinduism

Each province has a base stability cost of 25 ducats.

• +5% tax income

Base success rate of missionaries : 35%

Confucianism

Each province has a base stability cost of 20 ducats.

• -20% tax income

Base success rate of missionaries : 20%

Shinto

Each province has a base stability cost of 15 ducats.

• -20% tax income
• +50% land morale

Base success rate of missionaries : 20%

Pagan

Animism and Shamanism

Each province has a base stability cost of 10 ducats.

Base success rate of missionaries : 50%

May be annexed even if not reduced to a 1-province country