Rationale behind Income from Production?

  • We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.

AKronblad

Primus Inter Pares
34 Badges
Jun 1, 2008
10.145
1.078
  • Crusader Kings II
  • Sengoku
  • Europa Universalis: Rome
  • Europa Universalis III Complete
  • Europa Universalis III Complete
  • Heir to the Throne
  • Divine Wind
  • Europa Universalis III
  • Deus Vult
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: The Republic
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings III: Royal Edition
  • Crusader Kings II: Way of Life
  • Crusader Kings II: Conclave
  • Tyranny: Archon Edition
  • Tyranny: Archon Edition
  • Tyranny: Gold Edition
  • Tyranny - Tales from the Tiers
  • Imperator: Rome Sign Up
  • Crusader Kings III
  • Rise of Prussia
  • Europa Universalis: Rome Collectors Edition
  • Europa Universalis IV: Pre-order
  • Europa Universalis III: Collection
  • 500k Club
  • Rome: Vae Victis
  • Victoria 2
  • Europa Universalis IV
  • Crusader Kings II: Charlemagne
Having played (or at least modded) EU4 for over four years, I suddenly just came to think about what the income from Production actually represents. To me, the main (or only) source of income for a state is more or less tax revenues, at least historically.

Does Tax simply represent one form of tax, and Production another form? Or what does Production income really reflect?
 

GRWalker

Second Lieutenant
52 Badges
Feb 8, 2014
129
63
  • Crusader Kings II: Charlemagne
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Third Rome
  • Europa Universalis IV: Pre-order
  • Crusader Kings II
  • Europa Universalis IV: Res Publica
  • Europa Universalis IV: Call to arms event
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Art of War
  • Europa Universalis IV
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: The Republic
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Legacy of Rome
  • Europa Universalis 4: Emperor
  • Stellaris: Apocalypse
  • Europa Universalis IV: Rule Britannia
  • Stellaris: Distant Stars
  • Europa Universalis IV: Dharma
  • Stellaris: Humanoids Species Pack
  • Shadowrun Returns
  • Shadowrun: Dragonfall
  • Stellaris: Megacorp
  • Europa Universalis IV: Golden Century
  • Hearts of Iron IV: No Step Back
  • Stellaris: Ancient Relics
  • Stellaris: Lithoids
  • Hearts of Iron IV: La Resistance
  • Stellaris: Federations
  • Battle for Bosporus
  • Hearts of Iron IV: Cadet
  • Europa Universalis IV: El Dorado
  • Crusader Kings II: Way of Life
  • Pillars of Eternity
  • Europa Universalis IV: Common Sense
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Cossacks
  • Crusader Kings II: Conclave
  • Stellaris
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV: Rights of Man
  • Hearts of Iron IV: Together for Victory
  • Europa Universalis IV: Mandate of Heaven
  • PDXCON 2017 Standard Ticket holder
  • Hearts of Iron IV: Death or Dishonor
  • Stellaris: Synthetic Dawn
I have always imagined it as an excise duty - - a tax paid to the state by the manufacturers in order to allow the goods to be made available to the consumers (or traders, in the case of EU4).
 

AKronblad

Primus Inter Pares
34 Badges
Jun 1, 2008
10.145
1.078
  • Crusader Kings II
  • Sengoku
  • Europa Universalis: Rome
  • Europa Universalis III Complete
  • Europa Universalis III Complete
  • Heir to the Throne
  • Divine Wind
  • Europa Universalis III
  • Deus Vult
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: The Republic
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings III: Royal Edition
  • Crusader Kings II: Way of Life
  • Crusader Kings II: Conclave
  • Tyranny: Archon Edition
  • Tyranny: Archon Edition
  • Tyranny: Gold Edition
  • Tyranny - Tales from the Tiers
  • Imperator: Rome Sign Up
  • Crusader Kings III
  • Rise of Prussia
  • Europa Universalis: Rome Collectors Edition
  • Europa Universalis IV: Pre-order
  • Europa Universalis III: Collection
  • 500k Club
  • Rome: Vae Victis
  • Victoria 2
  • Europa Universalis IV
  • Crusader Kings II: Charlemagne
I have always imagined it as an excise duty - - a tax paid to the state by the manufacturers in order to allow the goods to be made available to the consumers (or traders, in the case of EU4).

Interesting: makes sense. However, time period wise, excise duties are not that old, though, to occur already at start in the EU4 time period, right?
 

GRWalker

Second Lieutenant
52 Badges
Feb 8, 2014
129
63
  • Crusader Kings II: Charlemagne
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Third Rome
  • Europa Universalis IV: Pre-order
  • Crusader Kings II
  • Europa Universalis IV: Res Publica
  • Europa Universalis IV: Call to arms event
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Art of War
  • Europa Universalis IV
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: The Republic
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Legacy of Rome
  • Europa Universalis 4: Emperor
  • Stellaris: Apocalypse
  • Europa Universalis IV: Rule Britannia
  • Stellaris: Distant Stars
  • Europa Universalis IV: Dharma
  • Stellaris: Humanoids Species Pack
  • Shadowrun Returns
  • Shadowrun: Dragonfall
  • Stellaris: Megacorp
  • Europa Universalis IV: Golden Century
  • Hearts of Iron IV: No Step Back
  • Stellaris: Ancient Relics
  • Stellaris: Lithoids
  • Hearts of Iron IV: La Resistance
  • Stellaris: Federations
  • Battle for Bosporus
  • Hearts of Iron IV: Cadet
  • Europa Universalis IV: El Dorado
  • Crusader Kings II: Way of Life
  • Pillars of Eternity
  • Europa Universalis IV: Common Sense
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Cossacks
  • Crusader Kings II: Conclave
  • Stellaris
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV: Rights of Man
  • Hearts of Iron IV: Together for Victory
  • Europa Universalis IV: Mandate of Heaven
  • PDXCON 2017 Standard Ticket holder
  • Hearts of Iron IV: Death or Dishonor
  • Stellaris: Synthetic Dawn
Interesting: makes sense. However, time period wise, excise duties are not that old, though, to occur already at start in the EU4 time period, right?
I'm not sure; by name this kind of taxation goes back to the period of the English Civil War, so mid-17th century. I couldn't find older examples after a cursory search on Wikipedia.

Another train of thought: if some nation has +% income from production in their National Ideas, you could check the flavor text for clues on what that means.
 

Robert de Bruce

Major
60 Badges
Jun 3, 2011
604
45
  • Europa Universalis III: Chronicles
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Common Sense
  • Imperator: Rome
  • Imperator: Rome Sign Up
  • Age of Wonders III
  • Victoria 2
  • Tyranny - Bastards Wound
  • Tyranny - Tales from the Tiers
  • War of the Roses
  • 500k Club
  • Europa Universalis IV: El Dorado
  • Crusader Kings II: Way of Life
  • Pillars of Eternity
  • Age of Wonders II
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Cossacks
  • Crusader Kings II: Conclave
  • Crusader Kings II: Reapers Due
  • Europa Universalis IV: Rights of Man
  • Tyranny: Archon Edition
  • Crusader Kings II: Monks and Mystics
  • Europa Universalis IV: Mandate of Heaven
  • Crusader Kings II: Holy Fury
  • Europa Universalis IV: Dharma
  • Europa Universalis IV: Rule Britannia
  • Europa Universalis IV: Golden Century
  • Europa Universalis IV: Cradle of Civilization
  • Age of Wonders: Shadow Magic
  • Age of Wonders
  • Darkest Hour
  • Europa Universalis IV
  • Europa Universalis IV: Pre-order
  • Europa Universalis IV: Third Rome
  • Crusader Kings II: Jade Dragon
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Art of War
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: The Republic
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: Charlemagne
  • Europa Universalis IV: Call to arms event
  • For the Motherland
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
I thought of the production income generated by royal manufactories and such. In the time period EUIV covers it wasn't like private enterprises produced and paid taxes and the kings were confident with taxes only. There are many examples in France and a good one is the Saxonian porcelain manufacture. Furthermore, colonial and trade companies had their own plantations, contributing directly to state income. So for me it's also explainable that one province produces only one good, representing only the state production there. Ofcourse it does not fit for all, for example hordes, tribes and also some goods like grain. Grain you may explain with old feudal rules giving certain percentages of the harvest to the lordship. But usually at EUIV time frame this is a nominal rule, replaced by monetary taxation saying this amount of grain is worth this in ducats.
 

TheMeInTeam

Field Marshal
54 Badges
Dec 27, 2013
30.279
18.955
  • Age of Wonders III
  • Crusader Kings II: Conclave
  • Hearts of Iron IV: No Step Back
  • Stellaris
  • Hearts of Iron IV: Cadet
  • Crusader Kings II: Reapers Due
  • Europa Universalis IV: Rights of Man
  • Hearts of Iron IV: Together for Victory
  • Crusader Kings II: Monks and Mystics
  • Europa Universalis IV: Mandate of Heaven
  • Europa Universalis 4: Emperor
  • Hearts of Iron IV: Death or Dishonor
  • Stellaris: Synthetic Dawn
  • Europa Universalis IV: Cossacks
  • Europa Universalis IV: Cradle of Civilization
  • Battle for Bosporus
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV: Rule Britannia
  • Europa Universalis IV: Dharma
  • Crusader Kings II: Holy Fury
  • Europa Universalis IV: Golden Century
  • Hearts of Iron IV: Expansion Pass
  • Prison Architect
  • Hearts of Iron IV: La Resistance
  • Crusader Kings III
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Magicka 2
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: El Dorado
  • Victoria 2
  • Europa Universalis IV
  • Crusader Kings II: Charlemagne
  • Crusader Kings II
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Wealth of Nations
  • Hearts of Iron III
  • Magicka
  • Europa Universalis IV: Res Publica
  • Stellaris - Path to Destruction bundle
  • Victoria 2: A House Divided
  • Victoria 2: Heart of Darkness
Interesting: makes sense. However, time period wise, excise duties are not that old, though, to occur already at start in the EU4 time period, right?

Efficiency does increase very significantly from tech as time goes on. Early game production efficiency is pretty low (and thus production income) but you eventually get lots of modifiers to make it strong, only trade can outcompete it and you need a good amount of control for trade to significantly outperform production (they also have good synergy).
 

Alblaka

Foresightful Flag-Choser
101 Badges
Apr 12, 2013
4.016
1.665
  • Crusader Kings II
  • Stellaris - Path to Destruction bundle
  • Stellaris: Synthetic Dawn
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Pre-order
  • Europa Universalis IV: Third Rome
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
  • Sword of the Stars
  • Sengoku
  • Semper Fi
  • Victoria: Revolutions
  • Europa Universalis IV: Res Publica
  • Magicka
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • Europa Universalis IV: Call to arms event
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sons of Abraham
  • Cities in Motion 2
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • For the Motherland
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Wealth of Nations
  • Crusader Kings II: Monks and Mystics
  • Hearts of Iron IV: Together for Victory
  • Stellaris: Digital Anniversary Edition
  • Tyranny: Archon Edition
  • Europa Universalis IV: Rights of Man
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV: Colonel
  • Hearts of Iron IV: Cadet
  • Europa Universalis IV: Mandate of Heaven
  • Stellaris
  • Crusader Kings II: Conclave
  • Victoria 3 Sign Up
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Magicka 2
  • Crusader Kings II: Way of Life
  • Magicka: Wizard Wars Founder Wizard
  • Europa Universalis IV: El Dorado
  • Cities: Skylines
  • Victoria 2
I thought of the production income generated by royal manufactories and such. In the time period EUIV covers it wasn't like private enterprises produced and paid taxes and the kings were confident with taxes only. There are many examples in France and a good one is the Saxonian porcelain manufacture. Furthermore, colonial and trade companies had their own plantations, contributing directly to state income. So for me it's also explainable that one province produces only one good, representing only the state production there. Ofcourse it does not fit for all, for example hordes, tribes and also some goods like grain. Grain you may explain with old feudal rules giving certain percentages of the harvest to the lordship. But usually at EUIV time frame this is a nominal rule, replaced by monetary taxation saying this amount of grain is worth this in ducats.

Given that you literally build workshops and manufactories with royal/government coin, this seems like the most reasonable explanation.
Everything past that can be blamed on 'abstraction to suit the gameplay design'.
 

Wektor

Sergeant
49 Badges
Nov 10, 2013
82
39
  • Crusader Kings II
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Res Publica
  • Europa Universalis IV: Third Rome
  • Hearts of Iron IV: Cadet
  • Crusader Kings II: Conclave
  • Crusader Kings II: Reapers Due
  • Europa Universalis IV: Rights of Man
  • Stellaris: Leviathans Story Pack
  • Europa Universalis IV: Mandate of Heaven
  • Stellaris: Synthetic Dawn
  • Europa Universalis IV: Cradle of Civilization
  • Crusader Kings II: Jade Dragon
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Apocalypse
  • Europa Universalis IV: Rule Britannia
  • Stellaris: Distant Stars
  • Europa Universalis IV: Dharma
  • Crusader Kings II: Holy Fury
  • Europa Universalis IV: Golden Century
  • Imperator: Rome
  • Stellaris: Ancient Relics
  • Stellaris: Lithoids
  • Imperator: Rome - Magna Graecia
  • Europa Universalis 4: Emperor
  • Stellaris
  • Europa Universalis IV: Cossacks
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: El Dorado
  • Europa Universalis IV
  • Victoria 2
  • Europa Universalis IV: Call to arms event
  • Europa Universalis IV: Art of War
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Darkest Hour
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Charlemagne
  • Stellaris - Path to Destruction bundle
  • Europa Universalis IV: Mare Nostrum
  • Victoria 2: A House Divided
  • Victoria 2: Heart of Darkness
In addition to what others said, it also may represent the income from royal domain - in many countries monarchs owned considerable amount of land and in many cases national treasury and monarch's own money was basically the same thing. In Poland, for example, in that period main sources of money for the state were not really taxes (as nobility and clergy had many privileges and exemptions from taxation and collecting taxes was problematic) but mostly state monopoly for salt mines (hence in vanilla Eu4 Kraków province is very rich and has salt as a trade good), income from vast arable lands and cities owned by the king and custom taxes imposed on trade. Also, for example, in Russia, Peter the Great established state monopoly on alcohol production, so all the money from alcohol consumption in Russia went straight to the treasury (and btw, he also implemented laws encouraging alcohol consumption among peasants, which some claim led to alcoholism problems in Russia). so, basically, the state had quite big impact on economical life back then.
 

Badesumofu

Field Marshal
70 Badges
Dec 1, 2016
4.457
1.001
  • Crusader Kings II: Jade Dragon
  • Europa Universalis IV: Pre-order
  • Cities: Skylines - After Dark
  • Europa Universalis IV: Cossacks
  • Cities: Skylines - Snowfall
  • Stellaris: Digital Anniversary Edition
  • Stellaris: Lithoids
  • Crusader Kings II: Horse Lords
  • Crusader Kings II: Conclave
  • Europa Universalis IV: Mare Nostrum
  • Hearts of Iron IV: Cadet
  • Crusader Kings II: Reapers Due
  • Europa Universalis IV: Rights of Man
  • Tyranny: Archon Edition
  • Europa Universalis IV: Common Sense
  • Stellaris: Leviathans Story Pack
  • Cities: Skylines - Natural Disasters
  • Crusader Kings II: Monks and Mystics
  • Cities: Skylines - Mass Transit
  • Europa Universalis IV: Mandate of Heaven
  • Surviving Mars
  • Cities: Skylines - Green Cities
  • Stellaris: Humanoids Species Pack
  • Stellaris: Apocalypse
  • Europa Universalis IV: Rule Britannia
  • Cities: Skylines - Parklife
  • Stellaris: Federations
  • Crusader Kings III
  • Europa Universalis 4: Emperor
  • Stellaris: Necroids
  • Stellaris: Nemesis
  • Victoria 3 Sign Up
  • Stellaris: Ancient Relics
  • Europa Universalis IV
  • Pillars of Eternity
  • Stellaris: Distant Stars
  • Europa Universalis IV: Dharma
  • Stellaris: Megacorp
  • Crusader Kings II: Holy Fury
  • Imperator: Rome Deluxe Edition
  • Victoria 2
  • Imperator: Rome Sign Up
  • Warlock: Master of the Arcane
  • Cities: Skylines
  • Europa Universalis IV: El Dorado
  • Crusader Kings II: Way of Life
  • Stellaris - Path to Destruction bundle
  • Europa Universalis IV: Third Rome
  • Stellaris: Synthetic Dawn
  • Victoria 2: Heart of Darkness
The thought I've often had as well is that you play as the country as a whole, not just its government. You don't get a game over when the government falls to something like a Revolution, after all. More production of more goods makes the country as a whole more wealthy and so you end up with more ducats to spend on whatever.

So you can then view it in one of a few ways: you can view all the spending of ducats that you do in the game as the government spending that money. In that case you'd also expect that the government gets some of the profits of things like workshops and manufactories. Or you can take the view that when you spend ducats it represents some body within the country spending money. In that case it doesn't matter whether something like a workshop directly enriches the government. Either way it makes sense.

Someone is building things and someone is making money of those things and using that money to build more things.
 

SignedName

Field Marshal
48 Badges
May 29, 2013
2.636
3.057
  • Crusader Kings II: Charlemagne
  • Pillars of Eternity
  • Europa Universalis IV: Pre-order
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
  • Semper Fi
  • Victoria: Revolutions
  • Europa Universalis IV: Res Publica
  • Hearts of Iron III Collection
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • For the Motherland
  • Europa Universalis IV: Call to arms event
  • Europa Universalis IV: Conquest of Paradise
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Europa Universalis IV: Wealth of Nations
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Mandate of Heaven
  • Europa Universalis IV: Rights of Man
  • Europa Universalis IV: Third Rome
  • Europa Universalis IV: Cradle of Civilization
  • Europa Universalis IV: Rule Britannia
  • Europa Universalis IV: Dharma
  • Shadowrun Returns
  • Victoria 3 Sign Up
  • Shadowrun: Dragonfall
  • Shadowrun: Hong Kong
  • Europa Universalis IV: Golden Century
  • Europa Universalis 4: Emperor
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV Sign-up
  • Stellaris
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Cossacks
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Crusader Kings II: Way of Life
  • Mount & Blade: Warband
  • Europa Universalis IV: El Dorado
  • Victoria 2
  • Europa Universalis IV
Interesting: makes sense. However, time period wise, excise duties are not that old, though, to occur already at start in the EU4 time period, right?
Taxes in kind are an ancient concept, and widespread throughout history. For people who couldn't pay taxes with coin, the government usually took a portion of their crops or other goods produced as payment instead, which the government would either use itself or sell to earn income.
 

ringhloth

Field Marshal
129 Badges
Dec 7, 2011
3.520
2.487
  • Sengoku
  • Heir to the Throne
  • Impire
  • Cities: Skylines - Snowfall
  • The Kings Crusade
  • Magicka
  • Majesty 2
  • March of the Eagles
  • Europa Universalis IV: Cossacks
  • Europa Universalis IV: Res Publica
  • Victoria: Revolutions
  • Rome Gold
  • Semper Fi
  • Hearts of Iron III: Their Finest Hour
  • Ship Simulator Extremes
  • Sword of the Stars
  • Sword of the Stars II
  • Knights of Pen and Paper 2
  • Victoria 2: A House Divided
  • Victoria 2: Heart of Darkness
  • Rome: Vae Victis
  • Stellaris: Galaxy Edition
  • Cities: Skylines - After Dark
  • Stellaris
  • Europa Universalis IV: Pre-order
  • Europa Universalis IV: Mare Nostrum
  • Commander: Conquest of the Americas
  • Arsenal of Democracy
  • Cities in Motion
  • Cities in Motion 2
  • Crusader Kings II
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • Ancient Space
  • Darkest Hour
  • Europa Universalis III
  • Europa Universalis III Complete
  • Divine Wind
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Wealth of Nations
  • For The Glory
  • For the Motherland
  • Hearts of Iron III
IMO it doesn't often represent taxes and direct income from goods - that's more represented by trade. It represents, instead, the fact that these goods are easily available, and their easy availability increases the wealth of your nation, which you can tax in other ways. For instance, a province producing grain means that you don't have to pay to import grain abroad as much, and thus aren't losing money to importing grain.