Crusader Kings III Economy Guide: Building Gold, Levies, and Development

Money makes Crusader Kings III tick. Gold pays for your buildings, your soldiers, your bribes, and the endless string of weddings and feasts. Run out and the game turns on you quick: no new wars, troops that can't refill, counties rotting away with corruption. The economy looks complicated at first, but it really comes down to three things. What you build in the counties you hold personally, how developed those counties get, and how much of everyone else's income you can skim off the top. Get those three right and gold stops being the thing you worry about.

Domain Buildings and Holding Types

Your domain is the land you own outright, not the stuff your vassals run for you. Every holding in it pays tax straight into your pocket and hands you levies, so think of the domain as your paycheck. Size depends on rank. Your title adds to the limit: +2 as a count, +2 as a duke, +3 as a king, +4 as an emperor, on top of whatever the game rule sets as the base. Education traits and a few stewardship perks add more. Go over the limit and the extra holdings stop paying you anything after a year, which stings because you still have to defend them.

What each holding type is for

Castles are the fighter holding. A maxed Fortress gives +1.3 monthly tax and 625 levies, plus fort level and a big garrison. Castles are also the one type every government can hold directly, so they're safe to keep no matter who you're playing.

Cities are the money holding. A city climbs from +0.8 tax as a Village Center to +2.6 as a Bustling Metropolis, with a pretty small levy count (75 up to 225). The catch is that a normal feudal ruler can't hold a city themselves. You hand it to a mayor and they pay you tax on it instead.

Temples sit in the middle. +0.75 up to +2.0 monthly tax with decent levies. Whether you can hold one directly depends on your faith's clerical tradition. Lay Clergy lets you keep them. Theocratic sends the income to your clergy instead.

What holdings cost to build

| Action | Gold | Time | | --- | --- | --- | | Construct a new Castle, City or Temple | 400 | 5 years | | Upgrade a holding to level 2 | 550 | 5 years | | Upgrade a holding to level 3 | 700 | 5 years | | Upgrade a holding to level 4 | 850 | 5 years |

Every level takes five years before bonuses, so a holding is a long-term commitment, not a quick buy. Also worth knowing: if a county is missing its set of one castle, one city and one temple, the missing ones have to go up first before you can build anything extra.

Picking buildings by terrain

Terrain decides what you can build, so it decides which counties are worth taking in the first place.

• Farmlands: Manor Houses, the best raw tax building in the game. +0.7 at level 1 climbing to +3.85 at level 8. They take 5 years per level and mostly only go on Farmlands.
• Coast or major river: Tradeports. +0.35 tax and +5% development growth at level 1, up to +1.75 and +40% at level 8. Only 2 years per level, which is fast.
• Plains, Farmlands, Drylands: Farms & Fields. +0.5 up to +2.6 tax, plus development growth starting at level 4.
• Almost anywhere else: Cattle Pastures. Weaker tax (+0.35 to +1.75) but they work on most terrain and throw in levies and supply limit.

One thing that trips people up is that building levels are gated behind innovations. Level 2 needs Crop Rotation, levels 3 and 4 need Manorialism, 5 and 6 need Guilds, 7 and 8 need Cranes. A fresh county in 867 can't just buy its way to the top. You're capped by what your culture knows.

Spend where it compounds

County capitals get an extra building slot, and your own capital barony pays +1 tax on top of everything else. So the usual play is to stack your capital duchy with your best counties and build them tall, instead of dropping one cheap building in twelve different places. Ten gold a month concentrated where your Tax Offices and development bonuses apply beats two gold a month scattered across the map.

Development Growth and Its Bonuses

Development is a 0-100 score on each county. It's slow, it's unglamorous, and it quietly decides how rich you get.

What a point of development is worth

For feudal, clan and administrative rulers, each point gives +0.5% taxes and +0.5% levies in that county. Each point also adds +150 supply limit, which matters when you march big armies through your own land. On top of that, the average development of your culture's counties speeds up how fast that culture picks up new innovations, so development is partly a tech stat wearing an economy costume.

A county at 50 development pays 25% more than a county at 0. A county at 100 pays double. That's the whole pitch, and it's why development compounds so hard in good terrain.

How growth actually works

Each single point of development takes 100 growth to buy. The big lever is your steward's Increase Development in County task. Monthly growth from it is roughly (0.1 + 0.175 times the steward's stewardship skill), multiplied by a penalty for the development that already exists. The penalty caps at 87.5%, which is why old rich counties eventually stall out and frontier counties catch up fast.

Your steward's culture matters here, oddly enough. If their culture knows Public Works, Communal Government, Urbanization, or Renaissance Thought, that stall point moves later and later. A bright steward borrowed from an advanced culture gets more done in your backwater than a local would.

Development also spreads by itself. A county next to one that's 20 points ahead slowly drifts upward at 0.1 per point of difference per month. That's a real reason to conquer rich neighbors rather than poor ones, and a reason to stack your best counties next to each other.

Cheap ways to pump it

Buildings do a lot of quiet work here. Tradeports give +5% growth at level 1 and +40% at level 8. Farms & Fields add +5% from level 4 onward. A few duchy buildings add 10% to 30% across a whole duchy at once.

Perks and legacies stack too. The Centralization perk in the stewardship tree gives +0.3 monthly growth in your capital county. The third Erudition legacy gives +20% growth everywhere. Each era also has a civic innovation worth +10% growth, so it's worth picking those up early rather than letting the AI skip them.

Keep control up or lose the lot

Control is the other 0-100 county stat, and it's the one that collapses when you get besieged. Every point below 100 costs the county 1% tax and 0.5% levies. Drop under 35 control and the county starts collecting corruption modifiers, and those bite: Bandits Running Rampant is -20% holding taxes and -50% development growth, Incompetent Tax Collection is a flat -40% holding taxes, Thieves Guild is -10% taxes and a brutal -80% growth. A county can hold three of these at once.

So after a war, park your marshal on Increase Control in whatever got sacked. It's free money sitting on the table.

Taxes, Trade Routes, and Duchy Buildings

Quick honesty check first, because this trips up everyone coming from other Paradox games. CK3 has no EU4-style trade routes. There's no trade node network to push ducats around on. What the game actually gives you is trade-flavored buildings in the right spots: harbors on the coast, caravan stops in the desert. That's where trade lives.

Coastal trade is where the money is

Tradeports only go in holdings that are coastal or next to a major river, and they happen to be one of the best economy buildings anyway. A Small Harbor pays +0.35 tax with +5% development growth. A maxed Drydocks pays +1.75 with +40% growth. They also build quick, 2 years a level, versus 3 years for Farms & Fields and 5 for Manor Houses.

Out in the desert, the Desert Agriculture line carries the caravan economy. Caravanserais pay +0.85 tax with +2% growth, and the line climbs through Date Groves and Irrigation adding growth on the way up.

The practical takeaway: coastal duchies are worth more than inland ones, all else being equal. Flanders, Sicily, Thessalonika, Barcelona, that class of start. When you're choosing where to expand, a port on a major river usually beats a landlocked plains county, even though the plains county looks tempting on paper.

Duchy buildings, the short version

Every duchy gets one duchy building slot in its capital barony. You have to personally hold the duchy title to use it, and each duchy supports exactly one. Levels cost 600, 900, and 1200 gold, and every level takes 5 years.

| Duchy building | What it does | Best for | | --- | --- | --- | | Tax Offices | +15% / +20% / +30% holding taxes across the whole duchy | Almost everyone, it's the default money pick | | Royal Reserves | +0.8 to +1.4 tax, +10% to +30% development growth | Growth stacking in the right terrain | | Marches | Up to +30% holding taxes in hills and mountains | Hill and mountain duchies that otherwise earn nothing | | Military Academies | -10% to -30% recruitment cost, -2.5% to -5% army gold maintenance | Cutting upkeep instead of raising income | | Siege Works | -15% to -45% siege weapon maintenance and recruitment | Players who run big siege trains |

Tax Offices is the pick for most runs. It boosts every holding in the entire duchy, your counties and your vassals' alike, so it scales with everything else you do. Royal Reserves is the growth alternative but is locked to specific terrain (desert, mountains, oasis, steppe, wetlands).

Two warnings here. Duchy buildings need Manorialism before you can build one at all, then Windmills for level 2 and Cranes for level 3. And if you relocate the duchy capital later, the building gets deleted. That's up to 2700 gold and 15 years of construction gone in one click, so decide where your capital barony sits before you start building, not after.

Squeezing the vassals

Feudal vassal contracts default to 10% tax and 25% levies. You can push tax to 15% at High or 25% at Massive, but each step up costs opinion, and a given contract only changes once per lifetime unless you spend a hook. Levies run 25% / 35% / 50% on the same ladder.

Republic vassals are the low-effort option. They always pay 20% tax and 10% levies, no haggling at all, and their cities are rich. A handful of well-placed mayors can out-earn dukes who hate you.

And don't sleep on stewardship. Every point of your ruler's stewardship adds +2% domain taxes. Over a 40-year reign with a decent income, that single stat is worth more than most buildings you'll construct.

Balancing Levies Against Men-at-Arms

This is where most players' gold goes to die. Not in bad buildings, but in armies that cost more than the wars they win.

What each one actually costs

Levies are free to keep and cheap to run. A levy has 10 damage and 10 toughness, and raised levies cost 3 gold per 1,000 per month. That's the whole bill. A 10,000-strong levy mob costs 30 gold a month while it marches.

Men-at-Arms are permanent staff. They cost gold to recruit, gold every month whether you're at war or not, and the same again to refill after losses. And here's the part everybody misses: nearly all men-at-arms triple their upkeep the moment you raise them. Only Elephants and House Guards are exempt.

| Regiment | Recruit cost | Idle upkeep | Raised upkeep | | --- | --- | --- | --- | | Light Footmen | 45 | 0.45 | 1.35 | | Bowmen | 55 | 0.60 | 1.80 | | Pikemen | 75 | 0.90 | 2.70 | | Armored Footmen | 90 | 1.20 | 3.60 | | Light Horsemen | 85 | 1.05 | 3.15 | | Armored Horsemen | 200 | 2.10 | 6.30 |

Look at Armored Horsemen for a second. 200 gold to recruit, 2.1 a month at home, 6.3 a month the day they march. Two of those regiments, sized up a couple of times, will eat a small kingdom's entire income for as long as a war runs.

Why quality beats size

The combat math works out to roughly 3.3 levies needed to trade evenly with one unstated Armored Footman regiment on open plains. Levies die in bulk because they make up most of an army's strength pool, so incoming damage gets distributed onto them first. They're a shield for your professionals, not a weapon.

So the cheap effective army is a big pile of free levies screening a small set of good regiments. Bowmen and Pikemen early on, Armored Footmen once Quilted Armor is researched, maybe one cavalry regiment for the pursuit phase if the budget allows. Fill the rest of the bar with levies you were getting anyway.

Limits and sizes

You start with 2 regiment slots as a count. Duke brings 3, king 4, emperor 5. Each era's innovation adds one more slot and raises how far regiments can be sized up, +2 to +5 size levels depending on the era. Base regiment size is 100 men, though heavy cavalry runs 50, elephants 25, and siege weapons just 10.

Regiments reinforce at 10% of their maximum per month, and reinforcing costs the same as recruiting did. If you limp out of a war with three shredded regiments, that refill bill can dwarf everything you gained. When you're broke, toggle Monthly Reinforcement off in the military tab and let them sit damaged for a while.

Little cuts that add up

Station regiments in holdings with the right buildings and they pick up stat bonuses for free, which is the closest thing CK3 has to a discount on quality. Your martial skill shaves 1% off army gold maintenance per point. Military Academies takes another 2.5% to 5% off. Stack those and a mid-sized standing army stops being scary to look at in the budget.

Common Economic Mistakes That Bankrupt Realms

Going into debt

Debt in CK3 isn't a slap on the wrist. You can't declare war. Your men-at-arms stop reinforcing entirely. After three months in the red your counties become eligible for corruption, the same nasty modifiers you get from collapsed control.

It scales, too. Penalties start at -10% levy size and reinforcement rate, -10% development growth, and -5 vassal opinion, then climb with how many years of income you owe, all the way to -95% across the board at a century deep. Getting out early is annoying. Getting out late can eat a generation.

Holding more counties than your limit

Past your domain limit, the overflow stops paying tax and levies after a year. You still own it, you still defend it, you get nothing. Players grab land in a war, forget to check the number, and then wonder why income never moved.

Leaving armies raised

Raised men-at-arms cost triple. That's the entire mistake. Peace breaks out, the stack sits there burning 15 gold a month, nobody notices until the treasury goes negative. Disband when the war ends. The troops walk home and the bill stops dead.

Building thin instead of building tall

Twelve counties with one cheap building each earns close to nothing. Three stacked counties with the right terrain buildings and a Tax Offices behind them earns real money. Same gold spent, completely different outcome a few decades later.

Ignoring control after a war

Every siege you suffer knocks control down, and every lost point is 1% less tax until you fix it. Marshal on Increase Control in the hurt counties, then move along. It's probably the most underused free income in the game.

Moving a duchy capital after building in it

Relocating the duchy capital deletes the duchy building. Up to 2700 gold and 15 years, gone in one click. Pick the capital barony first, build second.

Staying tribal too long

Tribal has real strengths early, but a money engine isn't one of them. Tribal vassals pay base 0% tax, tribal rulers take a half-rate penalty to development growth, and armies run on prestige instead of gold. It works until it suddenly doesn't. Going feudal or clan hurts for a decade and is still usually the right call.

The one building to start with

Level 1 Tax Offices costs 600 gold and adds +15% to every holding tax in the duchy. On a capital duchy paying out 40 gold a month that's about 6 extra gold monthly, so the first level clears its own cost in roughly eight years and then keeps paying for the rest of the run. Hold off on the 900 and 1200 gold levels until the duchy underneath them is actually fat.