How to increase Supply Limit in CK3

Strength in Numbers+50%

Characters of this culture

tradition_strength_in_numbers · game/common/culture/traditions/00_combat_traditions.txt

Marches+100%

Each de jure county of the duchy

Levels 1–3: +25% to +100% (3 levels give it)

march · game/common/buildings/00_duchy_capital_buildings.txt

The Prophetic Mosque+100%

County

holy-site-prophetic-mosque · game/common/buildings/00_special_buildings.txt

Water Management+100%

Province

Levels 1–8: +10% to +100% (8 levels give it)

waterworks · game/common/buildings/00_standard_economy_buildings.txt

Great Barracks+100%

Each de jure county of the duchy

celestial-great-barracks · game/common/buildings/tgp_great_project_buildings.txt

Watermills+80%

Province

Levels 1–8: +10% to +80% (8 levels give it)

watermills · game/common/buildings/00_standard_economy_buildings.txt

Windmills+80%

Province

Levels 1–8: +10% to +80% (8 levels give it)

windmills · game/common/buildings/00_standard_economy_buildings.txt

Subak Water-Temples+80%

County

Levels 1–4: +20% to +80% (4 levels give it)

water-temples · game/common/buildings/00_tribal_buildings.txt

Crown Smithies+75%

Each de jure county of the duchy · culture with Metalworkers

Levels 1–3: +25% to +75% (3 levels give it)

blacksmiths · game/common/buildings/00_duchy_capital_buildings.txt

Petra+25%

County

petra · game/common/buildings/00_special_buildings.txt

The Taghaza Salt Pan+20%

Holder

Levels 1–4: +5% to +20% (4 levels give it)

taghaza-mines · game/common/buildings/00_special_mines.txt

Ijil Salt Mines+20%

Holder

Levels 1–4: +5% to +20% (4 levels give it)

ijil-mines · game/common/buildings/00_special_mines.txt

Torda Salt Mines+20%

Holder

Levels 1–4: +5% to +20% (4 levels give it)

turda-mines · game/common/buildings/00_special_mines.txt

Ziliujing & Gongjing Salt Wells+20%

Holder

Levels 1–4: +5% to +20% (4 levels give it)

zigong-mines · game/common/buildings/00_special_mines.txt

Manor Houses+15%

Province

Levels 2–8: +15% to +15% (7 levels give it)

farm-estates · game/common/buildings/00_standard_economy_buildings.txt

Walls of York+15%

County

york-walls · game/common/buildings/ccp3_special_buildings.txt

Orchards+10%

Province

Levels 3–8: +10% to +10% (6 levels give it)

orchards · game/common/buildings/00_standard_economy_buildings.txt

Orchards+10%

Province · culture with Polders, coastal

Levels 3–8: +10% to +10% (6 levels give it)

orchards · game/common/buildings/00_standard_economy_buildings.txt

Paddy Fields+5%

County

Levels 5–8: +5% to +5% (4 levels give it)

paddy-fields · game/common/buildings/00_standard_economy_buildings.txt

Farms & Fields+5%

County

Levels 5–8: +5% to +5% (4 levels give it)

cereal-fields · game/common/buildings/00_standard_economy_buildings.txt

Wetland Farms+5%

County

Levels 4–8: +5% to +5% (5 levels give it)

peat-quarries · game/common/buildings/00_standard_economy_buildings.txt

Watchtowers+5%

County

Levels 6–8: +5% to +5% (3 levels give it)

watchtowers · game/common/buildings/00_standard_fortification_buildings.txt

Hill Farms+2%

County

Levels 5–8: +2% to +2% (4 levels give it)

hill-farms · game/common/buildings/00_standard_economy_buildings.txt

Walls & Towers+2%

County

Levels 6–8: +2% to +2% (3 levels give it)

curtain-walls · game/common/buildings/00_standard_fortification_buildings.txt