Every bank has a limit of coins as well as players (if we are talking about shared banks). Those limits are upgradable via bank upgrades. The interest can also increase with bank upgrades.
Upgrading a bank could require coins as well as permissions. It is configurable.
If you don't understand percentages from the example below, they will be explained in the next page.
bank-upgrades:#Indexes must be from 0 to max index#0 is the default account everyone starts withmaximum-index:40:name:'&aStarter Account'lore: - '' - '&a>&m--------&r &6Interest Tranches &a&m--------&a<' - ' &eFirst &610 &emillion coins yields &b2% &einterest.' - ' &eFrom &610 &eto &615 &emillion yields &b1% &einterest.' - '' - ' &7Max interest: &6250,000' - ' &8(With 15,000,000 balance)' - '&a>&m---------------------------------&a<' - '' - '&7Max balance: &650 Million Coins' - '' - '&7This is the default account.'maximum-balance:50000000#What you need to upgrade to this upgraderequirements:coins:0permission:'none'deny-message:'&cYou don''t have enough coins to buy this upgrade!'percentages:#You can add and edit more procents and the "first", "second" name of the percentage doesn't really matter#For the amount of coins a player has it will receive a percentage from the category he is in#Procents also stack#For the example below if player has 13 million coins he will receive 2% from 10 million + 1% from 3 million (13 million - 10 million)first:percent:2minimum-coins:1maximum-coins:10000000second:percent:1minimum-coins:10000001maximum-coins:150000001:name:'&6Gold Account'lore: - '' - '&6>&m--------&r &6Interest Tranches &6&m--------&6<' - ' &eFirst &610 &emillion coins yields &b2% &einterest.' - ' &eFrom &610 &eto &620 &emillion yields &b1% &einterest.' - '' - ' &7Max interest: &6300,000' - ' &8(With 20,000,000 balance)' - '&6>&m---------------------------------&6<' - '' - '&7Max balance: &6100 Million Coins' - '' - '&7Cost: &65,000,000 coins'maximum-balance:100000000#What you need to upgrade to this upgraderequirements:coins:5000000permission:'none'upgrade-message: - '&fYou just upgraded to &6Gold Account&f!' - '&fYour maximum bank balance is now &6100 Million Coins' - '&fYour maximum interest is now &6300,000 Coins'deny-message:'&cYou don''t have enough coins to buy this upgrade!'percentages:#You can add and edit more procents and the "first", "second" name of the percentage doesn't really matter#For the amount of coins a player has it will receive a percentage from the category he is in#Procents also stack#For the example below if player has 13 million coins he will receive 2% from 10 million + 1% from 3 million (13 million - 10 million)first:percent:2minimum-coins:1maximum-coins:10000000second:percent:1minimum-coins:10000001maximum-coins:20000000