Monkey Bank

 is the 3rd upgrade on Path 2 for Banana Farm in Bloons TD 5 and Bloons TD 6. When a Banana Farm gets upgraded to Monkey Bank, the farm becomes a bank controlled by monkeys. The Monkey Bank no longer drops bananas but instead generates money throughout the round, which is placed in its very own "bank account", separate from that of other Monkey Banks.

Bloons TD 5
It costs $3,570 on Easy, $4,200 on Medium, $4,535 on Hard and $5,040 on Impoppable. It generates $450 per round which can be upgraded to $490 and $630 with the More Bananas and Banana Plantation upgrades, respectively. You may withdraw this fund at any time and the bank will hold up to $5,000. In Bloons Monkey City, the capacities and generation is increased by 50%. At the end of each round, the currently stored balance earns TBA% interest.

Be aware that selling a Monkey Bank will not withdraw its cash, so before selling any Monkey Bank, it is advised to always withdraw the cash from such Monkey Banks before selling them.

Bloons TD 6
It costs $2,700 on Easy, $3,200 on Medium, $3,455 on Hard and $3,840 on Impoppable. It generates $240 per round which can be upgraded to $280 and $320 with the Increased Production and Greater Production upgrades, respectively. It can store up to $10,000, and can be increased to $12,500 with Bigger Banks. A Monkey Bank with the Banana Salvage uprade will autocollect its balance when full after one round. At the end of each round, the currently stored balance earns 15% interest.

Unlike BTD5, selling a Monkey Bank will automatically withdraw the balance stored in the bank.

BTD5
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Income earning per round
Note: The table assumes that the Monkey Bank has been initially upgraded before the round starts and that the income is given as when after the round.

Overall efficiency
TBA

Update History (Bloons TD Battles Mobile)
TBA

Update History (BTD6)
Cost of Monkey Bank increased ($2800 --> $3200)
 * 2.0

Trivia

 * It can be quite useful if players have Dartling Guns, because of having to hover the mouse over the Monkey Bank less often than if you decide to buy a Banana Republic.
 * In BTD5, when upgraded to a Banana Investments Advisory, it gains money over twice as fast and can hold four times the cash, increasing the effectiveness.