Debt

Debt is a game mechanic introduced in Bloons TD 6. It causes the player to have their income generation reduced by 50% until the debt is fully paid off globally for a single player. Debt is displayed in red text with a minus sign behind the dollar sign.
In Co-op, debt only applies to the player affected by it.
Sources
In Bloons TD 6
- IMF Loan ability
- Banana Financier with nearby Monkey Banks and above
- IMF Loan ability
- Star Captain Jericho's In It For the Money ability