Maximum Backdoor Roth Contribution 2025. The mega backdoor roth allows you to save a maximum of $69,000 ($76,500 for those 50 and older) in your 401(k) in 2025. The roth ira contribution limit for 2025 is $7,000 for those under 50, and $8,000 for those 50 and older.

Iras have a $7,000 annual contribution limit for 2025. How a backdoor roth ira works (and its drawbacks) high earners can get around income limits on roth ira contributions by converting other.