401k Mega Backdoor Roth Limit 2024 Limit. This amount is on top of the standard 401(k) contribution limit, which is $23,000 or $30,500 for individuals aged 50 and above. In 2024, the contribution limit for a roth ira is $7,000,.

 — for 2024, the pretax or roth 401 (k) deferral limit is $23,000, plus an extra $7,500 for savers aged 50 and older.  — with a 401 (k), the employee can add up to $23,000 (under age 50) and $30,500 (over age 50) into their 401 (k) account either on a traditional or roth basis for 2024.