2024 401k Contribution Max. In 2024, the contribution limit for a roth ira.  — in 2024, the contribution limit for a roth 401 (k) is $23,000, plus an additional contribution of $7,500 if you are age 50 or older.

 — the total overall 401 (k) contribution limit for 2024, which includes employer matching contributions and nonelective contributions, is $69,000.  — simple 401 (k) plan contributions max out at $16,000 for the 2024 tax year.