401k Catch Up 2024 Limits. For those with a 401(k), 403(b), or 457 plan through an employer, your new maximum contribution limit. Yes, you can contribute to both a 403 (b) and a 401 (k) simultaneously.

For 2024, the maximum you can contribute to a simple 401 (k) is $16,000. For 2024, the limit for 401(k) plan contributions is $23,000, up from $22,500 last year, according to the irs.