2024 401k Contribution Limit Catch Up Limit. In 2024, the contribution limit for 401k plans, including 403 (b) plans, and most 457 plans, will increase to $23,000. The contribution limit on individual retirement accounts will increase by $500 in 2024, from $6,500 to $7,000.

The 401 (k) contribution boost for 2024. The limit for overall contributions—including the employer match—is 100%.