2024 Max 401k Contribution Limits Over 50. Contribution limits for a roth 401(k) are the same as for a traditional 401(k). Contribution maximums will increase from $22,500 to $23,000 for 401 (k), 403 (b) and most 457 plans, as well as the federal government’s thrift savings plan, the irs.

The limit on employer and employee contributions is $69,000. For 2024, the contribution limit increases again to $23,000.