Maximum 401k Contribution 2024 Over 55 Years. The annual employee contribution limit for 401 (k) retirement plans is increasing from $22,500 to $23,000 in 2024. Workers who contribute to a 401 (k), 403 (b), most 457 plans and the federal government’s thrift savings plan can contribute up to $23,000.
For 2024, the contribution limit increases again to $23,000. 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.