Individual 401k 2024 Limits. 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 in 2024, a $500 increase from the $22,500 limit in 2023. The 401 (k) contribution limit for 2024 is $23,000 for employee contributions, and $69,000 for the combined employee and employer contributions.
For 2023, the solo 401 (k) contribution limits are $66,000 or $73,500 if you are at least age 50. The basic employee contribution limit for 2024 is $23,000 ($22,500 for 2023).