Maximum 401k Contribution With Catch Up 2024. For 2024, the maximum you can contribute to a simple 401(k) is $16,000. The limit on combined employee and employer contributions is $69,000, up from $66,000 in 2023.
Those 50 and older can contribute an additional $7,500. For 2024, the maximum you can contribute to a simple 401(k) is $16,000.