2024 Maximum 401k Contribution Catch Up Contribution. The 401 (k) compensation limit is $345,000. Employees can invest more money into 401 (k) plans in 2024, with contribution limits increasing from 2023’s $22,500 to $23,000 for 2024.

Those 50 and older can contribute an additional. The limit for overall contributions—including the employer match—is 100%.