2024 401k Maximum Contribution. The 401 (k) contribution limit is the maximum amount an individual can contribute to their 401 (k) retirement account in a calendar year without facing tax. For the tax year 2024, the maximum amount that an employee can contribute to their 401(k) retirement plan is $23,000.

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. Workplace retirement plan contribution limits for 2024.