Contribution Limit 401k 2024 Married. Employees can contribute up to $23,000 to their 401 (k) plan for 2024 vs. For heads of household, the 2024 is $57,375, up from $54,750.

Contributions to 401 (k)s can be automatically deducted from your paycheck. The 401(k) contribution limit is $23,000.