401 Catch Up 2025. Employees can now defer up to $23,000 into 401 (k) plans for 2024, with an extra $7,500 for workers age 50 and older. If you are 50 or older, you can defer paying income tax on $30,000 in your 401 (k) plan.

Older workers can put more money than ever in their 401 (k)s starting next. Maximum contribution limits for 401(k) plans are rising by $500 for many workers in 2025.