401k Limit 2024 Catch Up Date. Secure act 2.0 builds on the 2019 secure act and introduces several changes affecting the thrift savings plan (tsp). If you are 50 or older, you can defer paying income tax on $30,000 in your 401(k) plan.

That compares with the $500 boost seen in 2024 over 2023. In 2022, for people under 50 years old, this limit is.