401k 2024 Contribution Limit Irs After Tax. In 2024, the contribution limit for a roth 401 (k) is $23,000, plus an additional contribution of $7,500 if you are age 50 or older. The internal revenue service (irs) has announced that contribution limits for 401 (k)s, 403 (b)s, most 457 plans, thrift savings plans (tsps), and other qualified.

The $500 increase is smaller than in previous years, but it is still a positive step for savers! The contribution limits are adjusted for inflation every year by the irs.