2024 Solo 401k Contribution Limits 2024. For 2024, you can contribute up to $69,000, or $76,500 if you're 50 or older. This is an increase of $500 from 2023.

The employee deferral limit increased by $500 and the total combined. Contribution limits for 401(k)s, 403(b)s, most 457 plans, thrift savings plans (tsps), and other qualified retirement plans rise were $23,000 for 2024, rising from $22,500 for 2023.