Solo 401k Contribution Limits 2025 Over 55. However, your contribution cannot exceed 25% of your gross adjusted. Solo 401k contribution limits are very high.
Retirement savers are eligible to put $500 more in a 401(k) plan in 2025: For 2025, the 401 (k) contribution limit for employees is $23,000, or $30,500 if you are age 50 or older.