Self-Employed Retirement Plans Estimate the maximum contribution amount for a Self-Employed 401(k), SIMPLE IRA, or SEP. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Catch-Up Contributions Workers 50+ may make contributions to their qualified retirement plans above the limits imposed on younger workers. Putting a Price Tag On Your Health Being healthy not only makes you feel good, it may also help you financially. Safeguard Your Digital Estate If you died, what would happen to your email archives, social profiles and online accounts?