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 Question Thank you! Oops! Related Content How to Appeal Your Property Taxes For homeowners who think their property taxes are too high, there are ways to appeal. Safeguard Your Digital Estate If you died, what would happen to your email archives, social profiles and online accounts? The Half Million Dollar Baby The true cost of raising a child may be far more than you expect.