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 Money Draining Food Myths These food myths will really put a drain on your wallet. The Half Million Dollar Baby The true cost of raising a child may be far more than you expect. Buying Auto Insurance For Teen Drivers Tips on insuring your teen driver.