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 Money Draining Food Myths These food myths will really put a drain on your wallet. The Other Sure Thing Though we don't like to think about it, all of us will make an exit sometime. Are you prepared? Split Annuity Strategy Here's one strategy that combines two different annuities to generate income and rebuild principal.