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 It May Be Time for a Financial Checkup It’s never a bad time to speak with your financial professional about changes in your situation. To Catch a Thief Having your identity stolen may result in financial loss plus the cost of trying to restore your good name. Buying Auto Insurance For Teen Drivers Tips on insuring your teen driver.