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 Timing Your Retirement This short video illustrates the importance of understanding sequence of returns risk. Forecast This short video helps explain why markets can be as unpredictable as the weather. Making a Charitable Gift Did you know that there are benefits and limitations when you decide to donate stock? Learn more about your options.