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 The Three Keys to a Great Password Have fun and learn how to craft the perfect password with the help of this highly engaging infographic. What’s Your Investment IQ? You make decisions for your portfolio, but how much do you really know about the products you buy? Try this quiz Navigating Retirement Pitfalls Why are they made again and again? Making sense of these errors in judgement.