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 Navigating Retirement Pitfalls Why are they made again and again? Making sense of these errors in judgement. 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. Questions to Consider When Buying a Vacation Home Doing your research is key before buying a vacation home.