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 Helpful Retirement Strategies for Women Learn how to address the challenges that women face when planning for retirement. Investing for Impact Learn how to build a socially conscious investment portfolio and invest in your beliefs. The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route.