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 Retirement Realities Many pre-retirees can become focused on the “ideal” retirement, but turning that dream into a reality can be tricky. The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective. Preparing for the Expected You can plan ahead to protect yourself and your family against the financial consequences of deteriorating health.