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 Exit Strategies of the Rich and Famous Estate conservation is too important to put off. Do you have a smart exit strategy? Retirement Plan Choices for Small Businesses Retirement choices can be intimidating. Picking the right strategy. Retirement Questions That Have Nothing to Do With Money Things to consider before retirement.