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 Cost of Medical Care Learn about the risks of not having health insurance in this informative article. How Much Home Can I Afford? With a few simple inputs you can estimate how much of a mortgage you may be able to obtain. Who Is Your Trusted Contact? This investment account question is vital and answered as early as possible.