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 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. Insuring Your Second Home There are unique risks of owning a second home and obtaining the proper coverage may protect you from financial risk. The Pre-Retirement Checklist This checklist can give you a quick snapshot of how prepared you are.