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 Medicare At 65+ 65 or older? It may be time to enroll in Medicare. Read to learn if you’re eligible. Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind. Why do Renters Have to Save More? How much more would retirement cost if you owned your home rather than rented? It could actually be several times less.