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 Sequence of Returns A look at how variable rates of return impact investors over time. How Women Can Prepare For Retirement Are women prepared for a 20-year retirement? 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.