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 Retiring Earlier Than Expected? What To Know Retiring earlier than expected can be disheartening. Learn steps that can help you smoothe the road ahead. Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment. 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.