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 Acres of Diamonds In life it often happens that the answers to our most pressing questions are right in our own backyards. Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important. The Five Basics of Financial Literacy How literate are you when it comes to your finances? Brush up with these five basics.