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 Should I Accept a Free Credit Lock? Learn the ins and outs of credit locks, freezes, and more. Retiring the 4% Rule A portfolio created with your long-term objectives in mind is crucial as you pursue your dream retirement. Who Is Your Trusted Contact? This investment account question is vital and answered as early as possible.