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 Question Thank you! Oops! Related Content What Can You Buy With 529 Distributions? This article can be a helpful guide when begin preparing for education expenses. Good Health is Good Business Good employee health can be great for the company’s bottom line. Who Is Your Trusted Contact? This investment account question is vital and answered as early as possible.