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 Who Is Your Trusted Contact? This investment account question is vital and answered as early as possible. A Look at Whole Life Insurance Whole life insurance remains in force as long as you remain current with premiums. Here's how it works. What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month.