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 The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding. Creative Ways to Motivate Your Employees Five creative (and inexpensive) ideas for motivating your employees. 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.