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 A Meal for All Generations When it comes to generational differences, knowing the facts can be difficult. 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. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable.