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 Medicare Advantage Plans (Medicare Part C) Medicare Part C allows you to choose a Medicare Advantage plan. This article will help you decide if it's right for you. To Catch a Thief Having your identity stolen may result in financial loss plus the cost of trying to restore your good name. What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month.