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 Making Your Tax Bracket Work Have you explored all your options when it comes to managing your taxable income? Lifetime of Earnings Estimate how much you have the potential to earn during your working years. Your Emergency Fund: How Much Is Enough? Having an emergency fund may help alleviate the stress and worry associated with a financial crisis.