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 Five Most Overlooked Tax Deductions Five overlooked tax deductions to help manage your tax bill. Dreaming Up an Active Retirement When you retire, how will you treat your next chapter? Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.