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 The Wild West of Data Theft Learn about cyber liability insurance in this entertaining video. How Big is Money? Learn a little about worldwide currency in this fun infographic Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.