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 Budget Check Up: Tax Time Is the Right Time Tax preparation may be the perfect time to give the household budget a check-up. Tax Strategies for Retirement Account Withdrawals Retirement accounts come with plenty of benefits, such as tax deductions, and a generally high return on investment. Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement.