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 What If Your Kids Decide Against College? Rising college costs prompt students to seek alternatives; 529 account funds can be used for other education options. 7 Questions You May Have About Your Retirement Are you on the brink of retirement or settling into your golden years? Countdown to College Preparing for college means setting goals, staying focused, and tackling a few key milestones along the way.