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 Retirement Seen Through Your Eyes What's your vision of retirement? What To Do When Your Income Reaches 7 Figures Preserve your high net worth with these foundational tips. 9 Facts About Retirement Regardless of how you approach retirement, there are some things about it that might surprise you.