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 A Brief Guide To Condo Insurance Important items to consider when purchasing condo insurance. Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA. How Insurance Deductibles Work Knowing how insurance deductibles work can help you save money and give you peace of mind.