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 Raising Healthy Children Healthy habits are one of the greatest gifts to give your child. Impact Investing or Philanthropy This fun piece can help your clients explore the benefits of impact investing versus founding a philanthropy. Comparing Mortgage Terms Estimate the total cost in today's dollars of various mortgage alternatives.