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 Saving for College 101 Here’s a crash course on saving for college. RE: Retirement How does your ideal retirement differ from reality, and what can we do to better align the two? Questions to Consider When Buying a Vacation Home Doing your research is key before buying a vacation home.