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 Question Thank you! Oops! Related Content Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? Please Leave Home Without It Concerns over identity theft continue to grow, especially with data breaches at major companies and financial institutions. RE: Retirement How does your ideal retirement differ from reality, and what can we do to better align the two?