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 Should You Invest in Exchange Traded Funds? There are thousands of ETFs available. Should you invest in them? The Financial Literacy Crisis Many Americans are operating their personal finances with only the barest minimum of knowledge. The Real Cost of a Vacation Home What if instead of buying that vacation home, you invested the money?