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 Choose Your Own Retirement Adventure Retirement is one of the greatest adventures you’ll have. Which retirement adventure will you choose? Putting a Price Tag On Your Health Being healthy not only makes you feel good, it may also help you financially. Should You Tap Retirement Savings to Fund College? There are three things to consider before dipping into retirement savings to pay for college.