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 Important Birthdays Over 50 Here's a look at several birthdays and “half-birthdays” that have implications regarding your retirement income. Bridging the Confidence Gap In the world of finance, the effects of the "confidence gap" can be especially apparent. Asset Allocation Consider how your assets are allocated and if that allocation is consistent with your time frame and risk tolerance.