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 Finding the Balance The sandwich generation faces unique challenges. For many, meeting needs is a matter of finding a balance. Retirement and Quality of Life Asking the right questions about how you can save money for retirement without sacrificing your quality of life. Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions.