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 When Do You Need a Will? When do you need a will? The answer is easy: Right Now. A Living Trust Primer Living trusts are popular, but their appropriateness will depend upon your individual needs and objectives. Term vs. Permanent Life Insurance When considering life insurance, it's important to understand your options.