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 Markets React When markets shift, experienced investors stick to their strategy. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits. Consider Keeping Your Life Insurance When You Retire Reasons to retain your coverage into your retirement years.