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 Is a Variable Annuity Right for Me? Pundits go on and on about how “terrible” or “wonderful” annuities are, but they never talk about whether annuities are right. Protection Against Uninsured Drivers You’re hit by an uninsured driver. Now what? Are you protected against financial losses? Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions.