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 Understanding FDIC Insurance FDIC insurance was designed to protect your deposited funds, but do you know how? This article answers that question. Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits.