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 The Economic Journey of Your Morning Coffee Few contemplate the complex journey that brought their coffee from farm to kitchen table. The Wild West of Data Theft Learn about cyber liability insurance in this entertaining video. Should You Tap Retirement Savings to Fund College? There are three things to consider before dipping into retirement savings to pay for college.