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 Estimate Your RMD Help determine the required minimum distribution from an IRA or other qualified retirement plan. A Home Insurance Claim: To File Or Not To File Learn when it may not make sense to file a claim on your home insurance. Retirement Accounts When You Change Your Job This video discusses issues related to your retirement accounts when you move on from your job.