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 Question Thank you! Oops! Related Content Best-Performing Asset Classes Bonds may outperform stocks one year only to have stocks rebound the next. The Pre-Retirement Checklist This checklist can give you a quick snapshot of how prepared you are. Can Group, Private Disability Policies Work Together? Loss of income from disability has the potential to cause financial hardship. Disability insurance can help.