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 Strategies for Managing Student Loan Debt Five strategies for managing your student debt. Consider These 3 Things Before Driving Off the Lot Here are 3 quick tips to keep in mind when buying or leasing your next vehicle. Password Protection Strategies Simple steps may help you foil hackers and protect your privacy.