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 Prescription Drug Benefits Under Medicare (Part D) Do you need to enroll in Medicare Part D? Read this article to learn more about whether you need this coverage Do Our Biases Affect Our Financial Choices? Even the most seasoned investors have biases affecting their financial choices. Counteracting Capital Gains with Tax-Loss Harvesting You may have heard the phrase "tax-loss harvesting." A financial professional may be able to provide some guidance.