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 Please Leave Home Without It Concerns over identity theft continue to grow, especially with data breaches at major companies and financial institutions. Volunteering in Retirement For many, retirement includes contributing their time and talents to an organization in need. Women and Wealth: A Pivot Towards Retirement Tips and strategies for women approaching retirement to ensure a smooth transition.