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! Want to be Smarter With Your Money? Join our mailing list and get news and info to support your financial goals. First Name Last Name Email Address Thank you! Oops! Related Content Building Your Legacy A four-step framework for building a personal legacy. Estate Management 101 A will may be only one of the documents you need—and one factor to consider—when it comes to managing your estate. What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability.