Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. 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 Estimating the Cost of College This worksheet can help you estimate the costs of a four-year college program. What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does.