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 Critical Estate Documents Sound estate management includes creating financial and healthcare documents. Here's an inside look. Retirement Questions That Have Nothing to Do With Money Things to consider before retirement. When Do You Need a Will? When do you need a will? The answer is easy: Right Now.