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 Perception vs. Reality There’s an alarming difference between perception and reality for current and future retirees. What to Do When You Lose Your Wallet Ever lost your wallet? Frustrating. Here’s what you can do to keep yourself safe. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit.