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 Question Thank you! Oops! Related Content What’s Your Investment IQ? You make decisions for your portfolio, but how much do you really know about the products you buy? Try this quiz Why do Renters Have to Save More? How much more would retirement cost if you owned your home rather than rented? It could actually be several times less. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit.