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 How Income Taxes Work A quick look at how federal income taxes work. Please Leave Home Without It Concerns over identity theft continue to grow, especially with data breaches at major companies and financial institutions. To Buy or Not to Buy The decision whether to buy or rent a home may have long-term implications.