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 Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. How Insurance Deductibles Work Knowing how insurance deductibles work can help you save money. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability.