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 Healthcare Costs in Retirement Without a solid approach, health care expenses may add up quickly and potentially alter your spending. Comparing Mortgage Terms Estimate the total cost in today's dollars of various mortgage alternatives. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit.