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 Lifetime of Earnings Estimate how much you have the potential to earn during your working years. Tuning Your Social Security Benefit When should you take your Social Security benefit? 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.