Interested in a Fuel Efficient Car? Estimate how many months it may take to recover the out-of-pocket costs when buying a more efficient vehicle. 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 Are Alternative Investments Right for You? With alternative investments, it’s critical to sort through the complexity. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Estate Strategies of the Rich and Famous The examples of famous celebrities underline the need for a clear estate strategy.