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 Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. Charitable Giving: Smart from the Heart Do you have causes that you want to support with donations?