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 Question Thank you! Oops! Related Content Estate Management 101 A will may be only one of the documents you need—and one factor to consider—when it comes to managing your estate. Do Our Biases Affect Our Financial Choices? Even the most seasoned investors have biases affecting their financial choices. What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability.