Capital gains taxes stand to take a big chunk out of your profits when you sell an asset. However, like most taxes, there are many things that go into the exact calculations of the capital gains tax you will pay. Remember that capital gains tax applies to a variety of different assets, including stocks, property and businesses. A unique factor of capital gains tax is that the amount of tax depends heavily on how long you had the asset. Depending on the state you live in, the state government may also levy capital gains taxes in addition to the federal government.