Capital gains taxes in Texas are taxes that you pay on the profit from the sale of an investment asset. Texas does not have a state income tax, which means that residents of the state do not pay capital gains taxes on investments.This means that any profits made from the sale of your primary residence will not be taxed as long as they are within the exemption limits. You may owe capital gains taxes if you sold stocks, real estate or other investments. For a FREE tax savings analysis on a commercial or investment property, or a stock or a business you own, please complete the form below. The situation I feel is quite simple: We've lived in our home for 20 months and are looking to sell in order to buy a new primary residence. While this is slightly lower than the rest of the state, it can still be a costly deduction. Capital gains and vacation homes. A capital gain occurs when you sell a capital asset for more than your adjusted basis in the property. Texas does not have a unique capital gain tax because this specific tax is filed through the IRS.