Easily calculate the Texas home seller closing costs and seller "net" proceeds with this home-sale calculator. Find out if you qualify to exclude from your income all or part of any gain from the sale of your personal residence.Selling your Texas home without a realtor? Capital gains taxes in Texas are taxes that you pay on the profit from the sale of an investment asset. Our guide breaks down the process of selling a house in Texas into eight simple steps. When selling a house in Texas, you must: 1. Price your home competitively 2. Tax Code Section 23.01 requires appraisal districts to appraise taxable property at market value as of Jan. 1. Looking for a complete guide to sell your house in Texas? Here's a step-by-step process to help you through selling your house fast.