We conform to the IRS rules and allow you to exclude, up to a certain amount, the gain you make on the sale of your home. If you profit from the sale of a home in California, then you may owe some capital gains tax unless you qualify for an exclusion.If you sold any assets, you'll also need to fill out Form 8949, which provides detailed information about each transaction. Discover everything you need to know about capital gains tax on real estate sales. Minimize tax liabilities and maximize profits. The amount of capital gains tax on a home sale depends on your income level, filing status, and the length of ownership. The California capital gains tax is levied at the same rate as regular income. This page walks Californians through what they need to know. When you sell your home, you must report the sale to the IRS using Form 1099S, which details the sale price and other pertinent information. Learn how to calculate capital gains on the sale of property in California.