How Does a Principal Residence Affect Federal and State Taxes?

 Posted on January 30, 2026 in Taxation Law

When addressing issues related to tax law, the place where a person lives can be an important detail. The location of a taxpayer’s principal residence may have an impact on both federal and state tax obligations. This issue may affect the capital gains taxes that apply to the sale of a home, state income tax liability, and property tax exemptions. Because these rules can be complex, and the financial consequences can be substantial, a taxpayer who faces questions about the determination of their primary residence may want to work with an experienced attorney to resolve any concerns they may face.

What Is a Principal Residence?

A principal residence is the home where a person lives most of the time. It is sometimes referred to as a primary residence. A person may own several homes, but only one property will be considered their principal residence for tax purposes. Determining which home qualifies as the principal residence is important, because it may affect multiple types of tax-related issues.

Both the IRS and California tax authorities may consider several factors when determining where a person’s principal residence is located. No single factor is always decisive. Instead, the overall circumstances are considered. Common factors include:

• Where the person lives the majority of their time
• The address used on a person’s tax returns
• Where a person has registered to vote
• The address listed on a person’s driver’s license and vehicle registration
• Where a family’s children attend school
• The mailing address used for financial accounts
• The distance between a home and a person’s place of employment
• Utility usage and occupancy patterns at a home

When a person owns multiple properties, tax authorities may examine these details to determine which residence is truly the primary one.

Federal Capital Gains Tax Exclusion for the Sale of a Principal Residence

One of the most important tax benefits associated with a principal residence is the federal capital gains tax exclusion that will apply when selling a home. Qualifying homeowners may exclude a substantial portion of the profit from the sale of their primary residence from federal capital gains taxes. If certain requirements are met, a homeowner may exclude up to $250,000 of capital gains if they are filing as a single taxpayer or up to $500,000 of capital gains if they are married and filing jointly.

To qualify for the exclusion, the seller generally must meet the following conditions:

• The person owned the home for at least 2 of the 5 years before the sale
• The home was used as the principal residence for at least 2 of the 5 years before the sale
• The taxpayer has not claimed the capital gains tax exclusion on the sale of another home within the previous 2 years

The 2 years of ownership and use do not need to take place at the same time. That is, if a person owned the home for 2 years during the 5-year period prior to the sale, and they lived in the home as their primary residence for a different 2-year period within those 5 years, they will qualify for the exclusion. In cases involving married couples, one spouse must meet the ownership test, but both spouses are required to meet the use test.

State Taxes on the Sale of a Home in California

California imposes taxes on the income earned through the sale of a home in the state. However, the state follows the same rules for exemption as the IRS. If a single person sells their primary residence, and the gain is less than $250,000, they generally will not be required to report the sale and pay taxes. For married couples or registered domestic partners, the exclusion will apply for up to $500,000 of gain. However, if the gain from the sale of a home exceeds these limits, the remaining amount may be subject to California income tax.

California Income Tax and Residency

California imposes state income taxes on residents. In general, California residents are taxed on all income they earn, regardless of where it is earned. State income taxes will apply to wages, business income, and investment income from outside the state. If a person’s principal residence is located in California, they will be required to pay state income taxes.

Nonresidents will generally only be taxed on income earned in California, such as:

• Wages earned in California
• Rental income from property located in California
• Business income from activities in California

California Property Tax Homeowners’ Exemption

The location of a person’s principal residence may also affect the property taxes they pay in California. The state provides a homeowners’ exemption that can reduce property tax obligations. If a property is a person’s principal residence, they can receive a $7,000 reduction in the taxable value of the property. To qualify for this exemption, the homeowner must occupy the property as of January 1 of the tax year, and a claim form must be filed with the county assessor.

Contact Our San Jose Tax Attorney

Questions about residency, home sales, and property taxes can become complicated, especially in situations where a person owns multiple homes or divides their time between different states. At John D. Teter Law Offices, our San Jose, CA tax lawyer can help taxpayers understand the federal and state tax rules that apply to the properties they own. We can help evaluate a taxpayer’s residency status, address potential tax controversies, and take steps to minimize taxes or mitigate penalties whenever possible. Contact our office at 408-866-1810 to arrange a consultation and get help with tax-related issues.