Is Buying a Home Tax Deductible in California? Complete 2026 Guide
The home purchase itself isn't tax deductible, but California homeowners can claim significant deductions for mortgage interest (up to $750,000 federal / $1,000,000 California), property taxes under the expanded $40,400 SALT cap (2026), and—new this year—private mortgage insurance premiums. These deductions can reduce your tax liability by thousands annually.
What Home Buying Costs Are Tax Deductible in California?
California homeowners can deduct several costs associated with homeownership, though not the purchase price itself. The primary deductible expenses include mortgage interest, property taxes, and certain loan-related fees. These deductions apply to both primary residences and qualifying second homes.
Understanding how federal and California state tax rules interact is crucial for maximizing your savings—California has several provisions that differ from federal law, sometimes to your advantage.
Federal vs. California Tax Deduction Rules: 2026
Mortgage Interest Deduction: California Rules and Limits
Mortgage Interest Deduction
Largest Tax BenefitThe mortgage interest deduction represents the largest tax benefit for most California homeowners. The One Big Beautiful Bill Act made the $750,000 debt limit permanent for homes purchased after December 15, 2017. Homes purchased before this date can still deduct interest on up to $1 million.
California Advantage: California did not conform to the federal $750,000 limit and still allows mortgage interest deductions on up to $1,000,000 of home acquisition debt. This means California homeowners with mortgages between $750,000 and $1 million can claim the difference as a state itemized deduction adjustment.
A Pasadena homeowner purchases a $1.2 million home with a $960,000 mortgage at 6.5% interest.
Annual interest paid: $62,400
Federal deductible amount: Interest on $750,000 = $48,750
California deductible amount: Interest on $960,000 = $62,400
At 9.3% CA tax rate = ~$1,269 additional state tax savings
SALT Deduction: Major 2026 Expansion
State and Local Tax (SALT) Deduction
Expanded 2026The SALT deduction cap increased dramatically under the One Big Beautiful Bill Act—from $10,000 to $40,000 for 2025, with 1% annual inflation adjustments making the 2026 cap $40,400 ($20,200 for married filing separately).
What's included: State income taxes OR sales taxes (choose one), plus property taxes. For most California homeowners, state income taxes plus property taxes easily exceed the new cap.
The expanded SALT deduction phases out for taxpayers with modified AGI above $500,000 ($250,000 MFS). The deduction reduces by 30% of income above this threshold, reverting to $10,000 at $600,000+ AGI. High-income California earners may see limited benefit.
A Los Angeles homeowner with a $1 million home:
CA State Income Tax: ~$25,000
LA County Property Tax (1.25%): ~$12,500
Total SALT: $37,500
New 2026 cap: Can deduct full $37,500
Additional deduction: $27,500 → ~$6,050 federal tax savings (22% bracket)
Private Mortgage Insurance (PMI): New 2026 Deduction
PMI Deduction
New for 2026Starting in 2026, private mortgage insurance premiums are now treated as deductible mortgage interest under federal law. This benefits buyers who put down less than 20% and are required to carry PMI.
Phase-out: The PMI deduction phases out at AGI above $100,000 ($50,000 MFS), reducing by 10% for each $1,000 over the threshold. Fully phased out at $110,000 AGI.
California does not allow a deduction for mortgage insurance premiums. This deduction only reduces your federal tax liability, not your California state taxes.
First-time buyer with 10% down on $800,000 home, AGI of $95,000:
Annual PMI cost: ~$4,800
Federal tax savings (22% bracket): ~$1,056
Points and Loan Origination Fees
Points paid to reduce your mortgage interest rate are generally deductible in the year of purchase, provided they meet IRS requirements. In California's competitive market, buyers often pay points to secure better rates on jumbo loans.
Requirements for immediate deduction:
What Home Purchase Costs Are NOT Deductible?
Documentation Required for Tax Deductions
Required Records Checklist
Maintain records for at least 3 years after filing—7 years recommended for home purchases.






