California SALT Deduction Calculator 2026

California has the highest state income tax rates in the nation, with a top marginal rate of 13.3%. Combined with significant property taxes driven by high home values, California residents were among the most impacted by the old $10,000 SALT cap. The increase to $40,400 provides substantial relief.

California's Progressive Income Tax

California's income tax has 10 brackets, with rates ranging from 1% to 13.3%. The highest rate applies to income over $1 million for single filers. Even at moderate incomes, California's rates are higher than most states: a single filer earning $120,000 can expect to pay an effective state tax rate of approximately 7-8%, resulting in a state income tax bill of $8,000 to $10,000.

Property Taxes and Proposition 13

While California's Proposition 13 limits property tax increases to 2% per year and caps the base rate at 1% of assessed value, the state's extremely high home prices mean property tax bills are still significant. The median home value in California exceeds $700,000, and in areas like the San Francisco Bay Area, Los Angeles, and San Diego, median values can exceed $1 million. This results in annual property tax bills of $7,000 to $15,000+ for many homeowners.

Worked Example: CA Single Filer Earning $120,000

Consider a single filer living in California earning $120,000:

• CA State Income Tax: ~$9,000
• Property Tax: ~$8,000
• Total SALT: $17,000

Under the old $10,000 cap, they could only deduct $10,000 of their $17,000 in SALT payments. Under the new $40,400 cap, they can deduct the full $17,000. That's an additional $7,000 in deductions. At the 22% federal tax bracket, this translates to approximately $1,540 in annual tax savings.

Why California Residents Benefit from the SALT Increase

California's combination of the nation's highest income tax rates and high property values (despite Proposition 13 protections) means most middle-class and upper-middle-class Californians exceed the old $10,000 SALT cap. The increased cap to $40,400 is especially valuable for California homeowners in high-cost areas like the Bay Area, Los Angeles, Orange County, and San Diego, where the combination of state income tax and property tax routinely reaches $15,000 to $30,000 or more.

Source: California Franchise Tax Board