SALT Deduction 2026: New $40K Cap Explained

Since 2018, taxpayers who itemize deductions have been limited to deducting just $10,000 in state and local taxes (SALT) on their federal return. For residents of high-tax states, this cap was a significant tax increase. The One Big Beautiful Bill Act (OBBBA) raises that cap to $40,000, effective for the 2026 tax year.

Here's what the new SALT cap means, who benefits the most, and whether it actually changes your tax bill.

What the SALT Deduction Covers

SALT stands for State and Local Taxes. When you itemize your federal tax return, the SALT deduction allows you to deduct certain taxes you paid to state and local governments. It includes:

• State income tax (or state sales tax if you choose that instead)
• Local income tax (city or county taxes, where applicable)
• Property tax on real estate you own

Before 2018, there was no cap — you could deduct the full amount of state and local taxes paid. The Tax Cuts and Jobs Act (TCJA) in 2017 capped this at $10,000 ($5,000 for married filing separately), which disproportionately affected taxpayers in states with high income taxes and high property values.

The New $40,000 Cap Under OBBBA

The OBBBA raises the SALT cap from $10,000 to $40,000 for single filers and married filing jointly. The cap for married filing separately goes to $20,000. This applies starting with the 2026 tax year.

Important details:

• Phase-out: The $40,000 cap begins phasing down for filers with AGI above $400,000 (single) or $500,000 (married filing jointly)
• You must still itemize to claim the SALT deduction — the standard deduction doesn't include it
• The $40,000 cap includes all SALT combined — state income tax plus property tax, not $40,000 for each

Use our tax calculator to model your 2026 tax bill with the new SALT cap and see whether itemizing saves you more than the standard deduction.

Who Benefits the Most

The increased SALT cap primarily helps homeowners in high-tax states who were hitting the $10,000 ceiling. The biggest beneficiaries are in:

• New York: State income tax rates up to 10.9%, plus NYC local tax up to 3.876%. Combined with property taxes averaging $6,000-$15,000+, many NY filers easily exceeded $10K in SALT.
• California: State income tax rates up to 13.3%. Even middle-income earners in the 9.3% bracket, combined with property taxes, often exceeded $10K.
• New Jersey: The highest average property taxes in the nation (~$9,500/year) plus state income tax up to 10.75%.
• Connecticut: State income tax up to 6.99% plus property taxes averaging $6,500+/year.
• Illinois: While the income tax rate is a flat 4.95%, property taxes are among the highest in the country, often $8,000-$15,000+ for a median-value home.

Example: NJ Homeowner, $150K Income

• NJ state income tax: ~$7,800
• Property tax: ~$12,000
• Total SALT: $19,800
• Under old $10K cap: Deduct $10,000 (leaving $9,800 on the table)
• Under new $40K cap: Deduct full $19,800
• Additional deduction: $9,800
• Tax savings (22% bracket): ~$2,156

Who It Doesn't Help

Not everyone benefits from the higher SALT cap. It won't help you if:

• You take the standard deduction. In 2026, the standard deduction is $15,000 (single) or $30,000 (married). If your total itemized deductions — including SALT, mortgage interest, and charitable contributions — don't exceed the standard deduction, the SALT cap doesn't matter.
• You live in a no-income-tax state with low property taxes. States like Texas, Florida, Tennessee, and Nevada have no state income tax. If your property taxes are under $10,000, you were never hitting the old cap anyway.
• Your AGI is above the phase-out threshold. High earners above $400K/$500K see the cap reduced.
• You rent and don't pay property tax. Renters with modest state income tax bills rarely exceed $10K in SALT.

Check your paycheck calculator results to see how much state and local tax you're actually paying and whether the new cap changes your strategy.

Standard Deduction vs. Itemizing in 2026

The real question for most taxpayers is whether the $40K SALT cap makes itemizing worthwhile. You'll want to add up:

• SALT: State income tax + property tax (now capped at $40K)
• Mortgage interest: Deductible on up to $750,000 of mortgage debt
• Charitable contributions: Cash and qualified non-cash donations
• Medical expenses: Only the amount exceeding 7.5% of AGI

If your total exceeds $15,000 (single) or $30,000 (married), itemizing saves you money. For a married couple in NJ paying $20,000 in SALT and $12,000 in mortgage interest, their itemized total of $32,000+ easily beats the $30,000 standard deduction — but only by about $2,000. The savings are meaningful but not always dramatic.

The Bottom Line

The $40K SALT cap is a significant improvement over the $10K cap for homeowners in high-tax states. If you live in NY, CA, NJ, CT, or IL and own property, you'll likely see a real reduction in your federal tax bill. But if you're a renter in a no-income-tax state or your total SALT is under $10K, this change doesn't move the needle. Run your numbers through our tax calculator to see exactly how the new cap affects your 2026 tax return.