Millions of homeowners in high-tax states are about to see a major shift on their federal tax returns. The state and local tax deduction, known as SALT, has been quadrupled from its original $10,000 cap to $40,000 under the One Big Beautiful Bill Act signed by President Trump on July 4, 2025. The new legislation raises the SALT deduction cap to $40,000 for single and joint filers1, and the change is already reshaping how families in states like New York, New Jersey, and California plan their finances heading into 2026.
But the relief comes with strings attached, and not everyone will benefit equally.
How the New $40,000 SALT Cap Works
Initial House proposals would have increased the SALT deduction cap to $30,000.2 However, negotiations, driven in part by Republicans representing high-tax states, ultimately pushed the cap higher. Lawmakers including Representatives Mike Lawler and Nick LaLota argued that a lower threshold would continue to impose disproportionate tax burdens on residents in states with elevated income and property taxes.2
The final compromise landed at $40,000, four times the old limit.
The full deduction phases out for filers with modified adjusted gross income above $500,000 ($250,000 in the case of a married individual filing separately), and reverts to $10,000 for incomes of $600,000 and above.1
Here is a quick breakdown of how the phaseout works in practice:
| Income (MAGI) | SALT Cap Available | Notes |
|---|---|---|
| $450,000 or below | $40,000 | Full benefit |
| $550,000 | $25,000 | Reduced by 30% of excess over $500K |
| $600,000+ | $10,000 | Fully phased out |
A couple with $550,000 of AGI would exceed the $500,000 threshold by $50,000. Applying the 30% phaseout, $15,000 of the deduction would be disallowed. Starting from the $40,000 cap, the taxpayers would still be eligible to deduct $25,000 in SALT.3
The cap also increases by 1% each year through 2029. In 2026 the limit is $40,400 and the income threshold is $505,000; in 2027 the limit is $40,804 and the income threshold is $510,050, and so on.4
While the deduction and the phase-out levels will increase by 1% a year, these changes are in effect through 2029, after which point the cap reverts to $10,000.1
SALT deduction cap increase $40,000 homeowners high tax states 2026
Why the SALT Cap Became So Controversial
The SALT deduction has been part of the federal tax code for over a century. It lets taxpayers who itemize subtract state and local taxes from their federal taxable income. The SALT deduction cap was first introduced by the Tax Cuts and Jobs Act (TCJA) in 2017 under Donald Trump, which limited the SALT tax deduction to $10,000 per year.5
That limit stung hard in states where property and income taxes run high. The TCJA cap hit high-tax states like New York, New Jersey, California, and Massachusetts especially hard. Many taxpayers in those states were no longer able to deduct their full property and income tax payments, resulting in higher federal tax bills.6
In a voter survey commissioned by the NAR in April, 61% of respondents supported increasing the state and local tax deduction or removing the limit altogether.4
Governors and local officials have pressed Congress for changes ever since. The Senate’s early version of the legislation took a different approach, proposing to restore the $10,000 cap.2 That disagreement between the House and Senate stalled reform efforts for years before the final compromise took shape.
Who Benefits Most From the Higher SALT Cap
Not all taxpayers will feel this change in the same way. The biggest winners are homeowners in high-tax states who already itemize their deductions.
The primary beneficiaries of the higher SALT cap will be six-figure households in high-tax states, including New York, California, New Jersey, and Connecticut.7
The center estimates about 10% of taxpayers nationwide will benefit from it in 2026.8 That may sound small, but for those families, the savings are real.
Consider this example: Say you and your spouse live in a high-tax state like New Jersey. You have a combined annual income of $450,000 and pay $25,000 in state income taxes and $15,000 in property taxes, totaling $40,000 in SALT payments. Under the TCJA rules, you can only deduct $10,000 of your $40,000 SALT payments on your federal tax return. However, under the new legislation, you will be able to deduct the full $40,000.2
That is a $30,000 increase in deductions, which could translate into thousands of dollars in tax savings depending on your bracket.
On the flip side:
- Low-income and middle-income households will likely not benefit from the SALT cap increase, given that most don’t have $40,000 (or $30,000 or $20,000) in SALT liability.7
- In 2022, 90% of taxpayers claimed the standard deduction7, which means they skip itemizing altogether.
- Renters and those in low-tax states will see little to no change.
“Any changes to lift the cap would primarily benefit higher earners.” Garrett Watson, Director of Policy Analysis, Tax Foundation
The deal to raise the cap to $40,000 and to slowly phase it out above $500,000 in income would deliver a nearly $10,000 tax cut to an illustrative household making $500,000.9
The Fiscal Cost and the Deficit Debate
Relief for some means lost revenue for the government. And budget experts have raised serious concerns.
According to the Heritage Foundation’s analysis, increasing the SALT cap would increase deficits in the 10-year budget window by approximately $377 billion compared to extending the current cap.10 That figure alone is nearly as large as the combined cost of several other major tax provisions in the bill.
The broader law carries a heavy price tag. The One Big Beautiful Bill Act will cost $3.4 trillion over the next 10 years, and more than $4 trillion when accounting for additional interest owed on the national debt.11
While CBO projects the law will add $4.7 trillion to debt over the coming decade, that amount could ultimately be much higher if several of the law’s temporary policies are made permanent.12
Critics from both sides of the aisle question whether the tradeoff is worth it. The Tax Foundation warned that “the bill is already suffering from a math problem, as the tax cuts add up to over $4 trillion, and spending cuts have been pared back.”2
Housing groups, however, argue the SALT relief supports homeownership in tight markets and could ease the burden for families stretched thin by rising property taxes.
What Taxpayers Should Do Right Now
The window for this higher deduction runs from tax year 2025 through 2029. Starting in 2030, the cap permanently reverts to $10,000, ending the temporary expansion period.2 That gives families five filing seasons to take advantage of the bigger write-off.
Here are some steps to consider:
- Review your filing strategy. After the 2017 cap and doubled standard deduction, itemizers dropped from about 30% pre-2017 to just 10% in 2022. With the higher SALT cap, many households may again find itemizing beneficial.13
- Track all qualifying tax payments. State income tax withholding, estimated quarterly payments, and property tax bills all count toward your SALT total.
- Check if the phaseout applies to you. If your household income is near $500,000, even a small shift could change how much you can deduct.
- Pair SALT with other deductions. Strategies for the SALT deduction cap in 2026, such as charitable giving and mortgage interest planning, regain value13 when more households can itemize.
- Talk to a tax professional. The interaction between the new SALT cap, the alternative minimum tax, and filing status rules can get complicated fast.
The SALT deduction increase may be temporary, but its impact on family budgets across America is anything but small. For homeowners in high-tax states, this is the most significant shift in years, a real chance to lower federal tax bills during a time of rising costs. For those who do not itemize or live in low-tax states, the benefit may feel distant. Either way, the debate over who should carry the tax burden, and how much, is far from over. If this change affects you or someone you know, share this article and start the conversation.
