When Does SALT Deduction Expire Guide – The State and Local Tax (SALT) deduction has been a hot topic for American taxpayers, especially those in high-tax states like California, New York, New Jersey, Illinois, and Connecticut. Many searched for “when does the SALT deduction expire” ahead of the 2025 tax law changes. Thanks to the One Big Beautiful Bill Act (OBBBA), signed into law in July 2025, the rules have shifted significantly.
This comprehensive guide explains the current SALT deduction rules as of 2026, when the original cap was set to expire, what the new law changed, and how it affects your 2026 taxes (filed in 2027). All information is based on official IRS guidance and trusted tax authorities.
What Is the SALT Deduction?
The SALT deduction lets you subtract certain state and local taxes from your federal taxable income if you itemize deductions on Schedule A of Form 1040. Eligible taxes include:
- State and local income taxes (or sales taxes in states without income tax)
- Real estate property taxes
- Personal property taxes (such as vehicle taxes in some states)
Before any caps, this deduction could be unlimited. It benefits homeowners and residents of high-tax states the most by lowering your federal tax bill.
The Original SALT Deduction Cap Under the TCJA
The Tax Cuts and Jobs Act (TCJA) of 2017 introduced a temporary $10,000 cap ($5,000 for married filing separately) on SALT deductions. This limit applied to tax years 2018 through 2025. Lawmakers designed it to offset other tax cuts while raising revenue.
Many expected the cap to “expire” after December 31, 2025, allowing an unlimited SALT deduction starting in tax year 2026. This would have provided major relief for taxpayers in high-tax states.
Did the SALT Cap Expire After 2025? What Changed in 2025
No—the original $10,000 cap did not fully expire into an unlimited deduction. Instead, the One Big Beautiful Bill Act (OBBBA) modified the rules effective for tax year 2025.
Congress chose to raise the cap temporarily rather than eliminate it entirely or make the $10,000 limit permanent. The higher cap now applies through 2029 before reverting.
Current SALT Deduction Limits for 2025–2029
Here are the updated SALT caps under OBBBA:
| Tax Year | Single / Joint / HoH Filers | Married Filing Separately | Notes |
|---|---|---|---|
| 2025 | $40,000 | $20,000 | Base increase |
| 2026 | $40,400 | $20,200 | +1% inflation adjustment |
| 2027 | $40,804 | $20,402 | +1% |
| 2028 | $41,212 | $20,606 | +1% |
| 2029 | $41,624 | $20,812 | +1% |
Starting in 2030, the cap reverts to the original TCJA levels: $10,000 ($5,000 for married filing separately).
When Will the Higher SALT Deduction Cap Expire?
The increased SALT cap (currently around $40,400 for 2026) expires after tax year 2029. For tax years 2030 and beyond, the deduction limit returns to $10,000 unless Congress passes new legislation to extend or change it.
This means:
- Tax years 2025–2029: Higher temporary cap applies.
- Tax year 2030 onward: Back to $10,000 cap (no phase-out for high earners under the old rules).
Taxpayers should plan now for the 2030 reversion, as it could increase federal tax liability significantly for those in high-tax areas.
Phase-Out Rules for High-Income Taxpayers
The higher cap phases out for higher earners:
- Phase-out begins at modified adjusted gross income (MAGI) of $500,000 ($250,000 married filing separately) in 2025.
- Full phase-out to the $10,000 cap occurs at $600,000 ($300,000 married filing separately).
- These thresholds also rise by 1% annually through 2029.
For 2026 specifically:
- Phase-out starts at approximately $505,000 MAGI.
- Full reduction at $606,000 MAGI (exact figures indexed per IRS inflation adjustments).
How the SALT Changes Impact US Taxpayers in 2026?
- Homeowners and high-tax state residents: The jump to $40,400+ can save thousands in federal taxes compared to the old $10,000 limit.
- Itemizing vs. standard deduction: More taxpayers may now benefit from itemizing, especially with the higher SALT limit combined with mortgage interest and charitable contributions.
- High-income filers: Those above the phase-out thresholds see little or no benefit from the increase.
- Overall federal budget: The expanded deduction reduces federal revenue, which is why lawmakers made it temporary.
Strategies to Maximize Your SALT Deduction in 2026 and Beyond
- Itemize if beneficial — Run the numbers with tax software or a CPA. The higher cap often makes itemizing worthwhile now.
- Pay 2026 state taxes strategically — Consider prepaying 2026 estimated taxes before year-end if it helps stay under the cap (consult your tax advisor for rules).
- Track all eligible taxes — Include property taxes, income taxes withheld, and sales taxes where applicable.
- Plan for 2030 — Build tax reserves or adjust investments now for the expected return to the $10,000 cap.
- State workarounds — Some states offer pass-through entity tax (PTET) elections that can help bypass federal SALT limits for business owners.
Always verify with a qualified tax professional, as individual circumstances vary.
Frequently Asked Questions About SALT Deduction Expiration
Will the SALT deduction ever be unlimited again?
Not under current law. The higher cap ends after 2029, reverting to $10,000 in 2030 unless Congress acts.
Does OBBBA make any part of the SALT cap permanent?
No. Only the $10,000 base cap structure returns permanently in 2030; the temporary $40,000+ increase sunsets.
How do I know my 2026 SALT limit?
Use IRS inflation-adjusted figures released each fall. For 2026, it is $40,400 for most filers.
Should I change my withholding or estimated payments?
Yes—update your W-4 or estimated tax payments to reflect the higher deduction if you itemize. The IRS provides guidance on this.
The SALT deduction rules remain complex and subject to future congressional changes. For the most accurate advice tailored to your situation, consult a tax advisor or use IRS.gov resources. Stay informed as tax laws can evolve quickly.
Last updated: April 2026. Tax laws can change; verify with official IRS publications for your specific filing year.