How to Claim SALT Tax Deduction – The State and Local Tax (SALT) deduction remains one of the most valuable itemized deductions for U.S. taxpayers living in high-tax states. With the recent increase in the SALT cap under the One Big Beautiful Bill Act (enacted July 2025), many Americans can now deduct significantly more in 2025 and beyond. This guide explains exactly how to claim SALT tax deduction on your 2025 federal tax return (filed in 2026), using the latest IRS rules.
What Is the SALT Tax Deduction?
The SALT deduction lets you reduce your taxable income by the amount you paid in state and local taxes during the tax year. It includes:
- State and local income taxes (or general sales taxes, if you elect)
- Real estate (property) taxes
- Personal property taxes
You can only claim it if you itemize deductions on Schedule A (Form 1040). It does not apply if you take the standard deduction.
Current SALT Deduction Limits for 2025 (and 2026)
For tax year 2025, the SALT cap is $40,000 for single, head of household, or married filing jointly filers.
For married filing separately, the cap is $20,000.
This is a major increase from the previous $10,000/$5,000 limit. The higher cap applies for tax years 2025–2029 and increases by about 1% each year (e.g., $40,400 in 2026). It will revert to $10,000 in 2030 unless Congress acts.
Important phase-out for higher earners:
If your modified adjusted gross income (MAGI) exceeds $500,000 ($250,000 if married filing separately) in 2025, the cap is reduced by 30 cents for every dollar over the threshold. The deduction will never drop below $10,000 ($5,000 if married filing separately).
Use the IRS State and Local Tax Deduction Worksheet (in Schedule A instructions) if your AGI is over the threshold.
Who Can Claim the SALT Deduction?
You qualify if:
- You itemize deductions on Schedule A
- You paid qualifying state and local taxes during the tax year
- You are a U.S. taxpayer (including residents of U.S. territories in some cases)
Most homeowners and residents of high-tax states (California, New York, New Jersey, Illinois, etc.) benefit the most. You cannot claim SALT if you take the standard deduction—even if your total SALT payments exceed the cap.
Eligible State and Local Taxes You Can Deduct
On Schedule A, Line 5, you can include:
Line 5a: State and local income taxes OR general sales taxes (choose one, not both)
- Income taxes: Amounts withheld from paychecks, estimated payments, and prior-year taxes paid in 2025
- Sales taxes: Actual receipts or IRS Optional Sales Tax Tables (easier for most people)
Line 5b: State and local real estate taxes (property taxes on your home or other non-business real property)
Line 5c: State and local personal property taxes (e.g., value-based car registration fees)
What does NOT qualify: Foreign real estate taxes, business taxes, charges for services (water, trash), or assessments that increase property value.
Pro tip: If you received a state or local tax credit in exchange for a charitable contribution, special safe-harbor rules may let you still claim the SALT amount.
Step-by-Step Guide: How to Claim SALT Tax Deduction on Your 2025 Return?
- Gather your documents
- Form W-2 (Box 17 for state income tax withheld)
- Property tax statements or mortgage Form 1098 (Line 10 for real estate taxes paid)
- Estimated tax payment records
- Car registration receipts (for personal property taxes)
- Sales tax receipts (if using actual expenses)
- Decide whether to itemize
Compare your total itemized deductions (including SALT) against the 2025 standard deduction. Itemize only if itemized total is higher. - Complete Schedule A (Form 1040)
- Enter income or sales taxes on Line 5a
- Enter real estate taxes on Line 5b
- Enter personal property taxes on Line 5c
- Add them on Line 5d
- Apply the SALT cap on Line 5e
- Enter the smaller of Line 5d or $40,000 ($20,000 if married filing separately).
- If your AGI exceeds $500,000, complete the IRS State and Local Tax Deduction Worksheet to apply the phase-out.
- File your return
Attach Schedule A to Form 1040 or 1040-SR. Tax software (TurboTax, H&R Block, TaxAct) automatically handles the cap and worksheet.
How to Elect Sales Taxes Instead of Income Taxes?
Check the box on Schedule A Line 5a and use either:
- Actual expenses (keep all receipts)
- IRS Optional Sales Tax Tables (most people choose this—use the Sales Tax Deduction Calculator at IRS.gov)
You must use the same method (tables or actual) if married filing separately and both spouses elect sales taxes.
Common Mistakes to Avoid When Claiming SALT
- Claiming both income and sales taxes on Line 5a
- Including non-deductible charges (e.g., water bills, HOA fees)
- Forgetting to reduce for refunds or rebates received in 2025
- Not using the phase-out worksheet when AGI is over $500,000
- Claiming SALT while taking the standard deduction
Tips to Maximize Your SALT Deduction in 2026 and Beyond
- Pay 2025 property taxes and estimated state taxes before December 31, 2025 (if you itemize)
- Use the IRS Sales Tax Calculator for the highest possible deduction
- Track actual sales taxes on big-ticket items (cars, boats, RVs)
- Consider bunching charitable contributions or other itemized deductions to make itemizing worthwhile
- Check for state-specific SALT relief programs (some states offer workarounds via charitable contributions)
Frequently Asked Questions About Claiming SALT
Can I claim SALT if I take the standard deduction?
No. You must itemize on Schedule A.
Does the higher $40,000 cap apply to 2026 taxes?
Yes—the cap rises to $40,400 in 2026 (with updated phase-out thresholds).
What if my SALT payments exceed the cap?
You can only deduct up to the cap (after any phase-out).
Do I need receipts for property taxes?
Yes—keep your tax bill or mortgage statement showing 2025 payments.
For the most accurate and up-to-date guidance, always refer to the official 2025 Instructions for Schedule A (Form 1040) on IRS.gov or consult a tax professional. Tax laws can change, and your individual situation matters.
Start preparing now—gather your 2025 tax documents and run the numbers in your tax software to see how much the increased SALT cap can save you this year.