The SALT deduction lets you deduct state and local taxes on your federal return — but it is capped at $10,000 per return. If you live in a high-tax state and own a home, you likely hit this limit and cannot deduct every dollar you pay in state and local taxes.
What Is the SALT Deduction?
SALT stands for State and Local Taxes. It is an itemized deduction on Schedule A that lets you reduce your federal taxable income by the amount you pay in:
- State and local income taxes (or general sales taxes in states without income tax)
- Property taxes on your primary home and other personal-use real estate
The IRS does not let you deduct both state income taxes and sales taxes — you must pick one. Most people in states with income taxes choose income taxes, which are typically higher.
The $10,000 SALT Cap
The Tax Cuts and Jobs Act of 2017 capped the SALT deduction at $10,000 per tax return starting in 2018. This cap applies regardless of filing status — a single person, a married couple filing jointly, and a head of household all share the same $10,000 ceiling.
SALT Cap by Filing Status (2026)
| Filing Status | SALT Cap |
|---|---|
| Single | $10,000 |
| Married Filing Jointly | $10,000 |
| Married Filing Separately | $5,000 each |
| Head of Household | $10,000 |
Note: Married filing separately each get $5,000 — not $10,000 each. Choosing separate returns to claim more SALT does not work.
What Counts Toward the SALT Cap
| Tax Type | Counts Toward Cap? |
|---|---|
| State income tax | Yes |
| Local income tax (e.g., NYC, Philadelphia) | Yes |
| State general sales tax (in lieu of income tax) | Yes |
| Personal property taxes (e.g., vehicle registration based on value) | Yes |
| Real property taxes on primary home | Yes |
| Real property taxes on second home | Yes |
| Foreign income taxes | No (separate foreign tax credit) |
| Property taxes on rental property | No (deducted as business expense) |
| Estate and inheritance taxes | No |
| Federal income taxes | Never deductible |
Who Actually Benefits
To claim the SALT deduction at all, you must itemize deductions rather than take the standard deduction ($15,000 single / $30,000 married filing jointly in 2026). That means you need enough total itemized deductions — SALT, mortgage interest, charitable contributions — to exceed your standard deduction.
When SALT Helps You Most
| Situation | Likely Impact |
|---|---|
| High-tax state (CA, NY, NJ, IL) + homeowner | Cap hit quickly; limited benefit |
| No income tax state + high sales tax | Sales tax deduction applies |
| Low-tax state + moderate property taxes | May not reach cap |
| Renter in high-tax state | State income tax deduction only |
Worked Example: New Jersey Homeowner
Maria files jointly with her spouse in New Jersey. In 2026:
- State income tax paid: $14,000
- Property tax on primary home: $12,000
- Total state and local taxes: $26,000
SALT deduction claimed: $10,000 (capped)
Amount she cannot deduct: $16,000
At a 22% federal marginal rate, the cap costs her approximately $3,520 in extra federal taxes compared to deducting all $26,000.
Compare this to a single renter in Texas:
- No state income tax: $0
- No property tax (renter): $0
- Sales tax estimate (using IRS tables): $1,400
She deducts $1,400 in sales taxes — well under the cap, and likely below the standard deduction anyway.
SALT and the Standard Deduction Trade-Off
Because the 2026 standard deduction is $30,000 for married couples, most households do not itemize at all. SALT only provides a federal tax benefit if you have enough other deductions to push you above the standard deduction.
Minimum Other Itemized Deductions Needed to Benefit from SALT
| Filing Status | Standard Deduction | Min Other Deductions Needed (if you max SALT cap) |
|---|---|---|
| Single | $15,000 | $5,001+ beyond $10,000 SALT |
| Married Filing Jointly | $30,000 | $20,001+ beyond $10,000 SALT |
| Head of Household | $22,500 | $12,501+ beyond $10,000 SALT |
Practically, you need substantial mortgage interest or charitable donations to make itemizing worthwhile, even if you max the SALT cap.
Strategies for High-Tax State Residents
Bunch deductions. In alternating years, accelerate deductible expenses (prepay charitable pledges, property taxes if permitted) to push total deductions above the standard deduction in “on” years, then take the standard deduction in “off” years.
Claim all eligible property taxes. If you own a vacation home or second property, those property taxes also count toward your $10,000 SALT limit — make sure you’re tracking them.
Use a donor-advised fund. Large charitable contributions in a single year can combine with your $10,000 SALT to push you above the standard deduction threshold.
Consider your state’s SALT workaround. Many states (California, New York, New Jersey, and others) have enacted pass-through entity (PTE) tax elections that let business owners pay state income tax at the entity level rather than the individual level, bypassing the personal SALT cap. If you own an S-corp, LLC, or partnership, ask your CPA whether your state offers this.
How to Claim the SALT Deduction
You claim SALT on Schedule A (Form 1040), Line 5. You report:
- State and local income taxes on Line 5a
- State and local general sales taxes on Line 5a (using IRS optional sales tax tables or actual receipts)
- Real estate taxes on Line 5b
- Personal property taxes on Line 5c
- Total capped at $10,000 on Line 5e
Keep records of your state tax payments (Form W-2 Box 17 for state income tax withheld, estimated tax payment confirmations) and property tax bills.
The $10,000 SALT cap applies to the combined total of property tax and state or local income tax — see property tax deduction for how the two interact when you have high property taxes. SALT is one of the main deductions reported on Schedule A, alongside mortgage interest, medical expenses, and charitable contributions. Whether itemizing beats the standard deduction depends on your total — see itemized vs. standard deduction to compare.
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