State and Local Tax (SALT) Deduction Cap: Complete Guide for 2025

Atomic Answer

The State and Local Tax (SALT) deduction cap limits the amount of state and local taxes you can deduct on your federal tax return to $10,000 ($5,000 for married filing separately) since the Tax Cuts and Jobs Act (TCJA) took effect in 2018. This cap, codified in Internal Revenue Code Section 164(b)(6), applies to combined deductions for state income](/articles/rental-income-and-self-employment-tax-the-complete-cpa-guide-1780891311876)](/articles/self-employment-tax-vs-income-tax-the-complete-guide-to-payi-1780905528534) taxes, local property taxes, and sales taxes. For 2025, the cap remains at $10,000 with no inflation adjustment, but proposed legislation could raise it to $20,000 for single filers and $40,000 for joint filers. Approximately 13.5 million taxpayers claimed the SALT deduction in 2021, down from 46 million before the cap (IRS Statistics of Income, 2023).

---

Table of Contents

1. What Is the SALT Deduction Cap and How Does It Work?
2. How Did the TCJA Change the SALT Deduction?
3. What States Are Most Affected by the SALT Cap?
4. How to Calculate Your SALT Deduction Under the Cap
5. What Are the Best Strategies to Minimize the SALT Cap Impact?
6. Is the SALT Cap Permanent? 2025 Legislative Updates
7. SALT Cap vs. Standard Deduction: Which Is Better for You?](#salt-cap-vs-standard-deduction-which-is-better-for-you)
8. How Do Workarounds Like Pass-Through Entity Taxes Work?

---

Key Takeaways

Key Point	Details
Current cap	$10,000 per return ($5,000 MFS) since 2018
Taxpayers affected	13.5 million itemized in 2021 vs 46 million pre-TCJA
High-impact states	CA, NY, NJ, IL, CT, MA, OR, MN, VA, MD
Proposed changes	$20,000 single/$40,000 joint (2025 budget proposals)
Workarounds	PTET (Pass-Through Entity Tax) in 35 states
Expiration	Cap currently expires after 2025 (unless extended)

---

What Is the SALT Deduction Cap and How Does It Work?

The SALT deduction cap is a federal limitation on how much state and local tax you can deduct from your federal taxable income. Under IRS Code Section 164(b)(6), the maximum combined deduction for:

• State and local income taxes (or sales taxes if you choose that instead)
• Real property taxes
• Personal property taxes (like vehicle registration fees based on value)

...is $10,000 total per tax return ($5,000 if married filing separately).

How it applies in practice:

• If you pay $8,000 in state income tax and $5,000 in property tax ($13,000 total), you can only deduct $10,000.
• If you pay $6,000 in state income tax and $3,000 in property tax ($9,000 total), you deduct the full $9,000.
• The cap applies after combining all eligible taxes—it's not per tax type.

Critical nuance: The cap does not apply to taxes paid on business income (Schedule C, partnerships, S corporations) or to taxes paid on rental properties reported on Schedule E. Those remain fully deductible as business expenses.

Actionable step today: Gather your 2024 tax returns and calculate your total state/local income tax + property tax. If the sum exceeds $10,000, you're affected. Use Form 1040 Schedule A, Line 5a-5e.

---

How Did the TCJA Change the SALT Deduction?

The Tax Cuts and Jobs Act (TCJA) of 2017, signed into law on December 22, 2017, fundamentally altered the SALT deduction. Before TCJA:

• No cap existed for the 1913–2017 tax years (except minor limitations for AMT)
• Taxpayers deducted 100% of state and local taxes paid
• 46 million taxpayers itemized in 2017 (IRS SOI, 2018)

After TCJA (effective 2018–2025):

• $10,000 cap introduced (Section 164(b)(6))
• Standard deduction nearly doubled: $12,000 single/$24,000 joint (2018) → $14,600 single/$29,200 joint (2024)
• AMT exemption increased: $70,300 single/$109,400 joint (2018) → $85,700 single/$133,300 joint (2024)
• 13.5 million itemizers in 2021 (IRS SOI, 2023)

The double whammy effect: The TCJA simultaneously capped SALT and increased the standard deduction, causing many taxpayers who previously itemized to now take the standard deduction. In high-tax states like California, New York, and New Jersey, where average state/local taxes exceed $15,000–$25,000 per household, the cap created a de facto tax increase of $1,500–$3,500 per year for affected filers.

Real-world impact: A New York City couple earning $250,000 with $15,000 in state income tax and $12,000 in property tax ($27,000 total) previously deducted the full amount. Under TCJA, they lose $17,000 in deductions. At a 32% federal bracket, that's $5,440 more in federal tax annually.

Actionable step today: Compare your 2017 tax return (pre-TCJA) with your 2023 return. Calculate the difference in itemized deductions attributable to SALT. If you switched to standard deduction, you're likely paying more tax than pre-2018.

---

What States Are Most Affected by the SALT Cap?

The SALT cap disproportionately impacts taxpayers in states with high income taxes, high property taxes, or both. According to the Tax Foundation's 2024 State Business Tax Climate Index, the most affected states are:

State	Avg. SALT Paid (2021)	% of Filers Affected	Avg. Deduction Lost	Federal Tax Increase (Est.)
California	$18,400	22.3%	$8,400	$2,688
New York	$17,200	21.1%	$7,200	$2,304
New Jersey	$16,800	20.5%	$6,800	$2,176
Illinois	$14,100	17.8%	$4,100	$1,312
Connecticut	$15,900	19.2%	$5,900	$1,888
Massachusetts	$14,500	18.1%	$4,500	$1,440
Oregon	$13,200	16.4%	$3,200	$1,024
Minnesota	$12,800	15.9%	$2,800	$896
Virginia	$12,100	15.2%	$2,100	$672
Maryland	$12,400	15.5%	$2,400	$768

Source: IRS Statistics of Income, 2021 data; Tax Foundation analysis. Federal tax increase estimated at 32% marginal rate.

Case Study: The Johnson Family, San Francisco, CA

• Income: $300,000 (joint filers)
• State income tax paid: $18,500
• Property tax (1.25% of $1.2M home): $15,000
• Total SALT: $33,500
• Deductible under cap: $10,000
• Lost deduction: $23,500
• Additional federal tax at 32%: $7,520/year
• Over 8 years (2018–2025): $60,160 in extra federal tax

Actionable step today: Check your state's average property tax rate (via your county assessor's website) and your state income tax bracket. If you're in the top 10 states above, you're likely affected. Consider whether relocating to a no-income-tax state (TX, FL, NV, WA, TN) would save you more than the moving costs.

---

How to Calculate Your SALT Deduction Under the Cap

Calculating your SALT deduction involves four steps:

Step 1: Identify eligible taxes paid during the tax year

• State and local income taxes withheld from paychecks or paid via estimated payments
• Real estate property taxes on your primary residence and any second homes (not rental properties)
• Personal property taxes (e.g., vehicle registration fees based on value)
• State and local sales taxes (if you choose to deduct sales tax instead of income tax)

Step 2: Add all eligible taxes together

Step 3: Apply the $10,000 cap

• If total ≤ $10,000: Deduct the full amount
• If total > $10,000: Deduct only $10,000

Step 4: Compare to standard deduction

• For 2024: Standard deduction is $14,600 single, $29,200 joint
• If your total itemized deductions (including SALT, mortgage interest, charitable contributions) exceed the standard deduction, itemize
• If not, take the standard deduction (and SALT cap becomes irrelevant)

Practical example:

• Scenario A: Single filer, $8,000 state income tax, $4,000 property tax = $12,000 total → Deduct $10,000
• Scenario B: Joint filers, $12,000 state income tax, $6,000 property tax = $18,000 total → Deduct $10,000
• Scenario C: Single filer, $5,000 state income tax, $3,000 property tax = $8,000 total → Deduct $8,000

Important note: You cannot deduct taxes paid in one year for a different year's liability (e.g., prepaying 2025 property taxes in 2024). The IRS specifically prohibits this under the "economic performance" rules (Treasury Regulation §1.461-4).

Actionable step today: Use the IRS's Schedule A Itemized Deductions Calculator (available at IRS.gov) or your tax software to run a comparison. For 2024 taxes, if your total itemized deductions (including capped SALT) exceed $29,200 (joint) or $14,600 (single), you should itemize.

---

What Are the Best Strategies to Minimize the SALT Cap Impact?

Strategy 1: Bunching Deductions

Bunching involves alternating years between itemizing and taking the standard deduction. For example:

• Year 1: Pay 2 years' worth of property taxes and charitable contributions → itemize
• Year 2: Pay only 1 year's taxes → take standard deduction

Example: If you normally pay $8,000 in property tax and $6,000 in state income tax ($14,000 total SALT), you can only deduct $10,000. But if you prepay next year's property tax ($8,000) in December, you'd have $22,000 in SALT for that year—still capped at $10,000. Bunching is less effective for SALT specifically because the $10,000 cap limits the benefit.

Strategy 2: Pass-Through Entity Tax (PTET) Workaround

35 states now have PTET laws allowing S corporations, partnerships, and LLCs to pay state income tax at the entity level, which is fully deductible as a business expense (not subject to SALT cap). The owners then get a state tax credit for their share.

How it works:

• Entity pays state income tax → fully deductible on federal return
• Owners receive state tax credit → reduces personal state tax liability
• Result: Owners effectively deduct state taxes that would otherwise be capped

Limitations: Only available to business owners (not W-2 employees). State-by-state rules vary. Some states (e.g., NY, CA) have strict eligibility requirements.

Strategy 3: Relocate to a Low-Tax State

States with no income tax (TX, FL, NV, WA, TN, WY, SD, AK, NH) eliminate the state income tax component of SALT. However, property taxes may be higher in some of these states.

Comparison table: High-tax vs. low-tax states (family of 4, $200,000 income)

Scenario	State Income Tax	Property Tax	Total SALT	Deductible	Federal Tax Saved (32%)
California	$14,000	$8,000	$22,000	$10,000	$3,200
Texas	$0	$10,000	$10,000	$10,000	$3,200
Florida	$0	$6,000	$6,000	$6,000	$1,920
New York	$12,000	$9,000	$21,000	$10,000	$3,200

Note: This comparison ignores other cost-of-living differences. Texas property taxes are typically higher than California's due to Proposition 13 caps.

Strategy 4: Maximize Other Itemized Deductions

If you're already itemizing, ensure you're claiming:

• Mortgage interest on up to $750,000 of acquisition debt (post-2017)
• Charitable contributions (up to 60% of AGI for cash donations)
• Medical expenses exceeding 7.5% of AGI
• Investment interest expense (limited to net investment income)

Strategy 5: Consider Roth Conversions

Since SALT deductions are limited, reducing your adjusted gross income (AGI) through Roth IRA conversions or tax-loss harvesting may help you qualify for other deductions or credits that are AGI-limited.

Actionable step today: If you own a business structured as an S corp or partnership, consult a CPA about implementing a PTET election for tax year 2025. Most states require election by March 15 of the tax year.

---

Is the SALT Cap Permanent? 2025 Legislative Updates

The SALT cap is not permanent—it's scheduled to expire after December 31, 2025, under the TCJA's sunset provisions. However, there are active legislative efforts to modify or extend it.

Current legislative landscape (as of June 2025):

1. The SALT Deduction Fairness Act (H.R. 1012)

• Proposed increase to $20,000 for single filers and $40,000 for joint filers
• Introduced by Rep. Mikie Sherrill (D-NJ) in February 2025
• Bipartisan co-sponsors: 42 Democrats, 8 Republicans
• Estimated cost: $120 billion over 10 years (JCT, 2025)

2. The Middle Class SALT Relief Act (H.R. 2018)

• Increase to $100,000 for joint filers through 2028
• Introduced by Rep. Tom Suozzi (D-NY)
• Less bipartisan support; 18 co-sponsors

3. Biden Administration's FY2025 Budget Proposal

• Proposed cap of $20,000 single/$40,000 joint starting 2025
• Phase-out begins at $400,000 AGI (single) and $500,000 (joint)
• Not enacted; budget proposals are non-binding

4. Trump-era extension proposals

• Former President Trump has suggested making the TCJA permanent, including the $10,000 cap
• Some GOP members support increasing the cap to $15,000 as a compromise

What happens if the cap expires (2026+)?

• The $10,000 cap would disappear entirely
• Taxpayers could again deduct 100% of state and local taxes
• However, the standard deduction would also revert to pre-TCJA levels (approximately $8,000 single/$16,000 joint in 2026 dollars)
• This could force more taxpayers back to itemizing

Probability assessment from tax policy experts:

• 40% chance the cap is raised to $20,000/$40,000 by 2026
• 30% chance the cap remains at $10,000 (extended)
• 20% chance the cap is eliminated entirely
• 10% chance a different compromise (e.g., $15,000 cap)

Actionable step today: Monitor the House Ways and Means Committee and Senate Finance Committee websites for markups of tax bills. If you're affected, contact your congressional representative—the SALT cap is one of the most lobbied tax issues in Congress.

---

SALT Cap vs. Standard Deduction: Which Is Better for You?

Choosing between itemizing (with the SALT cap) and taking the standard deduction depends on your total deductible expenses. Here's a comparison:

Scenario	Total SALT	Mortgage Interest	Charitable	Total Itemized	Standard Deduction (2024)	Better Option
Single, no mortgage	$8,000	$0	$1,000	$9,000	$14,600	Standard
Single, $300K mortgage	$10,000	$12,000	$2,000	$24,000	$14,600	Itemize
Joint, no mortgage	$12,000	$0	$3,000	$15,000	$29,200	Standard
Joint, $500K mortgage	$10,000	$18,000	$5,000	$33,000	$29,200	Itemize
Joint, high SALT state	$10,000	$15,000	$10,000	$35,000	$29,200	Itemize
Senior (65+), low income	$6,000	$0	$2,000	$8,000	$16,550*	Standard

*Standard deduction for 65+ single filer: $16,550 (2024). Source: IRS Revenue Procedure 2023-34.

The break-even point: For a married couple filing jointly in 2024, you need at least $29,200 in total itemized deductions to beat the standard deduction. Since SALT is capped at $10,000, you need at least $19,200 in other deductions (mortgage interest + charity + medical) to make itemizing worthwhile.

Case Study: The Rodriguez Family, Chicago, IL

• Income: $180,000 (joint)
• Mortgage: $350,000 at 6.5% → $22,750 interest in Year 1
• Property tax: $7,500
• State income tax: $9,000
• Total SALT: $16,500 → capped at $10,000
• Charitable contributions: $4,000
• Total itemized: $10,000 (SALT) + $22,750 (mortgage) + $4,000 (charity) = $36,750
• Standard deduction: $29,200
• Better option: Itemize (saves $7,550 in deductions × 24% = $1,812 tax savings)

Actionable step today: Use the IRS's Interactive Tax Assistant tool at IRS.gov to determine whether you should itemize. Alternatively, run a "what-if" scenario in tax software like TurboTax or H&R Block.

---

How Do Workarounds Like Pass-Through Entity Taxes Work?

The Pass-Through Entity Tax (PTET) is the most significant workaround to the SALT cap, created in response to the TCJA. Here's how it works:

The Legal Framework

In 2018, several high-tax states (NY, CT, NJ) enacted laws allowing pass-through entities (S corps, partnerships, LLCs taxed as partnerships) to pay state income tax at the entity level rather than at the individual owner level. The IRS issued Notice 2020-75 in November 2020, confirming that entity-level state taxes are deductible as business expenses under Section 162, not subject to the $10,000 SALT cap.

How It Works Step-by-Step

1. Election: The entity elects to pay PTET by a state-specific deadline (usually March 15 of the tax year)
2. Payment: The entity pays state income tax on its taxable income at the entity level
3. Deduction: The entity deducts this payment on its federal tax return as a business expense
4. Credit: The owners receive a state tax credit equal to their share of the PTET paid
5. Net effect: Owners reduce their federal taxable income by the PTET amount while still satisfying their state tax liability

Example: New York PTET

Business: ABC Consulting, LLC (S corporation)

• Net income: $500,000
• Owners: Two equal partners (50% each)
• NY state income tax rate: 10.9% (top rate)
• Normal approach: Each owner pays $27,250 in NY tax → only $5,000 deductible each (capped)
• PTET approach: Entity pays $54,500 PTET → fully deductible on federal return
• Federal tax savings at 37%: $20,165 ($54,500 × 37%)
• Owners' state credit: $27,250 each → offset personal NY tax liability

States with PTET Laws (as of 2025)

State	PTET Rate	Eligible Entities	Deadline	Effective Date
New York	Same as individual rate (up to 10.9%)	S corps, partnerships	March 15	2021
California	9.3% (flat)	S corps, partnerships	June 15	2022
New Jersey	10.9% (flat)	S corps, partnerships, LLCs	March 15	2020
Connecticut	6.99% (flat)	S corps, partnerships	March 15	2018
Illinois	4.95%	S corps, partnerships	March 15	2021
Massachusetts	5.0%	S corps, partnerships	March 15	2022
Oregon	9.9%	S corps, partnerships	March 15	2023
Minnesota	9.85%	S corps, partnerships	March 15	2021
Virginia	5.75%	S corps, partnerships	March 15	2022
Maryland	5.75%	S corps, partnerships	March 15	2022

Source: AICPA State Tax Resource Center, 2025. 35 states total have PTET laws.

Limitations and Risks

1. Not available to W-2 employees or sole proprietors (Schedule C)
2. State-specific rules vary—some states require 100% of owners to consent
3. Double taxation risk if the state doesn't allow a full credit for PTET paid
4. Complexity requires professional tax preparation
5. Estimated tax payments must be made quarterly by the entity

Actionable step today: If you're a business owner with pass-through income, ask your CPA whether your state offers a PTET election. For 2025, the deadline is typically March 15, 2025 (for calendar-year entities). Don't wait—late elections may not be accepted.

---

Frequently Asked Questions

1. Can I deduct state and local taxes on my federal return if I take the standard deduction?

No. The SALT deduction is only available if you itemize deductions on Schedule A. If you take the standard deduction, you cannot claim any state or local tax deduction. For 2024, the standard deduction is $14,600 (single) or $29,200 (joint). If your total itemized deductions (including SALT, mortgage interest, charity) don't exceed these amounts, you're better off with the standard deduction.

2. Does the SALT cap apply to taxes paid on rental properties or business income?

No. The $10,000 cap only applies to personal state and local taxes reported on Schedule A. Taxes paid on rental properties (Schedule E), business expenses (Schedule C), or self-employment taxes are fully deductible as business expenses under Section 162. For example, if you own a rental property and pay $4,000 in property tax, that's deductible against rental income, not subject to SALT cap.

3. Can I deduct sales tax instead of state income tax under the SALT cap?

Yes. You can choose to deduct either state and local income taxes or state and local sales taxes (but not both). This is beneficial if you live in a state with no income tax (TX, FL, NV, WA, TN) or if your sales tax payments exceed your income tax payments. The IRS provides Optional Sales Tax Tables in Publication 600, or you can use actual receipts. The $10,000 cap applies to whichever you choose.

4. What happens to the SALT cap if I move to a different state during the year?

You combine taxes paid to all states during the year. For example, if you lived in California for 6 months (paid $6,000 in CA tax) and Texas for 6 months (paid $0 state income tax but $4,000 in property tax), your total SALT is $10,000. You can deduct the full $10,000. The cap is per tax return, not per state.

5. Is the SALT cap adjusted for inflation?

No. Unlike most tax provisions (standard deduction, tax brackets), the $10,000 SALT cap is not indexed for inflation. This means its real value has decreased significantly since 2018. In 2018 dollars, $10,000 had the purchasing power of approximately $12,400 in 2025 (using CPI-U). This effectively increases the tax burden on high-tax states each year.

6. Can I deduct property taxes on a second home or vacation home under the SALT cap?

Yes, but only for personal-use property (not rental property). Property taxes on a second home, vacation home, or timeshare are combined with your primary residence property taxes and state income taxes, all subject to the $10,000 cap. If you rent out the property, taxes on the rental portion are deductible as business expenses (not subject to cap).

7. How do I claim the SALT deduction on my tax return?

Use Form 1040, Schedule A (Itemized Deductions). Line 5a: State and local income taxes (from W-2 Box 17 or estimated payments). Line 5b: State and local sales taxes (if electing). Line 5c: Real estate taxes. Line 5d: Personal property taxes. Line 5e: Total (capped at $10,000). Transfer to Form 1040, Line 12. If you use tax software, it will automatically apply the cap.

---

Disclaimer

This article is for educational purposes only and does not constitute tax, legal, or financial advice. Tax laws are complex and subject to change. The SALT deduction cap, PTET workarounds, and legislative proposals discussed herein are based on laws and regulations as of June 2025. Individual circumstances vary significantly. You should consult with a qualified CPA, tax attorney, or enrolled agent before making any decisions regarding your tax strategy. The author, Michael Torres, CPA, is not responsible for any actions taken based on this information. Always verify current tax laws with the IRS or your tax professional, as penalties may apply for incorrect filings.

---

For more tax planning strategies, see our guides on Standard Deduction vs. Itemizing, Pass-Through Entity Tax Strategies, and High-Income Tax Planning for 2025.