The $10,000 SALT deduction cap was a shock to many back in 2017. Now, with that limit set to expire at the end of 2025, the rules of the game are shifting again. You have a narrow window to adjust your strategy.
For high earners in high-tax states, this is the biggest story in personal finance right now. It is not just about federal returns. It is also about how states fought back with clever workarounds.
| Period | Deduction Rule | Key Impact on Taxpayers |
|---|---|---|
| Pre-2018 | Unlimited SALT deduction | Full relief for high state income and property taxes; itemizers in high-tax states benefited most |
| 2018–2025 | $10,000 cap ($5,000 for married filing separately) | Created a marriage penalty for joint filers; pushed many to the standard deduction |
| 2026 and beyond (if cap expires) | Reversion to unlimited deduction | Top earners regain significant write-offs; potential for large federal tax savings |
This timeline is crucial. If Congress does not act, the rule snaps back to the old unlimited deduction. That would mean a huge tax break for people in states like California, New York, and New Jersey.
The $10,000 cap is temporary. The biggest mistake is planning your 2024 or 2025 taxes as if these rules are permanent.
Pushing income into 2026 or pulling deductions into 2025 could be a winning move depending on what Congress does.
The State-Level Counterpunch: Pass-Through Entity Taxes
States did not just sit back and watch their residents suffer. Over 30 states created a workaround called the Pass-Through Entity Tax, or PTET. This lets business owners pay state taxes at the entity level instead of on their personal returns.
Why does this matter? The IRS said business entities can deduct those state taxes in full. There is no $10,000 cap on a business return. It is a legal end-run around the limit.
Imagine you own a small consulting firm. Normally, you pay $25,000 in state tax on your personal return but can only deduct $10,000.
With the PTET election, your firm pays the $25,000 and deducts the full amount as a business expense. You just saved federal tax on the extra $15,000.
| State | PTET Election Status | Who Qualifies |
|---|---|---|
| California | Active (9% tax rate for qualifying entities) | S corporations, partnerships, and LLCs taxed as such |
| New York | Active (optional for eligible entities) | S corporations and partnerships; must file by March 15 |
| New Jersey | Active (BAIT program) | Most pass-through entities; offers a refundable credit to owners |
| Texas | Not applicable (no personal income tax) | Focus is on franchise tax planning instead |
| Florida | Active (election starts 2024/2025) | Electing pass-through entities; careful credit mechanism applies |
You must check your state’s specific deadline. The election is usually due a few months into the tax year. Missing the deadline means losing the full deduction for that year.
Bunching: A Timing Game for Property Taxes
If your income is just above the standard deduction threshold, you have a powerful tool called bunching. It works best with property taxes. You pay two years’ worth of taxes in one year, and take the standard deduction in the next.
This gets you over the $10,000 hump every other year. It is a simple strategy, but it requires good records and a talk with your mortgage company if your taxes are escrowed.
Your property tax bill is $8,000 yearly. In December 2024, you pay the 2025 bill early. Your 2024 SALT deduction is now $16,000—letting you itemize and deduct the full $10,000.
In 2025, you pay nothing and take the standard deduction. Over two years, you maximized your write-offs.
| Filing Status & Income Range | Avg. SALT Paid | Best Strategy in 2024/2025 |
|---|---|---|
| Single, $80,000–$120,000 | $7,500 | Likely standard deduction; check medical or charitable add-ons |
| Married, $150,000–$250,000 | $12,000 | Consider bunching property taxes to exceed the cap every other year |
| Married, $400,000+ | $30,000+ | Pursue PTET aggressively; evaluate residency shifts for 2026 |
For middle-tier earners, the standard deduction often wins. You only want to itemize if your total deductions—including the capped SALT—sail past the standard amount with ease.
Paying extra interest or taxes just to itemize is a losing game. You never want to spend a dollar just to save twenty-five cents in tax.
The Big Decision: Residency and Location Planning
The expiration of the cap in 2025 makes residency audits more important. High earners are looking closely at Florida and Texas. But you must actually move.
States like New York and California are aggressive. They look at your phone records, your vet bills, and where your favorite painting hangs. A paper residency change will fail an audit.
You buy a condo in Florida and claim it is your primary home. But your kids stay in school in New Jersey, and your doctor is in Manhattan. The tax auditor will likely say you are still a New York resident.
The rule here is simple: your life must match your filing address.
| Total Income Bracket | Location | Impact if Cap Expires in 2026 |
|---|---|---|
| Top 1% ($800k+) | High-tax state (CA, NY) | Very positive: large deductions for state taxes return; significant federal tax reduction |
| Upper-middle (200k-400k) | High-tax metro suburbs | Positive: property tax relief becomes meaningful again for itemizers |
| Retirees with high assets | Low-tax state (NV, TX) | Neutral: no state income tax to deduct; focus remains on federal planning |
One more thing matters here: the Alternative Minimum Tax. Even without the cap, the AMT might limit how much SALT you can deduct. If you pay AMT regularly, do not count on a giant tax cut.
Congress may extend the cap, or alter it completely. Do not make irreversible moves, like selling a house, until the law is finalized.
Key Takeaways
| Key Point | What It Means | Action Item |
|---|---|---|
| The cap expires after 2025 | We will either return to unlimited deduction or face new rules | Model your 2026 taxes under both scenarios now; delay permanent decisions |
| PTET is a cash saver | Business owners can bypass the cap legally at the entity level | File the PTET election on time; late filings are often rejected |
| Bunching still works | Pushing two years of property tax into one year maximizes the cap | Check with your mortgage servicer about prepaying before December 31 |
| Residency audits are real | States look at the smallest details of your daily life | Keep a diary of your location; move your “center of gravity” genuinely |
| AMT can erase the benefit | The Alternative Minimum Tax often disregards state tax deductions | Run a projection to see if you are in AMT before celebrating the sunset |