You've heard the chatter about SALT and deduction caps. But buried in the fine print of Trump’s 2026 property tax proposal are three subtle shifts that could hit your wallet harder than you think. Here’s what even the tax-savvy homeowner might overlook — and how to prepare now.
Everyone focuses on the state and local tax (SALT) deduction limit. But the 2026 blueprint also tweaks how property taxes are deducted for second homes and investment properties. If you own a cabin or a rental, the new "stacking" rule could reduce your write‑off by nearly 20%.
And here’s the kicker: the phase‑out threshold for itemized deductions drops from $400,000 to $300,000 (single filers). That means more upper‑middle‑class homeowners will hit the phase‑out without realizing it. Check your property’s current value—if it’s appreciated fast, you might be closer than you think.
A sleeper clause: the “Truth in Assessments Act” would cap annual increases in taxable value at 5% for primary residences, but with a catch. The cap resets when you sell. So if you’ve owned your home for 15 years, your tax bill could jump 30% the year after you move.
That’s a massive hidden cost for empty‑nesters planning to downsize. And because the cap is tied to the property, not the owner, inherited homes also face a stepped‑up basis—and a stepped‑up tax bill.
Curious how your state’s average lot size compares? See how many square feet in an acre to visualize typical property dimensions.
The plan extends the $10,000 SALT cap through 2030, but quietly sunsets the “senior freeze” exemption in 2027. After that, seniors over 65 would lose the ability to cap their property taxes at the rate when they turned 60. For a retiree in a hot market, that could mean a 40% increase over three years.
| Provision | Current (2025) | Proposed (2026) |
|---|---|---|
| SALT deduction cap | $10,000 (all taxes) | $10,000 (but property taxes only; state income no longer deductible) |
| Primary residence assessment cap | None (state dependent) | 5% annual increase limit, resets on sale |
| Second home property tax deduction | Fully deductible up to SALT cap | Only 50% of property taxes deductible, subject to separate $5,000 cap |
| Senior exemption freeze | Available in 35 states, no federal sunset | Federal sunset after 2027; states must comply or lose highway funding |
Most homeowners miss the “uniformity clause” that requires all jurisdictions to use the same assessment method—no more fractional assessments for different neighborhoods. That sounds fair, but in practice, it often raises values in previously under‑assessed areas. If your county used 80% of market value while a neighboring county used 100%, expect a one‑time revaluation bump.
The Johnsons bought a home in 2015 for $300,000. In 2025, it’s worth $650,000. Under current rules, their property tax is based on a 90% assessment ($585,000). The 2026 plan reassesses at 100% market value, adds the 5% cap reset because they plan to sell in 2028, and they lose the senior freeze (Mr. Johnson turns 66 in 2027). Their property tax could jump from $7,800 to nearly $11,500—a 47% increase. They didn’t see it coming because they focused only on the SALT cap.
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