SALT Tax Deduction 2026: $10K Cap, Mortgage Interest Limits & How to Save Thousands
The $10,000 SALT cap is still crushing homeowners in high-tax states. Here are 6 legal strategies to save $2,000-$12,000 on your taxes — plus everything you need to know about the 2026 mortgage interest deduction limits.
Quick Answer: What is the SALT Deduction in 2026?
The SALT (State and Local Tax) deduction lets you deduct state income taxes, local property taxes, and sales taxes from your federal taxable income — but it is capped at $10,000 ($5,000 for married filing separately). This cap was established by the Tax Cuts and Jobs Act (TCJA) in 2017 and remains in effect for 2026. The mortgage interest deduction is separate — you can deduct interest on up to $750,000 of mortgage debt.
What is the SALT Deduction Cap in 2026?
The SALT deduction allows you to deduct three types of state and local taxes from your federal income:
State Income Tax
What you pay to your state government. Top states: CA (13.3%), NY (10.9%), NJ (10.75%).
Local Property Tax
Annual tax on your home. National avg: $3,901. NJ avg: $9,527, IL avg: $5,112.
Sales Tax (alternative)
You can choose sales tax instead of income tax. Best for states with no income tax (TX, FL, WA).
The $10,000 Cap: Why It Hurts Homeowners
Before 2018, there was no limit on the SALT deduction. A homeowner in New Jersey paying $12,000 in property tax + $8,000 in state income tax could deduct the full $20,000.
Now with the $10,000 cap: That same homeowner can only deduct $10,000 — losing $10,000 in deductions. At a 32% tax bracket, that's $3,200 more in federal taxes every year.
| Scenario | Before TCJA | After TCJA (2026) | Lost Deduction | Extra Tax (32%) |
|---|---|---|---|---|
| NJ homeowner ($12K prop + $8K state) | $20,000 | $10,000 | $10,000 | $3,200/yr |
| CA homeowner ($9K prop + $13K state) | $22,000 | $10,000 | $12,000 | $3,840/yr |
| NY homeowner ($10K prop + $9K state) | $19,000 | $10,000 | $9,000 | $2,880/yr |
| TX homeowner ($7K prop + $0 state) | $7,000 | $7,000 | $0 | $0 |
Mortgage Interest Limitation 2026: What You Can Deduct
The mortgage interest deduction is separate from the SALT cap — and it is one of the biggest tax advantages of homeownership. Here are the current limits:
Mortgages After Dec 15, 2017
- • Limit: $750,000 of mortgage debt
- • MFJ: $750,000 combined
- • MFS: $375,000 each
- • Example: $500K mortgage at 6.5% = ~$32,000 interest deduction in year 1
Mortgages Before Dec 15, 2017
- • Limit: $1,000,000 of mortgage debt
- • Grandfathered: Keeps old limit until you refinance
- • Refinance rule: New loan can't exceed old balance
- • Example: $800K mortgage at 5.5% = ~$43,000 interest deduction
Home Equity Loan Interest: Special Rules
Home equity loan and HELOC interest is deductible only if the funds are used for home improvements (buy, build, or substantially improve your home). Using HELOC for debt consolidation, vacation, or college? That interest is NOT deductible. The combined mortgage + HELOC debt must stay under $750K. Compare HELOC rates →
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Get My Rate Quote →10 States Most Affected by the SALT Cap
If you live in a high-tax state, the SALT cap costs you thousands every year. Here are the top 10 most impacted states:
| # | State | Avg SALT Deduction | Lost to Cap | Extra Tax (32%) | Avg Property Tax |
|---|---|---|---|---|---|
| 1 | New York | $22,169 | $12,169 | $3,894/yr | $8,553 |
| 2 | Connecticut | $19,665 | $9,665 | $3,093/yr | $7,925 |
| 3 | New Jersey | $18,981 | $8,981 | $2,874/yr | $9,527 |
| 4 | California | $18,438 | $8,438 | $2,700/yr | $5,946 |
| 5 | Massachusetts | $14,760 | $4,760 | $1,523/yr | $6,374 |
| 6 | Maryland | $13,411 | $3,411 | $1,092/yr | $4,459 |
| 7 | Illinois | $12,254 | $2,254 | $721/yr | $5,112 |
| 8 | Oregon | $11,890 | $1,890 | $605/yr | $3,479 |
| 9 | Minnesota | $11,570 | $1,570 | $502/yr | $3,167 |
| 10 | Virginia | $10,910 | $910 | $291/yr | $3,327 |
6 Legal Strategies to Save Thousands Despite the SALT Cap
Prepay or Defer Property Taxes Strategically
If you expect lower income next year, defer property tax payments. If you expect higher income, prepay before Dec 31. Important: You cannot prepay STATE INCOME taxes beyond current year estimates — only property taxes.
Potential Savings: $500-$2,000/yearMaximize Mortgage Interest Deduction Instead
Since SALT is capped at $10K, shift your tax strategy to maximize the UNLIMITED mortgage interest deduction. Consider a larger mortgage if the math works — interest is fully deductible on up to $750K.
Potential Savings: $1,000-$5,000/yearUse HELOC for Home Improvements (Tax-Deductible)
HELOC interest used for home improvements is deductible ON TOP of the SALT cap. A $100K HELOC at 8% = $8,000 additional deduction. At 32% bracket = $2,560 tax savings.
Potential Savings: $1,000-$3,000/yearConsider Refinancing to a Higher Deductible Structure
If you have a low mortgage balance, refinancing or taking a cash-out refi for home improvements can increase your deductible interest. This offsets the lost SALT deduction.
Potential Savings: $1,000-$4,000/yearCharitable Donations + Donor-Advised Fund
Bunch 2-3 years of charitable donations into one year using a donor-advised fund. This pushes you above the standard deduction threshold, making your SALT + mortgage interest also deductible.
Potential Savings: $2,000-$8,000/yearS-Corp / Pass-Through Entity Tax Workaround
Many states now offer pass-through entity tax (PTET) elections that allow business owners to deduct state taxes at the entity level — bypassing the $10K SALT cap entirely. Available in 36+ states.
Potential Savings: $3,000-$12,000+/yearPro Tip: Combining strategies #2 + #3 + #5 can recover $4,000-$16,000+ in lost deductions. Compare refinance rates today → to see if restructuring your mortgage makes sense.
Should You Itemize or Take the Standard Deduction in 2026?
2026 Standard Deduction Amounts:
Quick Itemize Test:
Add these up:
- ✅ Mortgage interest (check Form 1098): $_____
- ✅ SALT cap ($10,000 max): $_____
- ✅ Charitable donations: $_____
- ✅ Medical expenses (above 7.5% AGI): $_____
If your total exceeds the standard deduction for your filing status → ITEMIZE!
SALT Cap 2026: What Congress Is Debating
Several proposals are being considered to modify the SALT cap. Here is where things stand as of April 2026:
Raise Cap to $80,000
House Proposal
Raise Cap to $20,000/$40,000
Senate Discussion
Eliminate Cap Entirely
Progressive Push
Keep $10,000 Cap
Current Law
Note: These are estimates based on current legislative activity. Tax laws can change quickly. Consult a tax professional for personalized advice.
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