The New SALT Cap Phasedown: What High-Income DFW Families Should Know (Even in a No-Income-Tax State)

 

Key Points:

• The OBBBA raised the federal SALT deduction cap from $10,000 to $40,000 for tax years 2025–2029, but the expanded cap phases down for households with MAGI above $500,000.
• For every dollar of income above $500,000, the cap is reduced by $0.30. At $600,000 MAGI, the cap returns to $10,000 — as if the OBBBA never happened.
• Texas has no state income tax, but DFW property taxes alone are large enough to push many households into the phasedown zone and above the $40,000 cap.
• A home valued at $1.2 million in a typical DFW community can generate $18,000–$28,000+ in annual property taxes depending on location and school district.
• Business owners whose pass-through entities have income from other states may benefit from pass-through entity tax (PTET) elections that preserve deductibility outside the SALT cap.
• Maximizing pre-tax retirement contributions to reduce MAGI is one of the most effective tools for W-2 earners inside the phasedown band.
• The expanded SALT cap expires entirely in 2030. Planning decisions made now — including home purchases and business structure — should account for that reversion.

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SALT — State And Local Taxes — refers to the combined total of property taxes, state income taxes, and local income taxes you can deduct on your federal return when you itemize. Before 2018, this deduction was unlimited. The Tax Cuts and Jobs Act of 2017 capped it at $10,000, and the headlines went almost entirely to residents of California, New York, New Jersey, and Illinois — states where six-figure earners were paying $30,000 or more per year in state income taxes alone.

Texas residents largely shrugged. With no state income tax, the only form of SALT available to most Texas households is property taxes, and for years, a $10,000 cap was easy enough to live with when the typical DFW property tax bill was $7,000 or $8,000.

But the One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025, has placed many higher-income Texas residents in a deduction phasedown zone that many are unaware of.

Here’s what changed, what the math looks like for a family in this market, and what planning strategies your financial team should be discussing right now.

DFW Property Taxes Have Changed the Equation

Property taxes in the Dallas-Fort Worth area are levied as a stacked rate across multiple jurisdictions: the city, the county, any relevant community college district, and — most significantly — the school district. The school district portion alone typically accounts for more than half of a homeowner’s total tax bill.

Effective combined rates across the metro vary meaningfully by location and school district, but many established DFW communities carry combined rates in the range of 1.7% to 2.6% of assessed value. Apply those rates to homes that have appreciated substantially, and the results are significant.

A home appraised at $900,000 with a 2.0% effective combined rate generates approximately $18,000 in annual property taxes. At 2.5%, that same home produces $22,500. A $1.3 million home at 2.2% is looking at roughly $28,600 per year.

For a Texas household with no state income tax, that property tax figure is their entire SALT exposure. And at $18,000, $22,500, or $28,600, they are well above the old $10,000 cap — and depending on their income, potentially constrained under the new $40,000 cap and its phasedown provisions as well.

What the OBBBA Actually Changed — and What the Phasedown Means

The One Big Beautiful Bill Act raised the SALT deduction cap from $10,000 to $40,000 for tax years 2025 through 2029. The cap increases by 1% per year through 2029, then reverts entirely to $10,000 in 2030.

For households under the income threshold, this is meaningful relief — particularly for Texans with large property tax bills who were previously capped at $10,000 regardless of what they actually paid. A household paying $28,000 in property taxes and earning $450,000 now gets to deduct the full amount. That’s a $18,000 increase in deductions compared to prior law.

But the OBBBA paired that expanded cap with an income-based phasedown that claws back the benefit for households earning above $500,000 in Modified Adjusted Gross Income (MAGI). The phasedown is steep and its mechanics deserve careful attention.

How the Phasedown Formula Works

For every dollar of MAGI above $500,000, the $40,000 SALT cap is reduced by $0.30. The cap cannot fall below $10,000 regardless of income.

The formula: Available SALT Cap = $40,000 − [30% × (MAGI − $500,000)]

At $520,000 MAGI, the cap is reduced to $34,000. At $550,000 MAGI, the cap falls to $25,000. At $575,000 MAGI, the cap is $17,500. At $600,000 MAGI, the phasedown is complete — the cap is back to $10,000.

The entire $30,000 of expanded deductibility disappears across just $100,000 of income. For a household earning $550,000, half the OBBBA’s SALT benefit is already gone. At $600,000 or above, the law changed nothing for them at the individual level.

The Hidden Marginal Rate Problem

This is the detail that most coverage misses. Inside the $500,000–$600,000 income band, every additional $10,000 of earned income doesn’t simply trigger tax at your bracket rate. It also reduces your SALT deduction by $3,000 — creating $3,000 of additional taxable income at the same time.

For a married household in the 35% federal bracket with property taxes large enough to be capped:

• Normal 35% marginal rate: $3,500 in tax per $10,000 of income
• SALT cap reduces $3,000 per $10,000 of income: +$1,050 in additional tax
• Effective marginal rate inside the phasedown band: approximately 45.5%

This isn’t a bracket — it’s an effective rate created by the deduction phasedown interacting with regular income tax brackets. It applies specifically when your property taxes exceed your available SALT cap. For households in this range, every dollar of additional income is more expensive than it appears on a standard rate schedule.

The 2030 Cliff — and Why It Matters Now

The expanded SALT cap is not permanent. In 2030, it reverts to $10,000 for all filers regardless of income, with no phasedown — just a hard reset.

The cap indexes annually through 2029: $40,000 in 2025, approximately $40,400 in 2026, roughly $40,804 in 2027, and so on. The phasedown threshold also adjusts by 1% per year, so the band shifts slightly upward each year. But the fundamental structure — a cap, a phasedown band, and a $10,000 floor — remains in place until it expires.

This has direct implications for households making long-term decisions now. A home purchase that generates a $25,000 annual property tax bill looks different in 2025–2029 than it will in 2030, when the full $25,000 will once again be capped at $10,000. Build that into your analysis.

What This Looks Like for Two DFW Households

A W-2 Household Earning $580,000

A two-income professional household files jointly, reporting $580,000 in combined W-2 income. They own a home in a mid-tier DFW neighborhood appraised at $1.1 million, with a combined effective property tax rate of approximately 2.0%. Their estimated annual property tax bill: $22,000.

MAGI: $580,000 Excess above $500,000 threshold: $80,000 SALT cap reduction (30% × $80,000): $24,000 Available SALT cap: $16,000 Property taxes actually deductible: $16,000 Property taxes paid but not deductible: $6,000

At the 35% federal bracket, the $6,000 in non-deductible property taxes represents approximately $2,100 in additional federal tax compared to a household below the phasedown threshold paying the same property taxes.

The OBBBA does help this household compared to the old $10,000 cap — they now deduct $16,000 instead of $10,000. But any bonus, equity compensation, or investment income that pushes their MAGI closer to $600,000 will erode that benefit further. And they are already absorbing the elevated effective marginal rate described above.

A Business Owner Earning $750,000

A business owner operates an S-corporation that generates pass-through income. After applicable deductions, their total MAGI is $750,000. They own a home appraised at $1.4 million in a higher-tax area of the metroplex with a combined effective rate near 2.3%. Estimated annual property taxes: $32,200.

MAGI: $750,000 Excess above $500,000 threshold: $250,000 SALT cap reduction (30% × $250,000): $75,000 Available SALT cap (floor applies): $10,000 Property taxes actually deductible: $10,000 Property taxes paid but not deductible: $22,200

At the 37% federal bracket, the $22,200 in non-deductible property taxes costs this household approximately $8,214 per year in additional federal tax — a real and recurring expense with no individual-level relief under the OBBBA.

For this individual, the planning conversation shifts entirely to strategies that either reduce MAGI meaningfully or restructure how state-related taxes are paid — which is where the strategies below apply.

Planning Strategies for High-Income DFW Households

Maximize Pre-Tax Retirement Contributions to Reduce MAGI

This is the cleanest tool for W-2 earners inside or approaching the phasedown band. Every dollar shifted into a pre-tax retirement vehicle reduces both your direct tax at the bracket rate and the phasedown erosion of your SALT cap.

Inside the phasedown band, a $10,000 pre-tax 401(k) contribution by a married household in the 35% bracket does two things simultaneously: it saves $3,500 in direct federal income tax, and it preserves $3,000 of SALT deductibility — worth an additional $1,050 at the 35% rate. The combined estimated benefit is approximately $4,550 per $10,000 contributed.

For 2025, 401(k) contribution limits are $23,500, or $31,000 for those age 50 and older. Business owners have additional options: defined benefit pension plans, SEP-IRAs, and solo 401(k)s can accommodate substantially larger pre-tax contributions and may allow MAGI to drop below the phasedown threshold entirely.

Health Savings Accounts and certain deferred compensation arrangements for eligible executives can contribute meaningfully as well. The key insight is that any dollar that reduces MAGI below $600,000 — and especially below $500,000 — has compounding value in the phasedown zone.

These figures are illustrative. The actual benefit depends on your specific MAGI, filing status, deduction profile, and tax situation. Work with your tax professional before making contribution decisions.

Pass-Through Entity Tax (PTET) Elections for Business Owners

This is the most powerful tool available to business owners with multi-state exposure — and one that Texas residents often dismiss without fully analyzing their situation.

Texas has no personal income tax. For a business that operates entirely within Texas, there is no state income tax to pay at any level, which means the traditional PTET rationale — deducting state income taxes at the entity level rather than the individual level — does not apply.

But here is the Texas-specific scenario that does apply: a Texas-based S-corporation or partnership that generates revenue from clients, employees, or operations in states with income taxes. If your business has nexus in California, New York, Illinois, or other income-tax states, your entity is likely already paying income tax to those states on the income sourced there. Under the OBBBA as enacted, the PTET workaround was preserved — state income taxes paid at the entity level remain deductible as a business expense and do not count against the individual SALT cap.

For a Texas business owner whose entity pays $40,000 in California or New York state income taxes on out-of-state revenue, keeping that payment at the entity level preserves the full deduction. Running it through the individual return would subject it to the SALT cap — potentially reducing or eliminating the deduction entirely depending on MAGI.

The election is made at the entity level and requires careful coordination among all owners. This analysis is highly fact-specific, and the mechanics vary by state. A CPA experienced in multi-state taxation is essential before electing any PTET regime.

Bunch Charitable Giving Through a Donor-Advised Fund

For households fully phased out of SALT benefits — particularly those at $600,000 and above — charitable giving through a Donor-Advised Fund can serve as both a meaningful philanthropic vehicle and a MAGI management tool.

A DAF allows you to make a large, tax-deductible contribution in a single year — receiving the full federal deduction immediately — while distributing grants to your chosen charities over multiple years. For a household bunching three to five years of annual giving into a single DAF contribution, the deduction in the contribution year may be large enough to exceed the standard deduction and partially offset the lost SALT benefit.

For clients age 70½ or older with IRA assets, Qualified Charitable Distributions (QCDs) offer a distinct and powerful option. QCDs allow up to $111,000 per year (2026 limit) to be directed from an IRA directly to a qualifying charity. QCDs are excluded from MAGI entirely — meaning they do not count toward the SALT phasedown threshold. For a client on the margin of the phasedown band, a well-timed QCD can meaningfully reduce the cap erosion.

Protest Your Property Tax Appraisal — Every Year

This is the most underutilized strategy in the DFW market. It is also one of the most direct: a successful appraisal protest reduces the property taxes you actually pay, which means less SALT exposure to begin with.

Texas homeowners can protest their appraised value annually through the applicable Appraisal Review Board. For homesteaded properties, the 10% cap on annual assessment increases provides a baseline of protection. But newly purchased properties, non-homesteaded parcels, and any property where the market shifted downward are candidates for protest.

A successful protest that reduces assessed value by $75,000 on a $1.2 million home saves approximately $1,500 to $1,875 per year in property taxes, depending on the combined effective rate. That is SALT that never appears on your return because it was never paid. Over a five-year window, a consistent protest strategy compounds. It pairs naturally with the deduction planning above: reducing actual property taxes reduces both your annual expense and the amount being capped or lost to the phasedown.

Evaluate Mortgage Debt Structure Before 2030

The OBBBA also made permanent the TCJA limit on home mortgage interest deductibility: interest is deductible only on up to $750,000 of home acquisition debt. For households purchasing or refinancing homes in the $1 million-plus range common across DFW’s established neighborhoods, a portion of mortgage interest is already non-deductible.

With both the SALT cap phasedown and the mortgage interest ceiling potentially limiting Schedule A deductions simultaneously, some households near or above the $500,000 MAGI threshold may find that itemizing provides limited benefit over the standard deduction ($31,500 for married filing jointly in 2025). When that is true, above-the-line deductions — retirement contributions, HSA contributions, the QBI deduction for business owners — become relatively more valuable, and the framing of your entire deduction strategy shifts.

The 2030 reversion also matters here. A household purchasing a $1.5 million home in 2026 should model their expected property tax burden not only under the current law but also under the post-2029 environment, when the full property tax bill will once again be capped at $10,000 for individual deduction purposes.

The Questions That Should Guide Your Planning

Before your next advisor conversation, it is worth working through these:

Where does your MAGI fall in relation to the $500,000–$600,000 phasedown band? If you are inside it, the phasedown creates an effective marginal rate of approximately 45.5% on income in that range — worth addressing proactively with retirement contribution strategies.

What is your actual annual property tax bill? The starting point for this entire analysis is knowing your number. If your property taxes exceed $40,000, you have a cap issue regardless of income. If they fall between $10,000 and $40,000, the phasedown determines how much you can deduct.

Does your business generate income in states with income taxes? Multi-state nexus creates a PTET opportunity that many Texas business owners are leaving on the table.

Are you maximizing pre-tax contributions across all available vehicles? The quantifiable return to doing so is higher inside the phasedown band than it appears on a standard contribution analysis.

Are you planning for 2030? The SALT cap reverts hard to $10,000 in 2030. Major decisions made between now and then — home purchases, refinancing, business expansion — should be modeled under both the current law and the post-2029 environment.

The Bottom Line

The SALT cap conversation has always been framed as a high-income-tax-state problem. That framing has caused many DFW families to tune it out — and miss the fact that property taxes alone are large enough in this market to make the OBBBA’s phasedown directly relevant to them.

A household earning $560,000 in Dallas is not living in New York. But their property tax bill may be putting them in nearly the same deduction-constrained position as a comparable earner in a high-income-tax state — with less public awareness that the problem applies to them at all.

The planning tools are available. Retirement contributions, PTET elections for qualifying business owners, charitable giving strategies, and consistent appraisal protests can each reduce the real cost of this constraint. The window to take advantage of the expanded cap — even in its phased-down form — runs through 2029. The right time to build a strategy is now, while you have time to act rather than react.

Every situation is different, and no article substitutes for working through your actual numbers with a qualified advisor and tax professional.

Carter Wealth advisors work with high-income DFW families to build tax-aware financial plans that account for changes like the OBBBA. If you’d like to understand how these provisions interact with your specific income, property, and business structure, contact us to schedule a conversation.

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This content was created with the assistance of artificial intelligence (AI). While efforts have been made to ensure the quality and reliability of the content, it is important to note that AI-generated content may not always reflect the most current developments or nuanced human perspectives.

The information has been obtained from sources considered to be reliable, but we do not guarantee that the foregoing material is accurate or complete. Any opinions are those of Deborah Hickey, CFP® and not necessarily those of Raymond James. Expressions of opinion are as of this date and are subject to change without notice. There is no guarantee that these statements, opinions or forecasts provided herein will prove to be correct. Raymond James and its advisors do not offer tax or legal advice. You should discuss any tax or legal matters with the appropriate professional.

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