Analysis by 
A New Jersey household with a $900,000 home pays roughly $20,000 a year in property tax before touching a mortgage, a utility bill, or a single repair. The same house in Honolulu would carry a bill near $2,700. That 7-to-1 spread is the single most underpriced variable in the cost of owning a high-value home, and for $150k+ households it now interacts with a federal deduction rule that changed in mid-2025 in ways most homeowners have not modeled.
The figure in this article’s title — $100k household budgets — understates who this hits. Property tax is regressive against income only up to a point; above it, the dollar burden scales with home value, and $150k+ buyers tend to own the homes where the effective tax rate compounds into five-figure annual obligations. This analysis works the math for that bracket specifically.
Scope: This article compares state-level effective tax rate figures for owner-occupied housing and models federal deduction value under rules effective for tax years 2025–2029. Effective rates are statewide averages from the Tax Foundation (2025–2026 data) and the Lincoln Institute of Land Policy (2024 tax year, published July 2025); actual bills depend on county and municipal millage, assessed value relative to market value, and local exemptions, and can vary widely within a single state. Dollar examples use round home values for clarity and are illustrative, not quotes for any specific parcel. Federal deduction modeling reflects the One Big Beautiful Bill Act (OBBBA) as enacted July 2025; figures may change with future legislation or the scheduled 2030 reversion. This is cost analysis, not tax or financial advice.
The numbers that define the burden
| Metric | Figure |
|---|---|
| National median effective tax rate | 1.08% |
| Highest state effective tax rate (New Jersey) | 2.23% |
| Lowest state effective tax rate (Hawaii) | 0.27% |
| SALT deduction cap, 2025 (most filers) | $40,000 |
| SALT cap above $600,000 MAGI | $10,000 |
Sources: Lincoln Institute of Land Policy / Tax Foundation (national median, baseline); Tax Foundation, 2025 effective rates by state; IRS / One Big Beautiful Bill Act, enacted July 2025.
What the effective tax rate actually buys you
The effective tax rate — annual tax paid as a percentage of market value — is the only figure that compares cleanly across markets, because mill rates and assessment ratios are not directly comparable state to state. New Jersey leads the nation at 2.23 percent on owner-occupied housing, followed by Illinois at 2.07 percent and Connecticut at 1.92 percent, according to Tax Foundation state rate rankings for 2025. Hawaii sits at the floor, 0.27 percent.
Translate that into dollars on a home a $150k+ buyer might actually own. At $900,000 of market value, New Jersey’s rate produces a bill near $20,070 a year. Drop the same house into Texas, where the Tax Foundation puts the owner-occupied effective rate at 1.40 percent, and the bill falls to about $12,600. Move it to Colorado or South Carolina, both well under 0.7 percent statewide, and it lands closer to $5,400. Same house. The tax line alone swings by more than $14,000 annually depending on the map pin.
| State | Effective tax rate | Annual property tax |
|---|---|---|
| New Jersey | 2.23% | $20,070 |
| Illinois | 2.07% | $18,630 |
| Connecticut | 1.92% | $17,280 |
| Texas | 1.40% | $12,600 |
| National median | 1.08% | $9,720 |
| Hawaii | 0.27% | $2,430 |
Effective rates: Tax Foundation, 2025 owner-occupied housing data, and Lincoln Institute of Land Policy (national median baseline, 2024 tax year). Dollar figures calculated as market value × effective tax rate.
One reconciliation note from the research: the Tax Foundation’s 2026 county-and-state map reports New Jersey at 2.11 percent using 2024 median home values, a touch below the 2.23 percent owner-occupied figure cited above. The gap reflects different base years and home-value denominators, not a contradiction. The honest read is a range of roughly 2.1 to 2.2 percent for New Jersey, and this article uses the higher owner-occupied figure to stay consistent with how the Tax Foundation reports rates for the $150k+ ownership tier.
Finluxy Property Tax Burden Index
Raw rates tell you the percentage. The Finluxy Property Tax Burden Index tells you how punishing a market is relative to the rest of the country. The index divides a market’s local effective tax rate by the national median of 1.08 percent. A reading of 1.0 means a homeowner pays exactly the national median rate; above 1.5 marks a high-tax market; below 0.5 marks a low-tax one.
| State | Effective tax rate | Finluxy Property Tax Burden Index |
|---|---|---|
| New Jersey | 2.23% | 2.06× |
| Illinois | 2.07% | 1.92× |
| Connecticut | 1.92% | 1.78× |
| Texas | 1.40% | 1.30× |
| National median | 1.08% | 1.00× |
| Hawaii | 0.27% | 0.25× |
Index = local effective tax rate ÷ 1.08% national median. Effective rates: Tax Foundation (2025) and Lincoln Institute of Land Policy (2024 baseline).
A New Jersey owner carries a Burden Index of 2.06× — more than double the national median, every year, indefinitely. Texas, despite its reputation as a high-tax state, registers 1.30×, firmly in elevated-but-not-extreme territory. The index reframes the relocation question: a household weighing New Jersey versus Texas property tax is not choosing between high and low. It is choosing between 2.06× and 1.30× — both above median, with Texas offsetting through the absence of a state income tax.
The deduction rule that just rewrote the math
For years, the standard advice to high-value homeowners in high-tax states was blunt: your property tax deduction is mostly worthless at the federal level. The Tax Cuts and Jobs Act capped the combined SALT deduction (state and local tax) at $10,000 starting in 2018, and a $20,000 property tax bill plus state income tax blew through that ceiling instantly. Every dollar of property tax above the cap delivered zero federal benefit.
That changed in July 2025. The One Big Beautiful Bill Act raised the SALT deduction cap from $10,000 to $40,000 for most filers, effective for tax year 2025 and scheduled to run through 2029 before reverting to $10,000 in 2030. The CNBC reporting on the change confirms the cap rises about 1 percent annually within that window. For a household that itemizes, that is up to $30,000 of newly deductible state and local tax — a material shift in the after-tax cost of living in a high-rate market.
The catch sits exactly where $150k+ households start clustering at the upper end. Per the enacted OBBBA text and Bipartisan Policy Center analysis, the $40,000 cap phases out once modified adjusted gross income (MAGI) exceeds $500,000, shrinking by 30 percent of income above that line, and floors back at $10,000 once MAGI passes $600,000. Tax planners have nicknamed the $500,000–$600,000 band the “SALT torpedo,” because each additional dollar of income in that range strips deduction value and produces an artificially high marginal rate. A household at $450,000 MAGI captures the full benefit. The same household at $650,000 is back to the old $10,000 world. The SALT cap impact on deduction value is no longer a flat rule — it is a cliff.
| MAGI band | Applicable SALT cap | Property tax deductible (after state income tax) |
|---|---|---|
| Under $500,000 | $40,000 | Most or all of the $20,000 |
| $500,000–$600,000 | Phasing $40,000 → $10,000 | Partial, declining sharply |
| Over $600,000 | $10,000 | Likely $0 above state income tax |
Source: One Big Beautiful Bill Act (enacted July 2025); IRS SALT deduction rules; Bipartisan Policy Center analysis, October 2025. Deductible amount depends on state income tax already consuming the cap.
The lever homeowners control: assessment
The effective tax rate is set by local government. The assessed value it is applied to is not always correct — and that is the one variable a homeowner can fight. Assessed value is the figure the assessor assigns for tax purposes; it is distinct from appraised or market value, though it is meant to track market value through a stated ratio. When the assessor’s number runs ahead of what the home would actually sell for, the owner overpays every year until it is corrected.
ATTOM Data Solutions and county-level analyses have long estimated that roughly a quarter of U.S. homes are over-assessed. Apply that to a high-value property and the stakes are concrete. A $900,000 home over-assessed by 10 percent — $90,000 of phantom value — carries about $1,800 a year in excess tax at New Jersey’s 2.23 percent rate. Over the average tenure in the home, that compounds into five figures of avoidable cost. The math of a successful property tax appeal is simply over-assessment multiplied by the effective tax rate: correct the $90,000 and recover the $1,800 annually.
The arithmetic favors high-rate markets. A $30,000 assessment reduction saves $246 a year at a 0.82 percent combined rate but $669 at New Jersey’s 2.23 percent. The higher the local rate, the more every dollar of assessment correction is worth — which is precisely why effective rates by county matter more than the headline state number when deciding whether to file. In Texas, the same process is legally termed a property tax protest rather than an appeal, with a hard county deadline (May 15 in 2026) after which the assessment locks for the year.
What most coverage misses
Nearly every property-tax comparison stops at the rate table: find the low-rate state, save money, done. The dataset says the interaction between the rate and the new SALT rules matters more than either figure alone — and it cuts against intuition. A household earning under $500,000 MAGI in high-rate New Jersey can now deduct up to $40,000 of combined state and local tax, recovering a real fraction of that 2.06× Burden Index at the federal level. A household earning over $600,000 in the same house gets nothing above $10,000 and eats the full 2.23 percent.
That means two neighbors in identical $900,000 homes, paying the identical $20,070 tax bill, now face materially different true costs purely because of where their income lands relative to $500,000 and $600,000. The property tax map didn’t create that gap. The 2025 deduction phase-out did. Coverage that treats property tax as a standalone line item — separate from the federal return — misses the variable that now does the most to determine what a high-earner actually pays.
What this means for a $150k+ household
Three thresholds now drive the decision. The first is the Burden Index of the target market: anything above 1.5× — New Jersey, Illinois, Connecticut — means property tax functions as a second mortgage payment that never amortizes, on the order of $15,000 to $20,000 a year on a high-value home, forever. The second is the $500,000 MAGI line, above which the restored SALT deduction begins evaporating, and the $600,000 line, above which it is effectively gone. A household straddling that band should run the numbers before assuming the bigger cap helps them; for many top earners in high-tax states, it does not.
The third lever is assessment, and it is the only one inside the homeowner’s control. On a $150k+ household’s typical home value, a single successful appeal correcting a 10 percent over-assessment can recover more annually than years of rate-shopping, and it compounds for as long as the correction holds. Before relocating to chase a lower rate — a decision that also forfeits the no-income-tax offset states like Texas and Florida provide — the cheaper first move is to verify the current assessment tracks market value and challenge it if it doesn’t. The relocation question, the income-timing question around the SALT torpedo, and the assessment question are genuinely different problems; a household above $500,000 MAGI in a 2× market should be working all three with a tax professional who can model the specific MAGI phase-out against the specific county rate, because the figures here are statewide averages and the decision is always local.
Frequently asked questions
Did the SALT deduction cap really increase to $40,000?
Yes, under the One Big Beautiful Bill Act enacted in July 2025. The cap rose from $10,000 to $40,000 for most filers for tax year 2025, rising roughly 1 percent annually through 2029, then scheduled to revert to $10,000 in 2030. It phases out for modified adjusted gross income above $500,000 and returns to $10,000 above $600,000.
What is the Finluxy Property Tax Burden Index?
It is a market’s local effective tax rate divided by the 1.08 percent national median. A reading of 1.0 equals the national median; New Jersey registers 2.06×, meaning its owners pay just over double the median rate. It standardizes high-tax versus low-tax comparisons into a single multiple.
Is challenging my assessment worth it on a high-value home?
Often, yes. ATTOM Data Solutions estimates roughly a quarter of homes are over-assessed. The annual saving equals the over-assessment multiplied by the effective tax rate, so a 10 percent over-assessment on a $900,000 home in a 2.23 percent market recovers about $1,800 a year, compounding until reassessment.
Does a low property tax state always cost less?
Not necessarily. States like Texas carry above-median rates (1.30× on the index) but no state income tax, which can offset the higher property tax for high earners. The full cost comparison requires modeling both taxes plus the SALT deduction together, not the property tax rate in isolation.
Methodology
Effective tax rate figures are drawn from primary sources prioritized for this analysis: the Tax Foundation’s 2025 and 2026 state property tax data for owner-occupied housing, and the Lincoln Institute of Land Policy’s 50-State Property Tax Comparison Study (2024 tax year, published July 2025). The national median effective rate of 1.08 percent serves as the Finluxy Property Tax Burden Index denominator. Where the Tax Foundation reports more than one figure for a state across different base years and home-value denominators — New Jersey appears at both 2.23 percent (owner-occupied) and 2.11 percent (2024 median-value map) — the range is noted and the owner-occupied figure used for consistency in the $150k+ ownership tier.
SALT deduction figures reflect the One Big Beautiful Bill Act as enacted in July 2025, cross-checked against IRS guidance and Bipartisan Policy Center analysis. Dollar examples apply the stated effective rate to round home values to isolate the tax variable; they are illustrative rather than quotes for any specific parcel. Over-assessment estimates reference ATTOM Data Solutions county-level data. Real estate agent-published rate comparisons and tourism-board claims were excluded per source-quality standards. I verified every rate, cap, and threshold in this article against a current primary source before publication rather than from prior figures, because the SALT rules in particular changed materially in mid-2025.
Sources & References
- Tax Foundation — Property Taxes by State and County, 2025–2026 effective rate data
- Lincoln Institute of Land Policy — 50-State Property Tax Comparison Study, 2024 tax year
- Bipartisan Policy Center — SALT deduction changes under the One Big Beautiful Bill Act
- CNBC — SALT deduction cap increase and MAGI phase-out for 2025
- Tax Foundation — Texas effective property tax rate on owner-occupied housing