Short Hills, NJ Property Taxes: The $26K Bill, the 2017 Time Capsule, and the 2029 Question

Millburn Township — Short Hills included; one municipality, one rate — carries a 2026 average residential bill of about $26,298: a 2.019% rate applied to an average assessment of roughly $1.30 million. The township collects for three budgets: its own operations, the school district (by far the largest component), and Essex County, whose share is set by equalized value — $45.3 million from Millburn in 2025, about 9.5% of everything the county collects. Every dollar of a bill this size above the SALT cap is paid with zero federal offset.

The structural fact buyers must internalize: assessments are frozen to a 2017 baseline — even renovations are “indexed back,” valued as if the improvements existed in 2017 — while market values have run far ahead. That gap makes the nominal rate misleading, makes the seller’s current bill a poor predictor of yours, and sets up the next county revaluation, expected around 2029, which will not raise the levy but will redistribute it — toward the properties whose appreciation the 2017 rolls have missed most. Model your bill at your purchase price, mind the April 1 appeal window, and read Chapter IV before your first quarter is due: this township accepts no postmarks and compounds its penalties.

Your bill funds three governments through one check. Millburn Township is the central collection point: it gathers what its own municipal operations require, what the school district requires — by far the largest component of the levy, funding the state’s most decorated district — and what Essex County requires of Millburn. The county piece has its own logic worth knowing: each municipality’s share is set by its slice of county-wide equalized value (a market-value adjustment that makes towns assessed in different years comparable), and Millburn’s 2025 contribution was $45.3 million — roughly 9.5% of everything Essex County collected, and actually down from $50 million in 2018 as other towns’ values grew faster.

The 2026 mechanics: a 2.019% rate on an average residential assessment of about $1,302,529 produces the $26,298 average bill — second nature to compare against the corridor: Summit averages $19,701 and Westfield $18,948, a gap our Westfield-versus-Short Hills analysis prices in full. And at this altitude the SALT cap is not a footnote: virtually the entire bill above the cap is paid with no federal deduction, a real-affordability dynamic the same math we ran for Westfield makes vivid — and it only intensifies at Millburn’s numbers.

Sources: Millburn per the Short Hills Association’s 2026 analysis (2.019% × avg. assessment $1,302,529); Summit and Westfield per 2026 Union County averages. Bills, not nominal rates, are the comparable figures — assessment baselines differ by county and revaluation year.

Essex County last revalued Millburn in 2017, and every assessment on the rolls speaks in 2017 dollars. The system even protects its own consistency in a way most buyers find surprising: when a home is renovated between revaluations, the added value is indexed back — assessed as if the improvements had existed in 2017 — so the renovated house stays comparable to its unrenovated neighbors on the same baseline. Individual assessments move between revaluations in only three cases: successful tax appeals, changes of use, and major improvements (on that indexed basis). None of these change the budgets; they only shift shares of the levy among properties.

Now the practical consequences. Because market values have grown well past the 2017 rolls, the nominal 2.019% rate overstates what owners pay as a share of true market value — effective rates on today’s prices land meaningfully lower, which is why headline “rate” comparisons across counties mislead. More importantly for a buyer: the seller’s bill reflects their 2017-era assessment, not your 2026 purchase price. On the estate product this market actually trades — browse the current Short Hills homes for sale and note how ordinary bills in the $40,000s are — the honest underwriting move is to model your carrying cost from the assessment and rate directly, stress-test it against your purchase price, and treat the listing sheet’s figure as the floor of the conversation, not the answer.

The next revaluation — expected around 2029, at the county tax board’s discretion — is the most misunderstood event on the horizon, so state the mechanics precisely. A revaluation does not raise taxes: the budgets set the levy, and the levy is what it is. What a revaluation does is re-measure every property at current market value and re-divide the existing levy accordingly. The arithmetic is zero-sum: properties whose values grew faster than the township average since 2017 will absorb a larger share afterward; properties that grew slower will absorb less; the property that grew exactly at the average sees roughly no change even as its assessment doubles.

For Short Hills specifically, the implication writes itself: the pockets with the strongest post-2017 appreciation — and the recent high-spec rebuilds whose indexed-back assessments most understate their market reality — are the natural candidates for above-average adjustment, while long-static properties may genuinely benefit. No one can pre-compute individual outcomes; equalization ratios and nine years of uneven appreciation will decide. But a buyer signing in 2026 should underwrite a bill at their purchase price under a market-value assessment, treat any interim savings from the 2017 rolls as a temporary spread, and view 2029 not as a threat but as the system doing, once a decade or so, what it claims to do continuously.

Millburn’s collector enforces the standard New Jersey quarterly calendar — February, May, August, and November 1 — with a 7-day grace period, and then the teeth: 8% interest on the first $1,500 delinquent and 18% on everything above, plus a 6% year-end penalty on parcels whose delinquency exceeds $10,000 at year end — a threshold a single missed quarter can cross at Short Hills bill sizes. Two rules that surprise newcomers: postmarks are not accepted (payment counts when received, and postal delays are your problem), and post-dated checks are returned. Prior-year balances go to the township’s annual tax sale. Budget one more line besides: the township bills a flat annual sewer usage fee, due April 1 with its own 7-day grace — a separate check many relocating buyers don’t expect.

Appeals: the county deadline is April 1; successful county-board appeals are credited to the fourth-quarter bill with the year’s earlier quarters revised. Appeals here are genuinely technical — you are arguing your 2017-baseline assessment against equalization ratios, not your market value against your neighbor’s Zestimate — so competent representation earns its fee. Relief: New Jersey’s stack — ANCHOR, the Senior Freeze, and Stay NJ, now filed through the combined PAS-1 application (due November 2, 2026 for the current cycle) — is income-tested at thresholds that exclude many working Short Hills households, but long-tenured owners and retirees should absolutely screen: at Millburn bill sizes, the programs’ benefits are far from trivial for those who qualify. The full segment-by-segment market picture these carrying costs plug into lives in our Short Hills market report.

“The most expensive sentence in a Short Hills purchase is “the taxes are on the listing sheet.” That number is the seller’s 2017 story. My job is to hand you yours: the bill at your price, the sewer line, the no-postmark rule, and what 2029 could do to all of it — before you sign, not after the first quarter surprises you.”

— Anthony Licciardello, Broker, The Prodigy Team

Every guide on this site is part of a system: town-by-town content clusters, dedicated neighborhood pages, and cross-state marketing engineered for one outcome — putting your listing in front of the motivated New York families already searching for it. I’m Anthony Licciardello, Broker of The Prodigy Team — a former Director of Community Affairs in the Bloomberg Administration and a member of the Staten Island Growth Management Task Force — and this pipeline is what 22 years and 5,000 closings taught me to build.

Our Above the Streets cinematic drone series extends that reach — aerial storytelling that markets entire towns, not just listings, with audience performance exceeding industry benchmarks for real estate media.

Anthony Licciardello · Broker, The Prodigy Team · 718-873-7345

Send us the listing — we’ll model the bill at your purchase price, flag the revaluation exposure honestly, and put the full carrying cost beside the corridor’s alternatives.

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What are property taxes in Short Hills, NJ?

Millburn Township’s 2026 average residential bill is about $26,298 — a 2.019% rate on an average assessment of roughly $1.30 million — with bills on estate product ordinarily reaching the $40,000s. The levy funds three budgets: the school district (the largest component), township operations, and Essex County ($45.3 million from Millburn in 2025, about 9.5% of county collections).

Why is my Short Hills tax assessment so much lower than my home’s value?

Because Essex County last revalued Millburn in 2017, and every assessment — including indexed-back renovation value — speaks in 2017 dollars. Market values have grown well past the rolls, which is why the nominal 2.019% rate overstates the effective rate on today’s prices, and why a seller’s current bill is a poor predictor of a buyer’s future one.

Will the ~2029 revaluation raise taxes in Short Hills?

Not by itself — budgets set the levy; a revaluation only re-measures every property at market value and re-divides the same levy. Properties that appreciated faster than the township average since 2017 will absorb a larger share; slower-appreciating ones less. Buyers should model their bill at their purchase price and treat savings from the 2017 rolls as a temporary spread.

When are Millburn property taxes due, and what are the penalties?

Quarterly on February, May, August, and November 1, with a 7-day grace period — then 8% interest on the first $1,500 delinquent and 18% above, plus a 6% year-end penalty on delinquencies over $10,000. Postmarks are not accepted and post-dated checks are returned. The annual flat sewer usage fee is separate, due April 1. Tax appeals are due April 1, with successful county appeals credited to the fourth quarter.

Moving to Short Hills, NJ: The Complete Guide
Westfield vs. Short Hills: The Million-Dollar Question
Westfield, NJ Property Taxes: Rates, Bills & What Buyers Pay