TaxDriftIndex
Predictive Civic Balance Sheet Intelligence

See Tomorrow’s Property Tax Bill Before It Arrives

TaxDrift tracks overlapping municipal bond debt, local government budget deficits, and county CAD assessment lag across US jurisdictions to forecast millage rate hikes 12–36 months in advance.

3,143
US Counties Monitored
$4.1T+
Municipal Bond Debt Tracked
13,000+
Independent School Districts (ISDs)
+28 bps
Avg 3-Yr High-Drift Millage Shock
Why Tax Drift Matters in Real Estate Underwriting
MSRB EMMA & US Census Bureau Government Finance AuditsAugust 2026

Standard real estate listings and closing disclosures only present trailing 12-month property tax statements. They conceal newly issued school district capital bonds, growing municipal operating deficits, and 20%+ assessment lag spreads. When county tax assessors catch up or debt service payments commence, property taxes escalate sharply, compressing net yields and inflating monthly escrow obligations.

Highest Property Tax Drift Jurisdictions

Counties facing the steepest forward-looking property tax reassessments and municipal debt service pressure.

View National 3,143-County Roster

High-Drift Municipal Risk Leaderboard

8 Jurisdictions Audited
RankJurisdictionDrift ScoreRisk TierMuni Debt / CapCAD Lag Spread3-Yr Tax ShockAudit
#1Cook County, IL86.4Severe$12,400+31.4%+$3,053/yrView
#2Philadelphia County, PA82.9High$9,800+25.0%+$1,379/yrView
#3New York County, NY81.3High$13,500+28.5%+$285,608/yrView
#4Kings County, NY78.2High$10,200+27.0%+$198,996/yrView
#5Miami-Dade County, FL77.8High$8,100+28.0%+$1,828/yrView
#6Essex County, NJ77.2High$10,400+24.5%+$3,802/yrView
#7Cuyahoga County, OH77.1High$8,600+24.5%+$1,732/yrView
#8Hays County, TX72.3High$8,950+25.2%+$2,546/yrView

Monitored State Municipal Profiles

Explore state-level tax drift dynamics, voter-approval rate caps, and overlapping taxing authority structures.

OhioOH
Avg Drift Score:69/100
Effective Tax Rate:2.1%
Tracked Debt:$26.6B
New YorkNY
Avg Drift Score:68/100
Effective Tax Rate:1.8%
Tracked Debt:$119.8B
PennsylvaniaPA
Avg Drift Score:67/100
Effective Tax Rate:1.8%
Tracked Debt:$32.2B
AlaskaAK
Avg Drift Score:65/100
Effective Tax Rate:1.1%
Tracked Debt:$3.3B
IllinoisIL
Avg Drift Score:64/100
Effective Tax Rate:2.4%
Tracked Debt:$91.3B
MinnesotaMN
Avg Drift Score:64/100
Effective Tax Rate:1.1%
Tracked Debt:$25.8B
MississippiMS
Avg Drift Score:64/100
Effective Tax Rate:1.1%
Tracked Debt:$13.2B
New JerseyNJ
Avg Drift Score:64/100
Effective Tax Rate:2.4%
Tracked Debt:$25.6B
TennesseeTN
Avg Drift Score:63/100
Effective Tax Rate:0.8%
Tracked Debt:$13.8B
WisconsinWI
Avg Drift Score:63/100
Effective Tax Rate:1.1%
Tracked Debt:$26.6B
FloridaFL
Avg Drift Score:62/100
Effective Tax Rate:1.1%
Tracked Debt:$95.3B
TexasTX
Avg Drift Score:62/100
Effective Tax Rate:2.1%
Tracked Debt:$153.9B
ColoradoCO
Avg Drift Score:61/100
Effective Tax Rate:0.6%
Tracked Debt:$15.0B
ConnecticutCT
Avg Drift Score:61/100
Effective Tax Rate:1.1%
Tracked Debt:$16.3B
NevadaNV
Avg Drift Score:61/100
Effective Tax Rate:0.7%
Tracked Debt:$18.9B
MontanaMT
Avg Drift Score:60/100
Effective Tax Rate:1.1%
Tracked Debt:$5.1B
New MexicoNM
Avg Drift Score:60/100
Effective Tax Rate:1.1%
Tracked Debt:$9.5B
IndianaIN
Avg Drift Score:59/100
Effective Tax Rate:1.1%
Tracked Debt:$30.9B
MassachusettsMA
Avg Drift Score:59/100
Effective Tax Rate:1.1%
Tracked Debt:$19.1B
North CarolinaNC
Avg Drift Score:59/100
Effective Tax Rate:1.0%
Tracked Debt:$24.2B
CaliforniaCA
Avg Drift Score:58/100
Effective Tax Rate:0.8%
Tracked Debt:$213.9B
GeorgiaGA
Avg Drift Score:58/100
Effective Tax Rate:1.1%
Tracked Debt:$26.7B
MarylandMD
Avg Drift Score:58/100
Effective Tax Rate:1.1%
Tracked Debt:$27.8B
OklahomaOK
Avg Drift Score:58/100
Effective Tax Rate:1.1%
Tracked Debt:$18.2B
UtahUT
Avg Drift Score:58/100
Effective Tax Rate:0.6%
Tracked Debt:$11.9B
South DakotaSD
Avg Drift Score:57/100
Effective Tax Rate:1.1%
Tracked Debt:$4.1B
WashingtonWA
Avg Drift Score:57/100
Effective Tax Rate:0.9%
Tracked Debt:$31.3B
ArizonaAZ
Avg Drift Score:55/100
Effective Tax Rate:0.8%
Tracked Debt:$35.4B
DelawareDE
Avg Drift Score:55/100
Effective Tax Rate:1.1%
Tracked Debt:$4.6B
LouisianaLA
Avg Drift Score:55/100
Effective Tax Rate:1.1%
Tracked Debt:$20.6B
ArkansasAR
Avg Drift Score:54/100
Effective Tax Rate:1.1%
Tracked Debt:$13.8B
HawaiiHI
Avg Drift Score:54/100
Effective Tax Rate:1.1%
Tracked Debt:$6.5B
KansasKS
Avg Drift Score:53/100
Effective Tax Rate:1.1%
Tracked Debt:$13.2B
North DakotaND
Avg Drift Score:53/100
Effective Tax Rate:1.1%
Tracked Debt:$3.5B
VermontVT
Avg Drift Score:53/100
Effective Tax Rate:1.1%
Tracked Debt:$2.9B
IdahoID
Avg Drift Score:52/100
Effective Tax Rate:1.1%
Tracked Debt:$8.8B
New HampshireNH
Avg Drift Score:52/100
Effective Tax Rate:1.1%
Tracked Debt:$6.3B
OregonOR
Avg Drift Score:52/100
Effective Tax Rate:1.1%
Tracked Debt:$19.1B
Rhode IslandRI
Avg Drift Score:52/100
Effective Tax Rate:1.1%
Tracked Debt:$4.9B
West VirginiaWV
Avg Drift Score:52/100
Effective Tax Rate:1.1%
Tracked Debt:$8.0B
KentuckyKY
Avg Drift Score:51/100
Effective Tax Rate:1.1%
Tracked Debt:$20.4B
MaineME
Avg Drift Score:51/100
Effective Tax Rate:1.1%
Tracked Debt:$6.3B
VirginiaVA
Avg Drift Score:51/100
Effective Tax Rate:1.0%
Tracked Debt:$16.1B
AlabamaAL
Avg Drift Score:50/100
Effective Tax Rate:1.1%
Tracked Debt:$23.0B
IowaIA
Avg Drift Score:50/100
Effective Tax Rate:1.1%
Tracked Debt:$14.4B
South CarolinaSC
Avg Drift Score:49/100
Effective Tax Rate:1.1%
Tracked Debt:$24.2B
WyomingWY
Avg Drift Score:49/100
Effective Tax Rate:1.1%
Tracked Debt:$2.6B
MichiganMI
Avg Drift Score:48/100
Effective Tax Rate:1.1%
Tracked Debt:$45.2B
MissouriMO
Avg Drift Score:48/100
Effective Tax Rate:1.1%
Tracked Debt:$27.9B
NebraskaNE
Avg Drift Score:48/100
Effective Tax Rate:1.1%
Tracked Debt:$8.9B

The TaxDrift Composite Formula & Data Layers

Layer 1 • 40% Weight

Debt Burden Velocity

Compiled from MSRB EMMA disclosures and Census Survey of Gov Finances. Evaluates total overlapping county, municipal, and special district (ISD, MUD, PID) bond debt per capita divided by median household income.

Layer 2 • 35% Weight

Assessment Lag Spread

Calculates the disparity between certified County Assessor (CAD) taxable valuations and FHFA House Price Index repeat-sales benchmarks. A widening gap signals an impending reassessment catch-up cycle.

Layer 3 • 25% Weight

Operating Deficit CAGR

Tracks 3-year compound annual growth rates of municipal operating expenditures relative to local tax revenue growth, highlighting structural deficits that will force statutory rollback rate increases.