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FIPS: 51107•Rank #87 National•Rank #2 in VA
Loudoun County, VA
Forward-Looking Municipal Debt, Assessment Lag & Carrying Cost Audit
Elevated Tax Drift Risk
96% Conf.
Tax Drift Index
52.5/ 100
Elevated Drift Risk
Loudoun County Executive Risk Briefing
MSRB EMMA Disclosures & US Census BureauAugust 2026
Loudoun County carries a Elevated Tax Drift Score (52.5/100) based on $8,900 in overlapping municipal debt per capita and a +23% CAD assessment lag spread. Projected 3-year millage escalation of +0.12% (+12 bps) indicates an estimated +$2,064/yr escrow adjustment on median-priced properties.
Median Home: $780,000Median Income: $170,000Effective Tax: 0.9%
Municipal Debt Per Capita
$8,900
5.2% of Median Income
CAD Valuation Lag
+23.0%
Assessed Value trailing Market HPI
3-Yr Millage Escalation
+12 bps
Effective Rate: 0.9% → 1.0%
Projected Annual Escrow Shock
+$2,064/yr
Estimated on median assessed home
Interactive Property Tax & Escrow Shock Simulator
Model forward-looking ad valorem tax obligations and monthly escrow adjustments for a specific parcel in Loudoun County, VA.
$780,000
$0
Current Annual Tax
$6,864
@ 0.88% eff. rate
Year 3 Projected Tax
$8,928
@ 1.00% eff. rate
Net Escrow Increase
+$2,064/yr
+$172/mo mortgage escrow
Projected Shock Attribution Breakdown+12 bps rate shift
1. Muni Bond Debt Service
+5 bps
I&S bond amortization
2. Operating Deficit Drift
+6 bps
M&O budget expansion
3. CAD Valuation Catch-up
+$1,026/yr
+$116,610 assessed base
Overlapping Taxing Jurisdictions & Debt Obligations
Breakdown of autonomous debt issuers assessing ad valorem property taxes on parcels within Loudoun County.
| Entity Name | Entity Type | Outstanding Bond Debt | Debt / Student or Cap | Adopted Millage |
|---|---|---|---|---|
| Loudoun County Public Schools | ISD | $1.9B | $22,000 | 0.490% |
5-Year Historical Drift Score & Effective Rate Trajectory
2022
46
0.8% eff.
2023
48
0.8% eff.
2024
50
0.9% eff.
2025
51
0.9% eff.
2026
52.5
0.9% eff.
Statutory Constraint & Legislative Policy
Data center capital tax revenues significantly subsidize residential property tax millages, stabilizing homeowner tax drift.
Data Provenance & Audit Citations