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FIPS: 25025•Rank #12 National•Rank #1 in MA
Suffolk County, MA
Forward-Looking Municipal Debt, Assessment Lag & Carrying Cost Audit
Elevated Tax Drift Risk
96% Conf.
Tax Drift Index
67.4/ 100
Elevated Drift Risk
Suffolk County Executive Risk Briefing
MSRB EMMA Disclosures & US Census BureauAugust 2026
Suffolk County carries a Elevated Tax Drift Score (67.4/100) based on $9,200 in overlapping municipal debt per capita and a +23.5% CAD assessment lag spread. Projected 3-year millage escalation of +7.19% (+719 bps) indicates an estimated +$167,490/yr escrow adjustment on median-priced properties.
Median Home: $720,000Median Income: $86,000Effective Tax: 1.0%
Municipal Debt Per Capita
$9,200
10.7% of Median Income
CAD Valuation Lag
+23.5%
Assessed Value trailing Market HPI
3-Yr Millage Escalation
+719 bps
Effective Rate: 1.0% → 8.2%
Projected Annual Escrow Shock
+$167,490/yr
Estimated on median assessed home
Overlapping Taxing Jurisdictions & Debt Obligations
Breakdown of autonomous debt issuers assessing ad valorem property taxes on parcels within Suffolk County.
| Entity Name | Entity Type | Outstanding Bond Debt | Debt / Student or Cap | Adopted Millage |
|---|---|---|---|---|
| Boston Public Schools | ISD | $1.2B | $24,000 | 42.000% |
5-Year Historical Drift Score & Effective Rate Trajectory
2022
59
0.9% eff.
2023
62
0.9% eff.
2024
64
1.0% eff.
2025
66
1.0% eff.
2026
67.4
1.0% eff.
Statutory Constraint & Legislative Policy
City of Boston commercial classification shifts tax levy burden onto high-value office and lab towers.
Data Provenance & Audit Citations