The posted mill rate next to the equalized rate that can actually be compared across towns.
Picking a town highlights it in every chart and table on this page, and the highlight follows you to the other ranking pages. Clear the box to remove it.
Every town's total tax levy per $1,000 of the market value of all its taxable property, for —. Sorted lowest to highest; rank 1 is the lowest rate, which is a description of the rate, not a grade of the town. Bars are shaded by quarter of the ranking.
Source: computed as total tax levy (CT OPM he33-brru) divided by the equalized net grand list (CT OPM 8rr8-a322), both from data.ct.gov; payload ct_equalized_rates.json, which lists every screened or substituted levy cell in its metadata. This levy-based rate runs about 1% above OPM's own published equalized rate (which divides collections, not billings); every town gets the same method in the same year.
The rate each town actually posts for —, ranked the same way. This ordering mixes tax decisions with revaluation timing — it is shown because it is the number residents see on their bills, not because it compares towns fairly. The tooltip shows each town's equalized rank beside its nominal rank; a large gap between the two usually means the town is early or late in its revaluation cycle.
Source: CT OPM Mill Rates (emyx-j53e) via ct_mill_rates.json. Real-estate/personal-property rate; the motor-vehicle rate is capped by statute and differs in towns above the cap.
All 169 towns with both rates. “Nominal ÷ equalized” is a rough staleness signal: the higher it is, the further the town's assessments sit below current market value.
Equalized rate = (total tax levy for the fiscal year) ÷ (equalized net grand list) × 1,000. The equalized net grand list is OPM's estimate of the market value of all taxable property in the town, built from actual sales ratios by property class. The levy for a fiscal year is laid against the grand list dated October 1 two years earlier; the mapping was verified against OPM's audited indicators file, where it matches exactly.
What it is not: this divides billings, where OPM's own published equalized mill rate (audited series, ending FY 2022-23) divides collections — the two differ by roughly each town's collection rate, about 1% for most towns. A handful of consolidated cities file only part of their levy in the state's levy file; those cells were substituted from the adopted-budget summary and each substitution is listed, town by town, in the payload's metadata.
Direction: rank 1 is the lowest rate throughout this page. That is a sort order, not a verdict — a low rate can reflect a large tax base, heavy state aid, low service levels, or low costs, and this page does not distinguish among them.
More rankings: spending per resident · taxes vs. income · tax base & the four quadrants