Mill rate
34.35
$1 per $1,000 assessed
Calculator · Towns · Haddam
Middlesex County · 12 of 15 in the county
Haddam property tax
FY2026 mill rate 34.35 (motor vehicle 32.46, capped at 32.46). Real property is assessed at 70% of fair market value. Statewide rank: 135 of 169 (lowest mill rate is 1).
Effective rate
2.40%
Tax ÷ market value
Tax on $1.6M
$38,472.00
$3,206.00 / month
MV mill rate
32.46
Secondary; cap 32.46
Buying in Haddam? A lender PITI estimate should include about $3,206.00/mo of property tax.
Example taxes in Haddam
| Market value | Assessed (70%) | Annual tax | Monthly |
|---|---|---|---|
| $500,000.00 | $350,000.00 | $12,022.50 | $1,001.88 |
| $1,000,000.00 | $700,000.00 | $24,045.00 | $2,003.75 |
| $1,600,000.00 | $1,120,000.00 | $38,472.00 | $3,206.00 |
| $2,500,000.00 | $1,750,000.00 | $60,112.50 | $5,009.38 |
Compared with nearby towns
Same $1,600,000 house in Haddam, Chester and Durham. Open the live calculator to change the price.
Formula
annual tax = (fair market value × 0.70 × 34.35) ÷ 1,000
For a $1,000,000 home in Haddam that is $24,045.00 per year before exemptions and special districts.
Confirm with the Haddam assessor.
Fire districts and other special taxing districts can add mills on top of this municipal rate. Exemptions are not applied here. Think the assessment is too high? See how to appeal a CT property assessment.