Mill rate
16.23
$1 per $1,000 assessed
Calculator · Towns · Old Lyme
New London County · 2 of 21 in the county
Old Lyme property tax
FY2026 mill rate 16.23. Real property is assessed at 70% of fair market value. Statewide rank: 11 of 169 (lowest mill rate is 1).
Effective rate
1.14%
Tax ÷ market value
Tax on $1.6M
$18,177.60
$1,514.80 / month
MV mill rate
16.23
Secondary; cap 32.46
Buying in Old Lyme? A lender PITI estimate should include about $1,514.80/mo of property tax.
Example taxes in Old Lyme
| Market value | Assessed (70%) | Annual tax | Monthly |
|---|---|---|---|
| $500,000.00 | $350,000.00 | $5,680.50 | $473.38 |
| $1,000,000.00 | $700,000.00 | $11,361.00 | $946.75 |
| $1,600,000.00 | $1,120,000.00 | $18,177.60 | $1,514.80 |
| $2,500,000.00 | $1,750,000.00 | $28,402.50 | $2,366.88 |
Compared with nearby towns
Same $1,600,000 house in Old Lyme, Lyme and East Lyme. Open the live calculator to change the price.
Formula
annual tax = (fair market value × 0.70 × 16.23) ÷ 1,000
For a $1,000,000 home in Old Lyme that is $11,361.00 per year before exemptions and special districts.
Confirm with the Old Lyme 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.