How Connecticut’s 5-Year Municipal Property Tax Revaluations Change Your Monthly Escrow — CT Home Field Guide

Updated October 2026

A Connecticut home’s current tax bill can be a poor forecast of next year’s mortgage escrow when the town is approaching revaluation. Municipalities generally revalue real estate every five years, and the resulting assessment enters a budget process that also determines the mill rate. A rising assessment does not automatically mean an equally large percentage increase in taxes.

Translate assessment into an actual tax bill

Connecticut’s standard real estate assessment is 70% of fair market value at the applicable revaluation. One mill equals $1 of tax for every $1,000 of assessed value.

The example is illustrative, not a quoted town rate. Each of Connecticut’s 169 municipalities sets its own mill rate, and some addresses also carry fire district or other tax district charges. The Connecticut Office of Policy and Management provides statewide property-tax resources; the municipal assessor and tax collector supply address-specific information.

Separate revaluation, phase-in, and escrow timing

If townwide property values rise substantially, officials may adopt a lower mill rate while still collecting a larger overall levy. Your individual change depends partly on whether your property appreciated faster or slower than the town’s tax base.

Some municipalities adopt authorized phase-ins. A phase-in is not automatic statewide, so ask which assessment applies to each upcoming grand list and bill.

Many Connecticut real estate bills are payable in July and January installments. Confirm the actual local schedule, especially for district taxes. A mortgage servicer may initially collect escrow using an older bill, then discover both a higher ongoing obligation and an accumulated shortage. Those are separate reasons a payment can rise. The Consumer Financial Protection Bureau explains mortgage payments and escrow basics.

Stress-test the payment before closing

Request the latest assessment notice, current tax bills, revaluation calendar, and any adopted phase-in schedule. Ask whether exemptions reflected in the seller’s bill will end after transfer.

Run current and higher-tax scenarios through the monthly payment calculator. Then use the closing cost estimator to distinguish prepaid taxes, initial escrow deposits, and seller-buyer tax adjustments. Keeping these categories separate prevents a surprisingly large closing figure from being mistaken for a permanent monthly expense.