Connecticut’s 70% Assessment Ratio, 5-Year Revaluations and 169-Town Mill Rate Math — CT Home Field Guide
Updated October 2026
Two Connecticut homes with the same purchase price can produce very different tax bills. Each of the state’s 169 towns sets its own mill rate, and some addresses also carry fire-district or other tax-district charges. Your mortgage budget needs the actual property’s assessment and taxing districts, not a statewide tax average.
Calculate the bill from assessed value
Connecticut generally assesses real estate at 70% of fair market value established through the town’s latest revaluation. Towns conduct revaluations on a five-year cycle. A mill represents one dollar of tax for every $1,000 of assessed value.
Annual tax = assessed value × mill rate ÷ 1,000.
| Calculation step | Example |
|---|---|
| Revaluation fair market value | $400,000 |
| Assessment at 70% | $280,000 |
| Town tax at 30 mills | $8,400 |
| Additional district tax at 2 mills | $560 |
| Combined annual tax | $8,960 |
That example produces a monthly tax budget of approximately $747 before insurance or mortgage costs. Exemptions, assessment adjustments, and local billing practices can change the actual result.
The Connecticut Office of Policy and Management provides statewide property-tax information. Obtain the property record card and current bills from the town to verify the address-specific inputs.
Read revaluation changes correctly
A $400,000 purchase does not automatically mean the town immediately resets the assessment to $280,000. Assessment follows the applicable grand list and valuation process, not simply the closing price.
Likewise, a large increase in assessed value does not necessarily create the same percentage increase in taxes. Mill rates may change as the town distributes its budget across the updated tax base. Ask whether a revaluation, phase-in, new construction assessment, or pending appeal affects the advertised bill.
Compare neighboring properties cautiously: different exemptions or district boundaries can make their bills misleading.
Plan for escrow and installment timing
July and January semiannual installments are common, but verify the town’s actual schedule. Your lender may collect tax escrow monthly while paying the municipality at installment deadlines. An escrow analysis can later change your payment if taxes rise or the account develops a shortage.
Use the monthly payment calculator with verified taxes and review our closing adjustments guide for prorations. The Consumer Financial Protection Bureau explains how escrow appears in mortgage disclosures and why the total payment can change even with a fixed interest rate.
Compare Current Mortgage Rates
Compare current APRs, points, fees, and estimated monthly payments from participating lenders below.
Loan Program Comparison: 2026 Benchmarks
Connecticut’s 70% Assessment Ratio, 5 Year Revaluations and 169 Town Mill Rate Math — Choose a mortgage by comparing eligibility, upfront cash and total monthly costs, not the advertised rate alone. Conventional, FHA, VA and USDA serve different borrowers. Confirm county limits, taxes, insurance and lender requirements before comparing personalized Loan Estimates for your household.
Historical 2025 one-unit comparison: conforming $832,750; FHA floor $541,287. County and unit-count limits can differ.
| Loan program | Down payment / equity | 2026 one-unit baseline | Costs and page-specific comparison |
|---|---|---|---|
| Conventional | 3%–5% subject to eligibility | $832,750 | PMI generally below 20% down |
| FHA | 3.5% at 580+; 10% at 500–579 | $541,287 floor | 1.75% upfront MIP; 0.55% annual for >95% LTV, base loan ≤$726,200, term >15 years |
| VA | 0% for eligible borrowers | No VA limit with full entitlement | No monthly PMI; funding fee unless exempt |
| USDA | 0% for eligible borrowers | Income, address and repayment eligibility | Guarantee and annual fees; confirm current schedule |
| Jumbo | Lender-specific cash and reserves | Above applicable conforming limit | Lender-specific pricing and insurance |
| Home Equity / Refinance | Equity and underwriting dependent | Property and lender dependent | Compare closing costs, term and break-even |
Sources: FHFA limits; HUD FHA limits.
Editorial Methodology & Primary Sources
Verification date: Not recorded; check the primary source and lender timestamp before relying on an estimate.
Rate comparisons use participating lender feeds, not a whole-market survey or guaranteed offers. Freddie Mac PMMS is a market benchmark, not a personalized quote. Calculator models rely on published regulatory formulas and disclosed assumptions rather than fabricated first-person loan testing.
Monthly principal and interest use the amortization formula P × r / (1 − (1 + r)−n), where r is the monthly note rate and n is the number of payments; at zero interest use P / n. PITI adds monthly property taxes and homeowners insurance; PMI is separate. APR includes applicable finance charges under Regulation Z and is not the note rate used for payments. Compare lender Loan Estimates for actual APR and fees.
- Consumer Financial Protection Bureau (CFPB) — Loan Estimates, APR and borrower disclosures; Regulation Z.
- U.S. Department of Housing and Urban Development (HUD / FHA) — FHA program guidance.
- U.S. Department of Veterans Affairs (VA) — VA loan eligibility and benefits.
- Freddie Mac Primary Mortgage Market Survey (PMMS) — published rate benchmarks.
- U.S. Census state tax collections — state property tax benchmarks; confirm parcel-specific assessments and exemptions with the state revenue department and local assessor.
- Connecticut Housing Finance Authority — state housing finance and property tax authority.
- Connecticut Office of Policy and Management — state housing finance and property tax authority.
The payment snapshot uses illustrative annual taxes of 1% of home price, $1,200 insurance and 0.5% PMI below 20% down, not verified local quotes. Other calculators disclose their inputs and assumptions. Published guidance and lender feeds may change independently; confirm current program rules, taxes and offers before a decision.