Property tax in Stamford, CT is calculated by multiplying 70% of your home’s fair market value by a local mill rate, which for the 2026–2027 fiscal year runs from 24.31 to 25.14 mills for residential property depending on your taxing district. A home worth $600,000 on the market has a taxable assessment of $420,000, and at the District A rate of 25.14 mills that produces an annual bill of about $10,559. Bills come in two installments, due July 1 and January 1, each with a 30-day grace period.
How Stamford Calculates Your Tax Bill
Connecticut law fixes the assessment ratio at 70% of present true and actual value for every municipality in the state.1Justia Law. Connecticut Code 12-62a – Uniform Assessment Date, Rate Stamford has no discretion to change that ratio. If the city determines your home’s fair market value is $600,000, your assessed value is $420,000.
That market value comes from the city’s periodic revaluation. State law requires each municipality to revalue real property at least once every five years.2Justia Law. Connecticut Code 12-62 – Revaluation of Real Property Stamford’s next revaluation is scheduled for October 1, 2027, with later revaluations in 2032 and 2037.3State of Connecticut Office of Policy and Management. Revaluation Schedule 2023–2037 Between revaluations, your assessed value stays the same unless you make significant improvements or successfully appeal.
The Mill Rate and Your District
Once your assessment is set, the city multiplies it by the mill rate. One mill equals $1 of tax for every $1,000 of assessed value.4State of Connecticut Office of Policy and Management. Mill Rates Stamford is unusual in that it uses multiple taxing districts rather than one citywide rate, with the rate reflecting which municipal services reach your property. For the 2026–2027 fiscal year the Board of Finance set these residential rates: District A at 25.14, District B at 24.66, District C at 24.31, and District CS at 24.72.5Stamford Board of Representatives. Budget Process Personal property is taxed at 28.47 mills, and motor vehicles at 24.31 mills. Your tax bill tells you which district applies to your property.
Here is the math for a $600,000 home in District A:
- Fair market value: $600,000
- Assessed value (70%): $420,000
- Annual tax: $420,000 × 25.14 ÷ 1,000 = $10,559
A single mill is worth about $420 a year on that assessment, so the district difference matters. The city resets these rates each fiscal year based on budget needs and other revenue.
When Property Taxes Are Due
Real estate taxes are split into two installments: the first half is due July 1 and the second half is due January 1. Personal property and motor vehicle taxes come as a single installment due July 1, and supplemental motor vehicle taxes are due January 1.6Stamford, CT. Paying Your Taxes
Each installment carries a 30-day grace period. A July 1 bill can be paid through August 1 without penalty, and a January 1 bill through February 1. Watch the window closely. Once the grace period expires, interest is calculated back to the original due date, not the end of the grace period.
How to Pay
Stamford’s online portal lets you look up a bill by year, bill type, and bill number, and it accepts Visa, MasterCard, Discover, Amex, and electronic checks.7City of Stamford. Stamford Tax Collector – Online Tax Payment Portal Convenience fees apply. Credit card payments carry a 2.99% surcharge with a $3.95 minimum, while electronic check is a flat $0.95.6Stamford, CT. Paying Your Taxes On a $5,000 installment, a credit card runs about $150 in fees, so electronic check is almost always the better choice online.
In person, the Office of the Tax Collector is at 888 Washington Blvd (lobby level), open Monday through Friday from 8:30 a.m. to 4:15 p.m., and takes cash, check, money order, or bank check. Payments can also be mailed to the Collector of Taxes at the address listed on the bill. One important exception: if you need DMV clearance within two business days to register or renew a vehicle, you have to pay delinquent motor vehicle taxes in person with cash, money order, or cashier’s check.7City of Stamford. Stamford Tax Collector – Online Tax Payment Portal
If you have a mortgage, your lender probably collects taxes through escrow and pays Stamford directly on your behalf. Check your mortgage statement before paying anything yourself.
What Happens If You Don’t Pay
Missing a deadline is expensive. Connecticut imposes interest at 18% per year, or 1.5% per month, on any delinquent balance, running from the original due date.8Justia Law. Connecticut Code 12-146 – Delinquent Tax or Installment, Interest, Waiver of Interest Any fraction of a month counts as a full month. Paying a July 1 bill two weeks into August means you owe two months of interest, not one.
Connecticut law also creates an automatic tax lien on your property. The lien attaches as of the October 1 assessment date preceding the tax year and takes priority over mortgages and other encumbrances. The municipality can continue the lien by recording a certificate with the town clerk, and if the debt stays unpaid the tax collector can bring a foreclosure action in court.9Connecticut General Assembly. Connecticut General Statutes Chapter 205 – Municipal Tax Liens In the most serious cases the collector can sell the property at public auction after written notice by certified mail and newspaper publication. Even after a sale, the owner has six months to redeem by paying the full amount plus 18% annual interest on the purchase price.10Justia Law. Connecticut Code 12-157 – Method of Selling Real Estate for Taxes
Homeowners with a mortgage face a second risk. Because the tax lien outranks the mortgage, unpaid taxes threaten the lender’s security. Most mortgage contracts treat a tax delinquency as a breach, which triggers the right to demand full repayment. In practice, lenders usually pay the overdue taxes, add the amount to the loan balance, and force you into escrow going forward, which raises your monthly payment.
Exemptions and Tax Relief
Several state-mandated programs can reduce your Stamford tax bill. Filing on time and documenting eligibility matter.
Elderly and Totally Disabled Homeowners
The active program for older and disabled homeowners is governed by CGS § 12-170aa. You must be 65 or older, or under 65 and receiving permanent total disability benefits under Social Security or a comparable government retirement plan. Qualifying income for the preceding calendar year cannot exceed $16,200 if unmarried or $20,000 if married, and those thresholds adjust annually with Social Security cost-of-living increases.11Justia Law. Connecticut Code 12-170aa – Tax Relief for Elderly and Disabled Homeowners
The benefit is a sliding-scale percentage reduction of your tax. Married homeowners in the lowest income bracket (up to $11,700) receive a 50% reduction capped at $1,250 per year. Unmarried homeowners at that income level receive up to 40%, capped at $1,000. Both the percentage and the dollar cap step down as income rises, and homeowners above $23,600 (unmarried) or $28,900 (married) receive no benefit.
Veterans
Veterans who served during a designated wartime period qualify for a property tax exemption under CGS § 12-81(19), and veterans with a service-connected disability rating receive additional exemption amounts scaled to their disability percentage.12Connecticut General Assembly. Veterans Property Tax Exemptions by Town – State-Mandated Exemptions To claim it, file your discharge papers (typically your DD-214) with the Stamford Town Clerk. That filing is one-time, but the exemption does not apply until the paperwork is on record.
Blind and Permanently Disabled Owners
Connecticut provides a $3,000 assessment exemption for legally blind property owners and a $1,000 exemption for those who are permanently and totally disabled. Supporting documentation has to reach the Assessor’s office before October 1 of the year preceding your application.13City of Stamford, CT. List of Property Exemptions These exemptions reduce your assessed value, not your bill directly. At a 25-mill rate, a $3,000 exemption saves roughly $75 a year.
Appealing Your Assessment
If you believe your property is assessed above its actual market value, you can appeal in writing to the Board of Assessment Appeals. The deadline is February 20, and missing it forfeits the appeal for that assessment year. The appeal must include your name, a description of the property, your estimate of value, and the reason you believe the assessment is wrong.14Justia Law. Connecticut Code 12-111 – Appeals to Board of Assessment Appeals
Blank application forms are available at the Assessor’s office. The strength of an appeal depends on the evidence. An independent appraisal from a certified professional carries the most weight, especially paired with recent sale prices of comparable homes nearby. General complaints about high taxes will not succeed. If the board denies the appeal, you can take it to Connecticut Superior Court, though that step usually involves legal counsel and added cost.
One timing note: Stamford’s October 1, 2027 revaluation will reset every property’s assessed value.3State of Connecticut Office of Policy and Management. Revaluation Schedule 2023–2037 If your current assessment already feels high, gathering market data now puts you in a stronger position to challenge the new number when it lands.