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Suffolk County, NY property tax deadlines

4 coming property tax dates for Suffolk County, New York. Each one links to its official source and shows the day LevyDay last checked it.

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Next datesBills dueLast day without penaltyAppeal byExemption filing
SuffolkNot on fileJan 10, 2027 Sunsuffolkcountyny.govOct 21See ruletax.ny.govOct 21Mar 1, 2027tax.ny.govOct 21

Deadlines in date order

Date and sourceDeadline
January 10 every yearsuffolkcountyny.govOct 21Last day without penalty First half: pay by this day to avoid interest
Pay your town's Receiver of Taxes. Taxes can be paid from December 1. After January 10, the first half gets 1% interest a month until May 31.
March 1 every yeartax.ny.govOct 21Exemption filing Apply for exemptions in most towns
This is the taxable status date. It's March 1 in most towns. Cities set theirs by charter, and villages often use January 1. Check with your assessor.
May 31 every yearsuffolkcountyny.govOct 21Last day without penalty Second half: last day without interest
After this the taxes are delinquent, and you pay the County Comptroller instead.
Varies, see rule see ruletax.ny.govOct 21Appeal deadline Grievance Day in Suffolk towns
The third Tuesday in May, when the Board of Assessment Review meets.

Appealing your assessed value

Appeal by the date on your noticetax.ny.govOct 21

If you think the county valued your home too high, you can appeal. Filing with the county is free and you can do it yourself.

The official process · How appeals work in New York

Get help filing an appeal

After you send your details, we look for an independent appeal firm or attorney to take your case. We'll be in touch once one has agreed. Firms usually charge a share of what you save, and the one that takes it may pay LevyDay a referral fee.

LevyDay doesn't file appeals or give legal or tax advice. We only pass your details on. The independent firm or attorney that takes your case does the work and sets its own fee.

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Good to know in New York

Official offices

Places in Suffolk County

Among them: Amagansett, Amityville, Aquebogue, Asharoken, Babylon, Baiting Hollow, Bayport, Bay Shore, Baywood, Belle Terre, Bellport, Blue Point, Bohemia, Brentwood, Bridgehampton, Brightwaters, Brookhaven, Calverton, Captree, Centereach, Center Moriches, Centerport, Central Islip, Cold Spring Harbor, and 135 more. Every place in the county gets the dates above.

Nearby in the New York list

SaratogaSchenectadySchoharieSchuylerSenecaSteubenSullivanTiogaTompkinsUlsterWarrenWashington

All New York property tax deadlines