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A Message from the Supervisor

“Welcome to Islip, the 3rd largest town in New York State, but with an endearing small town feel. We are so proud of our town…our beaches, golf courses, marinas, parks, housing opportunities for all, businesses, industrial parks, healthcare and educational institutions including our own Islip MacArthur Airport that provides many job opportunities. I sincerely hope you find this website helpful.” Angie

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Welcome to the Town of Islip Receiver of Taxes homepage. This site has been completely revamped to give taxpayers a more user-friendly experience when inquiring about property taxes.

NOTICE IS HEREBY GIVEN TO THE TAXPAYERS OF THE TOWN OF ISLIP; that Andy Wittman, the Receiver of Taxes has received the 2023-2024 Assessment Roll and Warrant. He will accept payment of taxes by mail or at his office beginning Monday, December 11, 2023. Online payments begin Monday, December 11, 2023, starting at 10am., please visit https://tax.islipny.gov. The tax bills are being mailed out the week of December 11, 2023.

Please see the information below regarding the 2023-2024 tax year.

Office Closed:

  • Monday, May 27, 2024 in observance of Memorial Day

Special Dates/Hours:

  • Wednesday, January 10, 2024 – (8:30am – 7:00pm)
  • Friday, May 31, 2024 – (8:30am – 7:00pm)
The office is closed on Saturday, Sunday and holidays.

***THE 2023-2024 TAX BILL WILL BE MAILED TO THE ADDRESS ON FILE ON OR ABOUT DECEMBER 11, 2023*** You will not receive a bill in December if your property taxes are escrowed through your financial institution.

  • After May 31st, any taxes plus penalty and interest must be paid to the Suffolk County Comptroller’s office, located at 330 Center Drive Riverhead, NY 11901. (631) 852-3000.

*Taxes become a lien on December 1st of each year*