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. The “Property Search” and “Copy of Tax Bill” options are still under construction. These are new components to the website, please be patient with us while we finish their build-out.
Please see the information below regarding the 2023-2024 tax year.
Office Closed:
- Friday, December 22, 2023 in observance of Christmas Eve
- Monday, December 25, 2023 in observance of Christmas Day
- Monday, January 1, 2024 in observance of New Year’s Day
Half Day:
- Friday, December 29, 2023 in observance of New Year’s Eve – (8:30am – 12 noon)
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.
| TAXES SUBMITTED | LATE PENALTY |
|---|---|
| December 1st – January 10th | No Penalty |
| After January 10th | 1% Penalty |
| After February 10th | 2% Penalty |
| After March 10th | 3% Penalty |
| After April 10th | 4% Penalty |
| May 11th to May 31st | 5% Penalty |
- 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.