Quick Links  View/Pay Online| Pay by Mail | Hours of Operation|  Where Your Taxes Go | Forms

***The 2022-2023 Tax Bills were mailed in December 2022 to the address associated with each parcel in the Town of Islip. If you did not receive a bill please visit our website (https://tax.islipny.gov) and/or call our office for payment instructions/assistance***

Taxes are due and payable in full upon receipt OR you may choose the option of paying in two halves.

First half taxes are due and payable without penalty on or before January 10, 2023. The office will be open for payment of taxes until 7:00 P.M. that day ONLY. After January 11, 2023, one percent per month will be added to the first half payment (see reverse of tax bill for penalty schedule).

Second half taxes are due and payable without penalty on or before May 31, 2023. The office will be open for payment until 7:00 P.M. that day ONLY. This is the very last day to make this payment to the town and without penalty and interest. You may submit second half payment at any time after the first half is paid. You do not need to wait until May 31.

The office is closed on Saturday, Sunday and holidays.

To View or Make Payment of Taxes:

View/Pay Online:

*** This Online payment service is FOR PROPERTY OWNERS ONLY***

1.   CLICK HERE to visit the payment website at: https://tax.islipny.gov/
   
2. Each property owner will register and will be given access to two parcels.  If you own more than two parcels you will email This email address is being protected from spambots. You need JavaScript enabled to view it., or call the Tax Receiver's office at 631-224-5580 during office hours and with proper information, you will be granted access to your additional properties. You will only need to register once.
3. Any problems or questions regarding the website – please email This email address is being protected from spambots. You need JavaScript enabled to view it.or call the Tax Receiver's office at 631-224-5580 during office hours. 

Methods of Payment :

• E-Check: with a convenience fee of $1.00 (not collected by the Town of Islip)
• MOST Major Credit Cards*: with a convenience fee of 2.09% on the amount that is being charged (not collected by the Town of Islip).  * American Express no longer available.

Questions :

• About your tax information, contact the Town of Islip Office of the Receiver of Taxes at (631) 224-5580
• About your assessment or exemptions, contact the Assessor’s office at (631) 224-5585
• About the STAR Program, call (631) 224-5058 or NYS Department of Taxation and Finance at (518) 457-2036 or www.tax.ny.gov

CAUTION:  Banking websites which allow the Bill Pay option should caution you that you should not pay your local, state or federal taxes by that method. The process of Bill Pay through a banking site typically sends your payment to a Payment Center and then to a mail-house. This will often result in a late payment. If you choose to use this method you will be responsible for any penalties that may occur if the payment is received late. *This does NOT refer to the Town of Islip Online Tax Payment System.

** Please note that not all bank accounts are online compatible.  Accounts such as money market, trust or line of credit etc. may not be compatible with making an online payment.  Please check with your bank or financial institution for details.

Pay by Mail:
Payments can be made by credit card or by check. Make checks payable to: Andy Wittman, Receiver of Taxes. Mail payments to: Receiver of Taxes, 40 Nassau Avenue, Islip NY 11751. Envelopes must be postmarked by the due dates of January 10th for the first half of your taxes and by May 31st for the second half of your taxes. Refer to the back of your tax bill for penalty information.

*Important information to note when paying by mail:

1. Always include a daytime phone number on your check
2. NO METER POSTAGE WILL BE ACCEPTED
3. No vending machine or online postage will be accepted without a USPS postmark
4. Using a online stamp site or vending machine stamp will not guarantee an official USPS Postmark on an envelope

Pay in Person: Visit us at 40 Nassau Avenue in Islip. Building is adjacent to Islip Town Hall.

Back to Top