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

Due on or before June 1, 2020

Office hours: Monday – Friday 8:30-4:30 - subject to change

June 1, 2020 8:30-7:00pm


Please note that due to social distancing laws, we can only help 2-3 people inside the office at a time. This means you will need to stand in line, outside 6’ apart, wearing a face mask.

*If you do not have your tax bill you must call ahead so it can be printed ahead of time 631-224-5580. The following methods ONLY:
  • Cash

  • Multi-Method: If you are paying with multiple methods of payment (check and cash or credit card etc.) you must come in the office.

  • NEW Drop Box. Please put your payment stub and check in an envelope, include daytime phone # and then seal envelope with tape. Drop into drop box located inside the south door of 40 Nassau Ave.


  • Check: Please mail your check and payment, we ask that you call a week later to make sure we received it. USPS postmark must read June 1, 2020 or sooner.

  • Credit Card: fill out the back of the payment stub completely and mail or drop into drop box -please follow drop box instructions above, (2.09% fee, not collected by the Town of Islip).


  • Online at (Full year, first half or second half payments only. No partial or mixed method payments available online.)
    • e-check $1.00 fee
    • credit card 2.09% of the amount you are charging (not collected by the Town of Islip)

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