From the Receiver of Taxes:

On January 17 2024, Andy Wittman, the Receiver of Taxes for the Town of Islip became aware of a “scanning machine error” at the United States Postal Service (USPS) Mid-Island Processing and Distribution Center in Melville, NY. This error has caused several tax envelopes containing payments to be returned to the sender as “undeliverable.”

Property tax payments for the Town of Islip, and all of Suffolk County, are due on or before January 10, 2024 in order to avoid penalty. Do not discard the returned envelope, as its postmark serves as proof of a timely payment.

Residents who have received their envelopes returned to them are encouraged to contact the Tax Receivers office at 631-224-5580 immediately.