Door County Treasurer Ryan Schley is urging property owners to plan even further ahead this tax season following a recent U.S. Postal Service (USPS) policy change that could affect when mailed tax payments are considered on time.
In August 2025, the USPS shifted to a new national postmarking process in which mail is now postmarked only after it reaches a regional sorting center, rather than when it is first collected or processed locally. For Door County residents, whose mail typically travels through the Green Bay regional facility, this could mean a delay of several days between placing a payment in the mailbox and the date the envelope is officially postmarked.
This change matters because state and federal laws consider many payments timely based solely on the postmark. A tax bill mailed on time, but postmarked late may be recorded as delinquent, which can result in substantial late fees.
To avoid this situation, Door County taxpayers should mail payments earlier than usual, or consider using the county’s online E-check system or pay in person. While credit and debit card payments include a 2.39% convenience fee, E-check payments cost a flat $1.50, roughly the same as postage and a return receipt.
Another alternative is to bring payments directly to a USPS counter and request a same-day postmark, or to send payments via certified mail, ensuring a verifiable mailing date.
Tax payments for all Door County municipalities can be made through the county’s website.
For in-person payments, the Door County Treasurer’s Office hours can be found here.
