Westchester County, New York property-tax payment and appeal deadlines
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The reviewed record below separates published figures from items that still require confirmation with Westchester County Department of Planning, GIS Division.
Rate context
ConfirmNot published in the reviewed official sources.
Statement mailing
PublishedCounty tax bills are generally issued April 1; village bills July 1; school bills September 1; exact billing and installment rules vary by municipality.
Payment deadline
Published2026 schedule verified from official Westchester municipal tax guidance: county bills due April 30, village bills generally due August 1, and school bills generally due September 30; municipal exceptions and installments apply.
Valuation protest
PublishedNYS 2026 grievance guidance identifies the Westchester County town Board of Assessment Review date as the third Tuesday in June; confirm the exact filing window with the local assessor.
Do not assume a grace period.
The reviewed record identifies the payment timing above but does not establish a universal penalty schedule for this page. Late charges, interest, collection costs, tax-sale procedures, and lien or foreclosure timelines can depend on state law and the local collector’s process. If the deadline is close or a balance is delinquent, contact the tax collector directly and request the current payoff amount in writing.
Treat a published payment deadline as a hard operational date and retain your receipt or confirmation number.
From assessment to collection
01Valuation and notice
Review the assessment notice as soon as it arrives. The protest window may run from the notice date rather than from the payment due date.
02Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
03Payment confirmation
Use the official collector channel, then save the receipt, transaction reference, and date posted. A bank submission is not always the same as a county posting date.