St. Lawrence 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 St. Lawrence County Real Property Department.
Rate context
Confirm2026 rates are municipality- and school-district-specific; no single countywide effective rate is published.
Statement mailing
Confirmtown, village, and school collectors issue bills on separate schedules; the county publishes 2026 tax rolls but not one countywide mailing date.
Payment deadline
Published2026 town and county taxes are payable to local town collectors January–May; village taxes June–September; school taxes September–October. Unpaid school and village taxes remain payable to the County Treasurer through November.
Valuation protest
PublishedMay 26, 2026 (the fourth Tuesday in May) is the standard 2026 Grievance Day under NY RPTL §512; alternate dates may apply by local law, so confirm the municipality's published time and filing instructions.
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.