2026 fiscal calendar
Know the tax date before it becomes a penalty date.
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The verified record below separates published figures from dates that require confirmation with City of Suffolk Office of the Real Estate Assessor; Treasurer collects real estate taxes; Department of Social Services administers elderly/disabled relief.
Effective rate
$1.07 per $100 citywide; $1.175 Downtown Business District and $1.31 Route 17 Taxing District, rates effective through June 30, 2026.
Statement mailing
official source reviewed does not publish a specific 2026 real-estate bill mailing date.
Payment deadline
Two installments due June 5 and December 5, 2026.
Valuation protest
May 1, 2026 for the Board of Equalization application to seek review of the January 1, 2026 valuation; informal review is available through the Assessor.
Critical payment warning
Do not assume a grace period.
The verified county 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 the published payment deadline as a hard operational date and retain your receipt or confirmation number.
Read the calendar in order
From assessment to collection
1. Valuation 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.
2. Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
3. Payment 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.