Long Island late property tax penalty calculator

Missed a payment date? See exactly how much extra you'll owe based on your county, bill amount, and how late you are. Penalty math compounds — the longer you wait, the worse it gets.

Estimates only. Penalty rates are set by Nassau / Suffolk County law and can change. Confirm your exact balance with the receiver of taxes before paying. This tool does not include tax-sale fees, attorney's fees, or interest from prior unpaid balances. Call your receiver if you've fallen multiple cycles behind.

Inputs

$
For a half-payment (school or general), enter just that half.

Estimated penalty

Total you'll owe
Original bill
Days late
Penalty %
Penalty $
Interest (if applicable)

Nassau penalty schedule

What this calculator does NOT include: tax-sale fees, attorney's costs if the property has gone to lien, accrued interest from prior cycles, or per-receiver service fees. For unpaid balances older than 1 year or properties already in tax-sale proceedings, contact your county comptroller directly.

Why penalties matter

Long Island property tax penalties compound — once a bill goes unpaid, you also lose eligibility for grievance refunds tied to it, and the property becomes susceptible to tax-lien sale. Pay on time when you can.

How LI penalty math actually works

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