Property tax in Oyster Bay is collected by the Receiver of Taxes on a schedule set by NY State law and county code. Here are the 2026 due dates, what gets billed when, and what happens if you pay late.
| Bill | Mailed | Due (penalty-free) | After |
|---|---|---|---|
| 1st half school tax | Oct 2025 | Nov 10, 2025 | 1% penalty after Nov 10; 2% after Dec 10 |
| 2nd half school tax | Apr 2026 | May 10, 2026 | 1% penalty after May 10 |
| 1st half general tax | Jan 2026 | Feb 10, 2026 | 1% penalty after Feb 10 |
| 2nd half general tax | Jul 2026 | Aug 10, 2026 | 1% penalty after Aug 10 |
Nassau County applies a graduated penalty schedule. Paying within the first month after the due date typically incurs a 1% penalty; missing later periods adds further interest each month, then a tax lien if unpaid.
If you escrow through your mortgage, the lender pays directly — you don't see the bill. If you pay directly, set a calendar reminder for both the school and general dates.
No. The cycle dates are set by NY State law and Nassau / Suffolk County code. The year on the bill changes, but the calendar dates stay the same.
Penalties accrue against the property, not the lender. Contact your servicer immediately and demand they make the payment plus penalty. They are legally required to escrow correctly.
At closing, the title company prorates property tax between buyer and seller through closing date. The seller pays for the period they owned; you pay for the rest. After closing, the bill is in your name.
Some receivers accept advance payment. Federal SALT-deduction caps may limit the tax benefit. Consult a CPA.
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Subscribe →Last verified: 2026-05-11. Tax rules change; we re-verify each page quarterly.
Estimates and educational content only — not legal, tax, or financial advice. Verify with your county or town receiver, an attorney, or a CPA before making financial decisions.