Nassau County transfer tax calculator
Type a sale price and see what the state takes, who pays it, and whether the mansion tax lands. Rates come from the New York State Department of Taxation and Finance, not from a rule of thumb.
Nassau adds no county transfer tax. It does add recording fees at the County Clerk, covered below.
What each tax is
State transfer tax, paid by the seller. New York charges $2 for every $500 of the price, or fractional part of it, which is 0.4 percent. On a $700,000 sale that is $2,800. It is the one nearly every Nassau seller pays, and it comes off the proceeds at closing.
Mansion tax, paid by the buyer. One percent of the whole price once a residence reaches $1,000,000. Read that again, because it catches people: it is a cliff, not a bracket. At $999,000 the tax is nothing. At $1,000,000 it is $10,000. There is real money in that one dollar, and it is worth negotiating around when a price lands near the line.
Nassau County charges no transfer tax of its own, and plenty of pages say otherwise. Look closely at the ones that do. They quote a Nassau rate of $4 per $1,000, which is the identical rate to the state's $2 per $500 written a different way, and then add it a second time. The Nassau County Clerk's own fee schedule labels that figure the New York State rate. If a calculator told you to expect roughly 0.8 percent as a Nassau seller, it counted the same tax twice. You will also see NYC's extra taxes applied statewide, the additional base tax and the supplemental tax that runs up to 2.9 percent. Those are for property inside the five boroughs only.
What Nassau does add is fees, not taxes, and they are not small. Recording a deed with the County Clerk carries a per document recording fee, a per page fee, a block fee, an equalization and assessment filing fee for the RP-5217 form, a filing fee for the state TP-584 form, and a tax map verification letter from the Assessor, which is the one that surprises people because it costs hundreds rather than tens. Here is what I can put a number on, from the Judicial Title recording schedule confirmed in writing through a lender partner in August 2026: the tax map verification letter is $270 per document, and it attaches to the deed and again to the mortgage, so a financed purchase carries it twice. The RP-5217 filing fee is $125 on a one to three family home and $250 on other property. Pages beyond the base run $5 each. The remaining base recording amounts get adjusted by the county, and a court decision already forced one of them down, so I am not printing figures I cannot verify against the Clerk's current schedule. Your attorney will have the exact stack for your closing date, and the Nassau County Clerk publishes them.
No Peconic Bay tax here. That preservation fund tax applies to the five East End towns in Suffolk only. If you are also looking east, the Suffolk version of this page covers it.
What this does not include
Transfer taxes are one line on a closing statement. A seller also carries the attorney, the payoff, and the brokerage fee. A buyer carries the lender fees, the title insurance, the survey, and the recording costs. If you want the whole picture for your own sale rather than one line of it, the free home review lays every number out side by side.
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Common questions
How much is the transfer tax in Nassau County, NY?
The state charges $2 for every $500 of the sale price, which is 0.4 percent, and the seller pays it. On a $700,000 sale that is $2,800. Nassau County adds no transfer tax of its own, whatever the calculators that count the state rate twice tell you. It does add recording fees at the County Clerk.
Who pays it, the buyer or the seller?
The seller pays the state transfer tax. The buyer pays the mansion tax when one applies, and the buyer pays the Peconic Bay preservation tax on the East End. If the seller does not pay, the buyer becomes liable, which is one reason it gets settled at the closing table rather than afterward.
What is the mansion tax on Long Island?
One percent of the whole purchase price on a home selling for $1,000,000 or more, paid by the buyer. At $999,000 it is nothing and at $1,000,000 it is $10,000, so a price sitting near the line is worth a conversation before the contract is signed.
Do the New York City surcharges apply here?
No. The additional base tax and the supplemental tax apply to property in New York City only. Several calculators apply them statewide, which overstates a Nassau seller's cost by thousands of dollars.
Where do these rates come from?
The New York State Department of Taxation and Finance, on its real estate transfer tax page, checked when this page was built. Rates change by law, so if you are closing on a specific date, confirm with your attorney or title company. Nothing here is legal or tax advice.
Disclaimer: every figure on this page is computed with the calculation formulas published by the New York State Department of Taxation and Finance: the real estate transfer tax at $2 for each $500 of consideration or fractional part, and the mansion tax at 1 percent of consideration at $1,000,000 and above. Actual charges at your closing may vary with the specifics of the transaction, exemptions, and any change in law. Your attorney and title company provide the binding figures. This page is a starting point, not legal or tax advice, and not a closing statement.
More on this: what buyers and sellers actually pay and the town by town market guides.