How sales tax works in Nassau County (Long Island)
Purchases in Nassau County (Long Island) carry a combined sales tax of about 8.63% — the New York state rate plus county and city add-ons.
Sales tax is added at checkout to the price of taxable goods, so the total is the listed price plus the combined rate.
The exact rate can vary slightly between cities within Nassau County (Long Island); this uses a typical combined figure for the area.
Why the rate varies within New York
Counties and cities set their own local sales tax on top of the state rate, so two locations in New York can charge different totals.
For the precise rate at a specific address, check by ZIP code with the Nassau County Assessor (nassaucountyny.gov) or the state revenue department.
What is taxed
Most physical goods are taxable, while many areas exempt or reduce tax on groceries and prescriptions.
This is a planning estimate at the typical combined rate. Confirm the rate and exemptions for your purchase with the Nassau County Assessor (nassaucountyny.gov).
Frequently asked questions
What is the sales tax rate in Nassau County (Long Island)?
The typical combined sales tax rate in Nassau County (Long Island) is about 8.63%, including the New York state rate plus local add-ons.
How do I calculate Nassau County (Long Island) sales tax?
Multiply the purchase amount by 8.63%. This calculator does it and shows the tax and total instantly.
Is the rate the same across Nassau County (Long Island)?
Not always — cities within the county can add their own tax, so the rate varies slightly by address. This uses a typical combined figure.
Are groceries taxed in Nassau County (Long Island)?
Many areas exempt or reduce tax on groceries and prescriptions. Check the Nassau County Assessor (nassaucountyny.gov) for the categories that apply.