Williamsville, New York sales tax rate: 8.75%
Last updated Checked monthly
The sales tax rate in Williamsville, New York is 8.75%. That’s the 4% state rate plus 4.75% in local taxes. It’s higher than 154 of the 174 New York cities we checked, and 17 other cities pay the same.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Williamsville combined rate
8.75%
- New York state
- 4%
- Erie CountyLocal
- 4.75%
Williamsville sales tax calculator
Enter a price and what you’re selling.
- New YorkState · 4%$4.00
- Erie CountyLocal · 4.75%$4.75
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoWilliamsville sales tax rate breakdown
State and local taxes add up to 8.75%.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of New York | State | 4% |
| Erie County | Local | 4.75% |
| Combined rate | 8.75% |
Rate history
- July 20238.75%
- July 20248.75%
- July 20258.75%
- July 20268.75%
- Today8.75%
No change since July 2023.
Sales tax near Williamsville
Closest cities
- Sloan5 mi8.75%
- Buffalo8 mi8.75%
- North Tonawanda9 mi8%
- Lackawanna11 mi8.75%
- East Aurora15 mi8.75%
- Alexander25 mi8%
- Oakfield25 mi8%
- Medina25 mi8%
Elsewhere in Erie County
- Buffalo8.75%
- Lackawanna8.75%
- East Aurora8.75%
- Sloan8.75%
- Farnham8.75%
Charge the right rate in Williamsville, on every order.
Zamp calculates tax at each customer’s address, then files and pays every New York return for you, with a sales tax team you can call.
Williamsville sales tax questions.
Still have questions? Call us at 1-866-438-9267 or email us at support@zamp.com.
What is the sales tax rate in Williamsville, New York?
The combined sales tax rate in Williamsville is 8.75% as of November 2, 2026. It’s made up of 4% New York state tax, 4.75% Erie County.
Does the sales tax rate vary within Williamsville?
Williamsville has no special-district taxes, so most addresses in the city pay the same 8.75%: New York’s 4% plus 4.75% county tax. This rate was calculated for Williamsville’s 14221 ZIP code; the calculator prices any exact address.
Is SaaS taxable in Williamsville?
Yes, at the full 8.75%.
Do online sellers have to collect sales tax in Williamsville?
Yes, if they have nexus in New York: more than $500,000 in New York sales in the previous or current calendar year, or a physical presence in the state. They register with the New York State Department of Taxation and Finance and charge the rate at the buyer’s address.
Sources. New York State Department of Taxation and Finance · Zamp Sales Tax API, for Williamsville’s 14221 ZIP code. Rates are checked monthly and are for information, not tax advice.
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