Privacy policy
Last updated 1 January 2026.
What we collect
ZipNumbers does not require an account and does not ask for personal information. The sales tax calculator runs entirely in your browser — the amounts you type are never transmitted to us or stored anywhere. Standard server logs may record IP address, user agent and requested URL for security and aggregate traffic analysis.
Cookies and advertising
If third-party advertising is enabled on this site, those partners — including Google and its certified vendors — may set cookies or read device identifiers to serve and measure ads. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this and other sites. You can opt out of personalised advertising at Google Ads Settings or opt out of third-party vendor cookies at aboutads.info.
EEA, UK and Swiss visitors
Where required, a consent notice is presented before any non-essential cookie is set, and consent can be withdrawn at any time. Personalised advertising is not served without consent.
California residents
We do not sell personal information as that term is defined by the CCPA. You may request information about data associated with your visits by contacting us.
Children
This site is not directed at children under 13 and we do not knowingly collect their data.
Contact
Questions about this policy: hello@zipnumbers.com.