About ZipNumbers

Sales tax looks like one number and is actually four. A receipt in Denver bundles a state rate, a city-and-county rate, a transit district and a cultural facilities district into a single line. Most rate lookups hand you the total and stop there, which is useless the moment you need to file a return, price a product, or work out why the store one town over charged you less.

ZipNumbers publishes the breakdown. 94 metros across 50 states, each with the component layers itemized, an effective date, a confidence label, and a link to the revenue agency table the numbers came from. Where we reconstructed a split rather than reading it directly, the page says so.

The site is deliberately small. We add a city when its rate components have been read from the source, not when a template can generate a page for it. That is why you will find no page for a city we have not verified, and why every page has something on it that a script could not have written.

Editorial rules

• Primary sources only. No competitor scraping, no licensed rate feeds.
• Every number carries a date and a source link.
• Estimates are labelled as estimates, with the formula shown.
• No page ships without content that is specific to its subject.
• We are not tax advisors and do not give tax advice.