Name: Prophit.ai free sales tax datasets
Creator: Prophit.ai

Free sales tax rate data, from the Prophit.ai Sales Tax Atlas

The datasets below are free to download and free to cite with attribution to Prophit.ai. Every rate aggregates the official state sources — the Atlas pins each figure to the Department of Revenue or Streamlined Sales Tax publication it came from, so you can verify before you rely on it. This is the research material for checking sources and planning an evaluation. The local-rate CSV is a dated July–September 2026 snapshot; it is not a current transaction tax determination.

Downloadable datasets

Local sales tax rates 2026 (CSV) — County and city rates behind the Prophit.ai local-rate study — the same source-pinned content layer that drives the Sales Tax Atlas.
Sales tax filing calendar 2026 (CSV) — State filing deadlines for 2026, including weekend and holiday shifts, as structured data.
Sales tax filing calendar 2026 (ICS) — The same 2026 deadlines as a calendar subscription file for Outlook, Google Calendar and Apple Calendar.
Sales tax software pricing index 2026 (CSV) — The published-price modeling behind the Prophit.ai pricing index study.

Browse instead of download

The Sales Tax Atlas carries 51 state and DC guides and over 3,800 county and city rate pages, each with its official source pinned. The local-rate study and 2026 filing calendar explain the methodology behind these files.

Need to calculate tax on an actual transaction?

A rate table does not determine product taxability, exemption eligibility or the correct sourcing facts. Evaluate the calculation workflow with representative addresses, items and certificate evidence.

Evaluate the Sales Tax Engine Read the API quickstart Review pricing and included volumes

Attribution and sources

Cite as: "Source: Prophit.ai Sales Tax Atlas (prophit.ai/resources/sales-tax-atlas)". Underlying figures aggregate official state Department of Revenue publications and Streamlined Sales Tax boundary and rate files; each Atlas page links its specific source. Rates change — verify the pinned source before filing on any figure.