Reference
Every state's tax agencies, in one place.
The revenue department and the unemployment agency for each state, with the registration portal each one runs. Every link points at the agency's own site, each row carries the date it was checked, and a state we have not verified yet says so instead of linking a guess.
Not yet verified against the agency's own site, so not yet linked: Utah. Rows are added as each state's pages are checked, never from a list someone else compiled.
Using this
Last updated 2026-10-02, the most recent date any row was checked. Each row has its own anchor: add the two letter state code to the URL. If an agency moves a page, tell us through the contact page and we will re-verify the row.
About the provider
Regcrest LLC is a document preparation and filing service based in Allentown, Pennsylvania, founded in 2026. It prepares and files state payroll and sales tax registrations, account closures, and resale certificates on behalf of the businesses that instruct it, and works behind accounting firms, bookkeepers, and payroll providers as well as directly with businesses.
Regcrest LLC is not a CPA firm and not a law firm. It gives no tax or legal advice. It files in all 50 states, and publishes a full page for the 29states it has verified against the agency's own material so far, each one showing the date it was checked. For anything that turns on your specific situation, ask a licensed accountant or attorney.