🇺🇾 URUGUAY · TAX ID
RUT validator (free) — Uruguay
The Uruguayan RUT (Registro Único Tributario) is the 12-digit tax identifier issued by DGI for businesses operating in Uruguay. It uses a Mod-11 algorithm with a specific DGI weight sequence. This tool validates format and check digit client-side.
Validates locally — your data never leaves your browser. No tracking on input. Format and check-digit validation only.
Validates locally — your data never leaves your browser. No tracking on input.
How RUT (Uruguay) validation works
A Uruguayan RUT has 12 digits: 2 digits identifying the DGI office, 6 digits identifying the company, 3 digits for the dependency code, and 1 check digit. There are no separators in the canonical format.
The check digit uses Mod-11 with weights [4,3,2,9,8,7,6,5,4,3,2] applied left to right over the first 11 digits. Compute the weighted sum, take modulo 11, then the check digit is (11 − mod) % 11.
Uruguay also issues a Cédula de Identidad (CI) for individuals — distinct from the RUT, which is reserved for businesses. This tool validates RUT only. It does not confirm the RUT is registered with DGI.
Frequently asked questions
Do individuals get a RUT in Uruguay?
No. Uruguay's RUT is for businesses (empresas unipersonales, sociedades, etc.). Individuals use the Cédula de Identidad (CI). A sole proprietor (empresa unipersonal) has both: a CI as a person and a RUT as a business.
What does the 3-digit dependency code mean?
Digits 9-11 identify the company's dependency (sucursal, casa central, etc.). The base RUT typically uses 001 for the main office; additional branches get 002, 003, etc.
Does this validator confirm the RUT is registered with DGI?
No. Format and check-digit validation only. Confirming an active RUT requires a query to DGI's contributor service, which is not freely accessible.
Can I validate Uruguayan RUT via API?
Yes. Normadata's Verify API validates Uruguayan RUT alongside CUIT, RUC, NIT and 17 other Latin American tax IDs with a single JSON call.
Want Uruguayan RUT validation in your app?
The Normadata Verify API validates Uruguayan RUT alongside CUIT, RUC, NIT and 17 other Latin American tax IDs.
See the Verify API→