Argentine CUIT Generator with Verifier
Private by design — runs entirely in your browser
A CUIT is the Argentina 11-digit tax ID with prefix indicating individual/company. Toova generates syntactically valid CUITs in your browser — perfect for testing, fixtures, and demo data. The generated values pass front-end validators but are not registered with any official authority.
What it is
CUIT (Clave Única de Identificación Tributaria) is the 11-digit Argentine tax ID. It has the form PP-DDDDDDDD-C where PP is a 2-digit prefix indicating type (20/23/24/27 for individuals, 30/33/34 for companies), DDDDDDDD is an 8-digit DNI or company serial, and C is a single check digit.
How the algorithm works
Weights from left to right over positions 1-10 are 5, 4, 3, 2, 7, 6, 5, 4, 3, 2. Compute r = 11 - (sum mod 11). If r is 11, the check is 0. If r is 10, the CUIT would be invalid by spec — regenerate the serial. Otherwise the check is r. Toova performs this regeneration loop so every output is guaranteed valid.
Frequently Asked Questions
- Are these CUIT numbers real?
- No. They satisfy the official algorithm but are not registered in any Argentina authority's database. Front-end validators accept them; an official lookup would reject them.
- Can I use a generated CUIT in production?
- Only for testing — fixtures, demo screens, form validators. Using a generated CUIT to impersonate someone or evade tax law is fraud.
- Why does my validator accept these?
- Because most CUIT validators check the mathematical formula (or format for prefix-based IDs), not the registry. Toova's outputs pass the math.
- Does Toova store or log the CUITs I generate?
- No. All generation runs in your browser via crypto.getRandomValues. There are no outbound requests.