Italy VAT number: format and validation

By Remco from Avatcado

Format

IT followed by 11 digits. The local term is Partita IVA (Imposta sul Valore Aggiunto) (P.IVA, Italian).

Pattern: /^\d{11}$/

  • Digits 8-10 are the code of the issuing provincial tax office; the first 7 digits are a sequential taxpayer identifier
  • For most companies the partita IVA numerically coincides with the codice fiscale, but for individuals the codice fiscale is a separate 16-character alphanumeric code

Example of a registered number: IT00905811006

Check digit

Italy VAT numbers carry a check digit (Luhn MOD 10): The 11th digit is a Luhn check digit computed over the first 10 digits, so the doubled-and-summed total must be divisible by 10.

Check a Italy VAT number

Validated live against the Agenzia delle Entrate (official register).

Enter a VAT number to see the live API response

Validate via API

The same validation as an API call, with the example number above:

curl "https://api.avatcado.com/v1/validate?vat_number=IT00905811006" \
  -H "Authorization: Bearer avat_live_your_api_key"
import Avatcado from "@avatcado/node";

const avatcado = new Avatcado("avat_live_your_api_key");
const { data, error } = await avatcado.vat.validate({
  vatNumber: "IT00905811006",
});

if (data?.data.valid) {
  console.log(`Registered: ${data.data.company?.name}`);
}

Free tier includes 500 validations per month. Get an API key or read the API documentation.

Frequently asked questions

What is the difference between a partita IVA and a codice fiscale?

The codice fiscale is Italy's universal tax code held by everyone, while the partita IVA is the 11-digit number issued only to businesses and self-employed professionals for VAT purposes; for most companies the two coincide. Agenzia delle Entrate's Verifica Partita IVA tool returns a number's status and the holder's name.

What is the regime forfettario and its turnover limit?

Italy's flat-tax scheme applies to individuals with annual revenues or fees up to EUR 85,000, confirmed for 2026. Participants keep a partita IVA but charge no VAT and pay a substitute tax of 15 percent (5 percent for new activities); crossing EUR 100,000 ends the regime immediately.

Related guides

VAT rate in Italy

The standard VAT rate in Italy is 22%. Reduced rates: 10%, 5%, 4%. See all Italy VAT rates.

Sources