Hungarian VAT Number Check

About the Hungarian VAT number

Hungarian businesses have a domestic tax number (adószám) written as 11 digits in three blocks, for example 12345678-1-12. For intra-EU trade they use the community tax number (közösségi adószám): HU followed by the first 8 digits of the domestic number.

The Hungarian tax administration is the National Tax and Customs Administration (NAV). Only the 8-digit community form can be checked in VIES; the full 11-digit domestic number is the wrong format.

Hungarian VAT number format

• Format: HU + 8 digits
• Example: HU12345678 (illustrative, not a real number)
• Length: 10 characters including the prefix
• Local name: közösségi adószám (community tax number), adószám
• The format is HU followed by exactly 8 digits.
• Those 8 digits are the first block of the domestic adószám (the part before the first hyphen).

Where to find a Hungarian VAT number

• On Hungarian invoices, which often show both the domestic tax number and the community tax number.
• On the company website and in contracts.
• From the supplier: ask for the közösségi adószám, not the adószám.

Common input mistakes

• Entering the full 11-digit domestic tax number (HU12345678112).
• Keeping the hyphens and blocks of the domestic format.
• Leaving out the HU prefix.
• Entering the company registration number (cégjegyzékszám, for example 01-09-123456) instead of the tax number.

Hungarian VAT numbers in practice

The three blocks of the domestic adószám each carry meaning. The first 8 digits identify the taxpayer (the törzsszám, whose eighth digit is a check digit), the single middle digit shows the VAT status, and the last two digits identify the regional tax directorate. Only the first block goes into the EU VAT number.

Hungarian companies also have a company registration number (cégjegyzékszám), written in three groups such as 01-09-123456. It identifies the company in the company register and is not a tax number. Hungary requires businesses to report their invoice data to NAV in real time through the Online Számla system, where each party is identified by its tax number.

How to check Hungarian VAT numbers

Paste your Hungarian numbers into the validator above, one per line, each starting with HU. Spaces, dots and hyphens are removed automatically, and lower-case letters are converted to upper case.

justaxit first checks each entry against the Hungary format (HU + 8 digits). Numbers with the wrong shape are flagged immediately and are not sent to VIES. Well-formed numbers are then checked through VIES, which asks the Hungary tax administration whether the number is currently valid for intra-EU transactions.

Each result shows valid or invalid, plus the name and address when the member state shares them through VIES. If the national service is temporarily unavailable, the number is marked for retry rather than reported as invalid. Registered users can save lists and export results to CSV, Excel or PDF.

Hungarian VAT number FAQ

What is the format of a Hungarian EU VAT number?

HU followed by 8 digits, for example HU12345678.

How do I get the community tax number from a Hungarian adószám?

Take the first 8 digits (the block before the first hyphen) and put HU in front. 12345678-1-12 becomes HU12345678.

Why does the full Hungarian tax number fail?

VIES only accepts the 8-digit community form. The two extra blocks of the domestic tax number are not part of the EU VAT number.

What do the three parts of a Hungarian adószám mean?

The first 8 digits identify the taxpayer, the middle digit shows the VAT status and the last 2 digits the regional tax directorate. Only the first 8 digits go into the EU VAT number.