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Validate Romania VAT Numbers via API
When building B2B applications that serve Romania (România), validating your customers' CIF / CF (Cod de Identificare Fiscală / Cod Fiscal) is essential for EU VAT compliance and protecting your business from tax liability.
The TaxID API provides instant validation of Romania VAT numbers through the EU VIES (VAT Information Exchange System). Every request returns the registration status, company name, and registered address — with sub-100ms response times for cached results.Romania applies a standard VAT rate of 19% (CIF / CF) and is fully supported by the VIES system.
QUICK START
curl -H "Authorization: Bearer YOUR_API_KEY" \ http://localhost:3000/api/v1/validate/RO/RO1234567890
Code examples
Choose your language. Every example validates a Romania VAT number and returns the registration status with company details.
const res = await fetch('http://localhost:3000/api/v1/validate/RO/RO1234567890', {
headers: { 'Authorization': 'Bearer YOUR_API_KEY' }
});
const data = await res.json();
// { valid: true, status: "active", company_name: "...", country_code: "RO", cached: false }
console.log(data);When to validate Romania VAT numbers
B2B cross-border sales
When selling goods or services to Romania businesses in other EU member states, you must verify their CIF / CF (Cod de Identificare Fiscală / Cod Fiscal) to correctly apply zero-rate VAT under the reverse charge mechanism. Failing to validate before zero-rating a transaction makes your company liable for the full VAT amount if the customer turns out to be unregistered.
E-commerce and SaaS checkout
If your platform accepts Romania business customers, validating the CIF / CF (Cod de Identificare Fiscală / Cod Fiscal) at checkout determines whether to apply 19% VAT (B2C) or zero-rate the sale (B2B reverse charge). This directly affects your invoicing, revenue recognition, and quarterly VAT return figures.
Supplier and partner onboarding
For ERP systems, procurement platforms, and DAC7-regulated marketplaces, validating aRomania supplier's CIF / CF (Cod de Identificare Fiscală / Cod Fiscal) during onboarding prevents invalid numbers from entering your accounting system — which can cause rejected invoices and audit failures. Validate once at onboarding, then periodically re-validate to catch deregistrations.
About Romania VAT format (CIF / CF)
Romania has one of the most variable VAT number lengths in the EU (2 to 10 digits), which can complicate format validation. Romania has a growing IT outsourcing sector and is a significant source of B2B services across the EU.
| Field | Value |
|---|---|
| Country code | RO |
| Local name | CIF / CF (Cod de Identificare Fiscală / Cod Fiscal) |
| Format | RO + 2 to 10 digits |
| Regex pattern | ^RO[0-9]{2,10}$ |
| Example | RO1234567890 |
| VIES supported | Yes |
VAT rates in Romania
Romania applies a standard CIF / CF rate of 19%. Reduced rates of 9% and 5% apply to essential goods and services.
| Rate type | Percentage | Currency |
|---|---|---|
| Standard rate | 19% | RON |
| Reduced rate | 9% | RON |
| Reduced rate | 5% | RON |
Frequently asked questions
What is the Romania VAT number format?
Romania VAT numbers (CIF / CF (Cod de Identificare Fiscală / Cod Fiscal)) follow the format: RO + 2 to 10 digits. A valid example is RO1234567890. The TaxID API validates both the format locally and the registration status via VIES, ensuring you only accept properly registered EU businesses.
Is VAT validation mandatory for selling to Romania businesses?
EU VAT law requires that suppliers verify a customer's VAT registration before applying zero-rate treatment to intra-community B2B supplies. If you sell goods or services to a Romania business without VAT and their registration is invalid, your company may be liable for the full VAT amount plus interest and penalties. Validation is not just recommended — it is your legal due diligence obligation.
What is the standard VAT rate in Romania?
The standard VAT rate in Romania is 19% (CIF / CF). Reduced rates of 9% and 5% apply to certain goods and services such as food, books, and medical supplies. The TaxID API's /rates endpoint returns all current rates for programmatic access.
How long does Romania VAT validation take with TaxID?
For cached results (previously validated in the last 24 hours), the TaxID API responds in under 10ms. For uncached requests, the VIES SOAP call to the Romania tax authority typically completes in 100–400ms. Active (valid) numbers are cached for 24 hours; invalid numbers are cached for 1 hour to balance performance with freshness.
Does the TaxID API support VIES for Romania?
Yes. Romania is fully supported by the EU VIES system and the TaxID API. VIES validates Romania VAT numbers in real time against the Romania national tax authority's registration database. Romania has one of the most variable VAT number lengths in the EU (2 to 10 digits), which can complicate format validation. Romania has a growing IT outsourcing sector and is a significant source of B2B services across the EU.
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