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Validate United Arab Emirates Tax ID Numbers via API
When building B2B applications that serve United Arab Emirates (الإمارات العربية المتحدة), validating your customers' TRN (Tax Registration Number) is essential for B2B compliance and protecting your business from tax liability.
The TaxID API provides instant format validation and live lookup for United Arab Emirates TRN numbers via FTA (Federal Tax Authority). Every request returns the validation status with sub-100ms response times for cached results.United Arab Emirates applies a standard rate of 5% (TRN).
QUICK START
curl -H "Authorization: Bearer YOUR_API_KEY" \ http://localhost:3000/api/v1/validate/AE/100123456700003
Code examples
Choose your language. Every example validates a United Arab Emirates VAT number and returns the registration status with company details.
const res = await fetch('http://localhost:3000/api/v1/validate/AE/100123456700003', {
headers: { 'Authorization': 'Bearer YOUR_API_KEY' }
});
const data = await res.json();
// { valid: true, status: "active", company_name: "...", country_code: "AE", cached: false }
console.log(data);When to validate United Arab Emirates tax ID numbers
B2B invoicing and accounts payable
When issuing or receiving invoices from United Arab Emirates businesses, validating the TRN (Tax Registration Number) ensures the identifier is genuine before committing the transaction to your ERP. Invalid or fabricated tax IDs are a leading vector for invoice fraud and can result in rejected filings or audit penalties.
SaaS and e-commerce checkout
If your platform serves United Arab Emirates business customers, collecting and validating their TRN (Tax Registration Number) at checkout is required for accurate tax treatment, correct invoicing, and downstream reporting. An invalid tax ID at the point of sale creates a correction burden across your finance stack.
Supplier and marketplace onboarding
For procurement platforms and regulated marketplaces onboarding United Arab Emirates sellers or vendors, validating the TRN (Tax Registration Number) at registration prevents fraudulent or duplicate accounts from entering your ecosystem. Validate once at onboarding, then re-validate periodically to detect deregistrations or changes.
About United Arab Emirates VAT format (TRN)
The UAE introduced VAT at 5% in January 2018. TRNs are 15-digit numbers issued by the Federal Tax Authority. The UAE is a major hub for B2B SaaS and fintech across the Middle East and Africa (MENA) region. Businesses with taxable turnover over AED 375,000 must register.
| Field | Value |
|---|---|
| Country code | AE |
| Local name | TRN (Tax Registration Number) |
| Format | 15 digits |
| Regex pattern | ^[0-9]{15}$ |
| Example | 100123456700003 |
| VIES supported | No |
VAT rates in United Arab Emirates
United Arab Emirates applies a standard TRN rate of 5%. Reduced rates of 0% apply to essential goods and services.
| Rate type | Percentage | Currency |
|---|---|---|
| Standard rate | 5% | AED |
| Reduced rate | 0% | AED |
Frequently asked questions
What is the United Arab Emirates tax ID number format?
United Arab Emirates tax ID numbers (TRN (Tax Registration Number)) follow the format: 15 digits. A valid example is 100123456700003. The TaxID API validates the format locally and where possible checks against the FTA (Federal Tax Authority), ensuring you only accept properly registered businesses.
Should I validate TRN numbers when transacting with United Arab Emirates businesses?
Validating TRN numbers reduces fraud risk, prevents invalid identifiers from entering your accounting system, and is required by many B2B contracts and procurement platforms. While mandatory rules vary by jurisdiction, validating at onboarding is widely considered best practice — especially for SaaS, marketplace, and fintech platforms with global customer bases.
What is the standard tax rate in United Arab Emirates?
The standard tax rate in United Arab Emirates is 5% (TRN). Reduced rates of 0% 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 United Arab Emirates tax ID validation take with TaxID?
For cached results (previously validated in the last 24 hours), the TaxID API responds in under 10ms. Format validation is instantaneous. For uncached requests requiring a live lookup against FTA (Federal Tax Authority), response time is typically 100–500ms. Valid numbers are cached for 24 hours; invalid numbers are cached for 1 hour.
How does the TaxID API validate United Arab Emirates TRN numbers?
The TaxID API validates United Arab Emirates TRN numbers in two steps: first it checks the format against the official pattern (15 digits), then it queries FTA (Federal Tax Authority) where a live API is available. The UAE introduced VAT at 5% in January 2018. TRNs are 15-digit numbers issued by the Federal Tax Authority. The UAE is a major hub for B2B SaaS and fintech across the Middle East and Africa (MENA) region. Businesses with taxable turnover over AED 375,000 must register.
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