Next.js EU VAT Validation

Add real-time EU VAT number validation to your Next.js app. Validates against VIES and returns company details.

Quick Start

1. Get your API key at eurovalidate.com
2. Clone and install

   git clone https://github.com/eurovalidate/nextjs-vat-validation.git
   cd nextjs-vat-validation
   npm install

3. Configure environment

   cp .env.example .env.local
   # Edit .env.local with your EuroValidate API key

4. Run

   npm run dev
   # Open http://localhost:3000

What This Does

• React form (app/page.tsx) with VAT number input and real-time validation
• API route (app/api/validate/route.ts) that calls EuroValidate server-side (API key stays secret)
• Displays company name, address, confidence level, and response time

Key Code

API Route (app/api/validate/route.ts):

import { EuroValidate } from "@eurovalidate/sdk";

const eurovalidate = new EuroValidate(process.env.EUROVALIDATE_API_KEY!);

export async function POST(request: NextRequest) {
  const { vatNumber } = await request.json();
  const result = await eurovalidate.vat.validate(vatNumber);
  return NextResponse.json(result);
}

React Component (app/page.tsx):

const res = await fetch("/api/validate", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ vatNumber }),
});
const data = await res.json();
// data.data.valid, data.data.company_name, etc.

API Response

{
  "success": true,
  "data": {
    "valid": true,
    "vat_number": "NL820646660B01",
    "country_code": "NL",
    "company_name": "COOLBLUE B.V.",
    "company_address": "WEENA 00664 3012CN ROTTERDAM"
  },
  "meta": {
    "confidence": "HIGH",
    "source": "vies_live",
    "cached": false,
    "response_time_ms": 47
  }
}

Test VAT Numbers

VAT Number	Country	Company
NL820646660B01	Netherlands	Coolblue B.V.
FR40303265045	France	Google France

Links

• EuroValidate API Docs
• Sign Up
• Node.js SDK

License

MIT