The Tax Data API by Apilayer is a comprehensive solution designed to provide instant VAT number and tax validation across the globe. It allows businesses, particularly those operating cross-borders, to meet international tax obligations effortlessly. The API supports a wide range of operations including but not limited to, global tax data lookup, automated VAT number validation, and precise tax rate calculations. Furthermore, its robust functionality is accessible via a simple yet powerful interface with extensive documentation available here.

The Tax Data API offers a multitude of benefits:

• Instant global VAT number validation.
• Accurate tax data across hundreds of countries.
• Automated VAT number validation to ensure compliance.
• Precise tax rate calculations for accurate costing and invoicing.
• Robust API with an intuitive and easy to use interface.

Here is a simple JavaScript code example that illustrates how to make a call to the Tax Data API:

const axios = require('axios');

const VAT_NUMBER = '<your_vat_number>';

axios.get(`https://apilayer.com/api/validate?access_key=<your_access_key>&vat_number=${VAT_NUMBER}`)
.then(response => {
    console.log(response.data);
})
.catch(error => {
    console.error('API request encountered an error', error);
});

This code uses the axios library to send a GET request to the Tax Data API endpoint for VAT validation. The response is logged in the console. Make sure to replace '<your_access_key>' and '<your_vat_number>' with your actual API key and the VAT number you want to validate respectively.