Package for validating VAT numbers & retrieving VAT rates (from ibericode/vat-rates) in Go.

Use go get.

go get github.com/dannyvankooten/vat

Then import the package into your own code.

import "github.com/dannyvankooten/vat"

VAT numbers can be validated by format, existence or both. VAT numbers are looked up using the VIES VAT validation API.

package main

import "github.com/dannyvankooten/vat"

func main() {
  // Validate number by format + existence
  validity, err := vat.ValidateNumber("NL123456789B01")

  // Validate number format
  validity, err := vat.ValidateNumberFormat("NL123456789B01")

  // Validate number existence
  validity, err := vat.ValidateNumberExistence("NL123456789B01")
}

This package relies on a community maintained repository of vat rates. We invite you to toggle notifications for that repository and contribute changes to VAT rates in your country once they are announced.

To get VAT rate periods for a country, first get a CountryRates struct using the country's ISO-3166-1-alpha2 code.

You can get the rate that is currently in effect using the GetRate function.

package main

import (
  "fmt"
  "github.com/dannyvankooten/vat"
)

func main() {
  c, err := vat.GetCountryRates("NL")
  r, err := c.GetRate("standard")

  fmt.Printf("Standard VAT rate for NL is %.2f", r)
  // Output: Standard VAT rate for NL is 21.00
}

MIT licensed. See the LICENSE file for details.