Bulk check of BTW numbers via API - Nalog.nl BV
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Bulk verification of BTW numbers by API

With our API you can check an unlimited number of BTW numbers.

Checking BTW numbers for validity is necessary in order to get VAT refund.

How does work FIRE?

At the moment when the manager creates an account (in CRM, ERP or any similar program) and drives in the BTW number there, our program automatically checks the number for validity. If the number is not valid, then the manager receives the message "Enter another number". And if the number is correct, then the program will send an answer.

To activate the service, fill out the form below.

Checking the first 50 numbers is free! To check a large number of numbers, subscribe to a subscription.

€ 9 per month for 1000 queries per day or € 19 per month for unlimited queries.

After payment, you will receive your personal code, which will need to be passed as a parameter in the request. You now have access to the automated number verification system.

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  • ✓ Valid number ✕ Invalid number
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    Sample API request in GO language


    Sample API request in Javascript


    Sample API response

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