Validating VAT numbers in Exact Online
The connector automatically validates the VAT number and address details of your customers abroad. We inform you about incorrect VAT numbers so you know for sure whether that customer is a business. This helps you avoid possible additional tax assessments because no VAT was wrongly paid on the goods and services you supplied.
- Avoid additional tax assessments
- Save time & prevent errors
- Installed within 10 minutes
Automatic VAT number check

Certainty that these are business supplies
When you supply goods or services to a customer, it is important to know whether that customer really is a business. You will receive an additional tax assessment if a check of the records shows that your customer is not a business. In other words, VAT must then still be paid on the goods and services you supplied.

Fast validation of VAT numbers
To be sure that you are dealing with a business, it is useful to be able to check their VAT identification number. You can do this on the website of the Tax Authorities, but it is not practical to enter a number there manually every time. The connector does this fully automatically for you.

Several check moments for certainty.
Our VAT number validator works at five different moments. First, the app performs a one-time overall check after the initial installation. In addition, the validator checks the details when you create a new CRM relation, modify a CRM relation, or record a new transaction linked to a CRM relation.
Why choose our connector?
Cancellable monthly
Flexible subscription without long-term commitments.
Quick installation
The connector is ready to use within 10 minutes.
Official Exact Online partner
The connector has been tested and approved.
Professional support
Installation help and tailored SLA levels.
We are an official partner of
Subscription options
Daily check
Every unique VAT number is checked daily
- VAT numbers
- Company names
- Addresses
- Up to 500 VAT numbers (more on request)
Weekly check
Every unique VAT number is checked every week
- VAT numbers
- Company names
- Addresses
- Up to 250 VAT numbers
4-weekly check
Every unique VAT number is checked every 4 weeks
- VAT numbers
- Company names
- Addresses
- Up to 50 VAT numbers
Additional modules
Alle modules de eerste 90 dagen gratis!
Professional support
Call in our installation help
Install the connector yourself with ease, no technical knowledge required. Need help? We are ready to support you, so you can get started right away and get the most out of it.
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Support tailored exactly to what you deserve. Every subscription includes the Essentials package as standard for reliable support by e-mail. Want more service? With Plus and Premium you get more extensive support, including telephone support.
Custom solutions
With our custom development process we build solutions that match the needs of your business. Our experts are happy to help you automate your accounting processes.
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CertifiedFrequently asked questions
During the first synchronisation, all VAT numbers of your relations in Exact Online are checked through the European Commission's VIES system. After that, the connector validates automatically when a relation is created or changed and during ICP transactions. Invalid numbers are reported to you right away.
You can, but it costs you time with every new customer. And you have to repeat it periodically too, because VAT numbers can be revoked. Our connector does this automatically and continuously, so you no longer have to think about it.
The validator automatically tries again. Temporary unavailability of the VIES system is caught, so you do not get error messages for numbers that are in fact perfectly valid.
The validator makes sure the VAT status of your customers is correct. Combine that with our module for country-specific VAT codes and your international VAT return becomes a lot easier.
Standalone tools only check on request. Our connector is integrated in Exact Online and runs continuously in the background. As soon as a relation is created or changed, the VAT number is validated automatically. No extra steps, no separate tools.
Yes. Every validation result is recorded with date and time and you receive a report by email. That is your proof during a possible check by the tax authorities that you have met your verification obligation.