E-Invoicing Belgium API Reference

1. API URLs to be used/whitelisted

For API requests, use the below information.

1.1 Sandbox (QA, Testing)

API Type	Hostname	IP	Port
API	https://api-sandbox.eu.cleartax.com		443

Note: The above URL is for API requests only. The corresponding frontend web application URL where you can log in and verify the data is https://app.eu.cleartax.com/

1.2. Production Environment

API Type	Hostname	IP	Port
API	https://api.eu.cleartax.com		443

Note: The above URL is for API requests only. The corresponding frontend web application URL where you can log in and verify the data is https://app.eu.cleartax.com/

2. SSL/TLS Certificate to be downloaded and installed

Note: This is a multidomain SAN (Subject Alternative Name) certificate, utilized across all products within the Clear ecosystem and is common for both sandbox and production environments.

For hostname	Valid up to	Certificate
*.clear.in *.cleartax.in	23rd April 2026	_.clear.in.cer
Intermediate	3rd May 2031	Go Daddy Secure Certificate Authority - G2.cer
Root	1st Jan 2038	Go Daddy Root Certificate Authority - G2.cer

TLS Versions Supported: TLS 1.2.

For detailed information on how to download the host, intermediate, and root certificates, you can always refer to How to get SSL Certificate. Alternatively, you can also download the certificates directly from the below links.