This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Gravity Forms BSN


This plugin adds a Gravity Forms input mask and validation for BSN/Sofinumbers, the validation is based on the ’11 proef’ (Dutch)


Download the plugin and add it to /wp-content/plugins/ or download directly via the WordPress plugin repository

Contributors & Developers

“Gravity Forms BSN” is open source software. The following people have contributed to this plugin.


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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • First public release of the plugin