If you are a GST/HST registrant with a reporting period that begins in 2024 or later, you must file your returns electronically (except for charities and selected listed financial institutions). If ...

Sample .NET application to demonstrate e-filing through the NetFile Vendor API. To use the Vendor API, third-parties must use a Vendor ID and Vendor PIN. Contact 'filerhelp@netfile.com' to receive ...