The CRA provides numerous reminders to charities to file the T3010 Registered Charity Information Return.  There used to be 2000 Canadian charities that did not file their T3010 and were revoked for non-filing.  As a result of the vigilant system CRA has reduced the typical number of charities not filing their T3010 to approximately 600 per year. 

According to CRA here are the reminders that they to registered charities provide:

http://www.cra-arc.gc.ca/chrts-gvng/chrts/prtng/rtrn/t3010vrvw-eng.html 

Reminders to file

The Canada Revenue Agency will send you these reminders to file your return if you haven’t already done so:

  • three months after the end of your fiscal period, we will send a TX11D, Reminder to Registered Charities to File Return
  • four months after the end of your fiscal period, if we have your email address, we will send an email reminder
  • seven months after the end of your fiscal period, we will send a T2051A, Notice of Intention to Revoke a Charity's Registration
  • eight months after the end of your fiscal period, we may try to contact a representative of your charity by telephone to remind them to file the return
  • ten months after the end of your fiscal period, we will send a T2051B, Notice of Revocation of Charity's Registration, and Form T2046, Tax Return Where Registration of a Charity is Revoked