The deadline for most Canadians was set for the end of the month.
However, due to a human error, incorrect notification was sent to tax preparers last week indicating the deadline was May 5.
A spokesman for Revenue Minister Kerry-Lynne Findlay says the minister has directed her officials to ensure no Canadians are penalized for the CRA’s error.
Canadians who file their taxes before May 5 will not face any penalty.
CRA extended the deadline to May 5 last year after the Heartbleed bug forced a five-day shutdown of its E-file and Netfile services.