应该是可以的：
http://www.netfile.gc.ca/fq_ccsscdlmntn-eng.html
Removal of the exclusion for Newcomers
Starting in February, 2014 , newcomers to Canada can take advantage of our electronic filing options. The taxpayer must have a date of entry into Canada during the tax year they are filing for. In addition, they must have one of the following in order to file their return electronically:
a valid social insurance number (SIN);
a temporary social insurance number starting with a 9; or
a temporary tax number (TTN) starting with a 01 or 03.
