The Canadian Embassy is not in a position to provide advice on taxation matters nor answer specific queries on individual tax returns.
There are two methods of obtaining the Revenue Canada tax forms. You can telephone Revenue Canada on 613-952-3741. They will accept a collect call from Poland. Their fax number is: 001-613-941-2505.An electronic version of all tax forms and publications can be downloaded from: Canada Revenue Agency
Should you require a Visitor Tax Refund, the electronic version can be downloaded:
Visitor Tax Refund form
You may also wish to visit the Revenue Canada website: Canada Revenue Agency
The Government of Canada and Poland have concluded a Convention for the avoidance of double taxation with respect to taxes on income for persons who are residents of one or both of the Contracting States. Please visit Department of Finance Canada for more details on the Convention.