No. If a taxpayer dies without a will and he has any amount of assets, a Final return must be filed and a representative has to sign it. It is not a regular T1-general return.
Without a will, there is no legal representative yet > so an affidavit has to be submitted to CRA to allow a family member or a relative to be a tax representative. This affidavit is governed by the province of the deceased.
Any assets or bank fund left cannot be distributed without a trust return. A court has to point an administrator since there is no executor.
This link has information regarding the affidavit and the instate situation:
https://www.canada.ca/en/revenue-agency/services/tax/individuals/life-events/what-when-someone-died/...
I hope this was helpful
