What should i do if my spouse passed away and i dont have access to her A.I.S.H. income or social insurance number

I am sorry to hear about the passing of your wife. 

 

Please contact CRA to see what they suggest so that you can complete her final return. 

 

If you have a copy of her tax return from last year, or the notice of assessment you will find her SIN number there. 

 

You can find her A.I.S.H. income if you have access to her bank account- you can verify the amount deposited each month.