Your mom is the one that needs to apply for the visa (remember it's her visa) you're just inviting her, that's why you need to send her an invitation letter and some proof that you and your husband meet the minimum Low Income Cut Off. It says in the cic that visa office in Russia is in Moscow.
Notice of assessment- That's what the CRA sends us every year after we filed our income tax return, it will show your annual income, tax deducted etc etc.
Or you could also send recent t4's or pay stub. I think you should really read the whole Supervisa link in the cic website. You will also see what you need to include in the invitation letter. And all the application forms your mom needed to complete.
Someone also posted a sample of their invitation letter in this forum, just try to find it, browse the pages. It will give you more idea.
Goodluck on your application!
Notice of assessment- That's what the CRA sends us every year after we filed our income tax return, it will show your annual income, tax deducted etc etc.
Or you could also send recent t4's or pay stub. I think you should really read the whole Supervisa link in the cic website. You will also see what you need to include in the invitation letter. And all the application forms your mom needed to complete.
Someone also posted a sample of their invitation letter in this forum, just try to find it, browse the pages. It will give you more idea.
Goodluck on your application!