Federal Income Table for sponsors of parents and grandparents

You, the sponsor (and your co-signer, if applicable) must prove that you have enough income to support all the persons you’ll be financially responsible for, including yourself, once you become a sponsor.

If you’re invited to apply, you’ll have to provide proofthat you meet the income requirements for each of the 3 taxation years right before the date of your application.

http://visa.studyleader.com/article.aspx?id=431