Child Benefit Online ..unravelling child benefit

ONTARIO – Child disability benefit?

My doctor has filled a child disability form in the year 2007 so we can claim the disability benefit. According to the form, my son had the disability since 2005. How far back can we claim the monthly benefit which is to be added to our existing child tax benefit? I have asked to reopen my 2005 & 2006 tax returns to claim the disability amounts.

You have up to three years to adjust a tax return, so you should get the amounts for DTC for 2005 and 2006. As far as your Child Tax Benefit, I'm not sure, you would have to check the website