The amount of the DTC varies by province and age of the applicant. For an adult it can currently range from $1,600 -$2,700 per year. For a child an additional $900-$1,800 per year could be expected on top of the basic amount. In other words, you can be entitled to a maximum of $,4,500 per year for an eligible child. One of the features that makes the DTC so important and life-changing is that it can be claimed retroactively up to 10 years in the past. This means that if you are only learning about the DTC now but your child has been limited in the past then you may be able to go back and claim it for past tax years and receive a refund accordingly. To get a better idea about your entitlement try out our calculator.