"Basic benefit:
- The basic benefit is $1,340 ($111.66 a month) for eachchild under age 18 (the basic benefit is different for residents ofAlberta, see the note below).
- There is a supplement of $93 ($7.75 a month) for your third and each additional child.
- Wesubtract a benefit reduction from this amount if your family net incomeis more than $38,832. For a one-child family, the reduction is 2% ofthe amount of your family net income that is more than $38,832. Forfamilies with two or more children, the reduction is 4%." (CRA website quote)
My understanding is your CCTB will be reduced to nil when the family net income is over $105,832. (=$1,340 / 2% + $38,382). You can always call CRA @ 1-800-959-8281 to find out how much exactly you are entitled to.