The court expects that child support will be paid according to the Child Support Guidelines. If child support is not being paid or is less than the applicable guideline amount, you must provide a full explanation to give the court enough information to satisfy the requirements of the Divorce Act (Canada). It is very difficult to obtain a divorce when child support is less than the guideline amount. Both parents simply agreeing to the amount is not ordinarily considered to be a valid explanation.
If the court is not satisfied with your explanation, it can refuse to grant your divorce. You may want to discuss your situation with a lawyer if child support is not being paid or is less than the applicable guideline amount.