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In canada, the child support is mandatory, you hu*****and must pay. There is a calculation table for the child support amount based on the parents' annual income. You can apply for "deduction from the source", so the pay check will be sent to you directly from his employer. Your hu*****and has to pay until your child turns 18. There is no way you hu*****and can avoid the child support except he leaves Canada.

You may also ask your hu*****and to pay spouse support, if you can prove that your marriage has jeopardized your career.