Not sure about Canadian law but here in Australia its only the bio parents taxable incomes that are used to calculate CS.

It's Canada. They're far worse at transferring money for social reasons. They can create "arrears" out of whole cloth.

Refuse the request. If the judge forces the issue then provide the information. If your research indicates that you do not qualify as a common law relationship then go with that as far as any response to BM.

As a Step Dad I was told clearly by the judge that I was not a party to the case. So... I did not provide any income information. His honor's head about exploded when I refused to provide my income info then quoted him directly with "Your honor, you clearly and firmly stated that I am not a party to the case therefor my income, my assets, nor anything to do with me is relevant to the case. I respectfully refuse the demand to provide any information whatsoever. Either I am a party to the case or I am not. You nor anyone else can have it both ways."

His Honor and I tit for tatted back and forth for several minutes until he said with volume "If you say another word I will hold you in contempt!" So I did not utter another peep even when he asked me a direct question. He damned near stroked out over that one. He then informed me that if I did not provide my income information he would hold me in contempt. I just sat there not saying a word. If I spoke I was in contempt, if I did not provide my income information I was in contempt. He turned purple at that point. What he failed to notice was the envelope I had put at the corner of his bench when I took the stand which contained all of my income information.

Though the state regulations in the state where our CO was issued clearly stated that SParent income could not be considered for CS calculation the bottom 10%er idiots of the legal profession who seem to end up on the family law bench can't comprehend the rules they are charged with enforcing. Though unequivocally excluded for CS calculation purposes SParent income can be considered for applying an income credit to the NCP. His idiot Honor commented after our tit for tat that "Step Dad makes a significant income that provides an artificial standard of living for the child. Bio Dad should not be forced to participate in supporting an artificially elevated income for the child. I am awarding the maximum income reduction credit to Bio Dad of $1000/mo to reduce his exposure to having to support an elevated standard of living for the child." I laughed out loud at that ridiculous bullshit. CS went up by 40% even with the income reduction credit. A $1000 reduction in monthly income for CS calculation purposes only relieved the Sperm Idiot from $50/mo maximum CS for his actual income.

The judge just about shit a brick when I broke out in guffaws at his ruling.

So, don't provide shit for nothing at the request of BM or her attorney, research and know the rules and do not let even the bottom 10%er of the legal profession family law judge give you shit without barring their ass on their own ignorance. Then of course provide what they ask for but only when you have had enough fun at their expense. }:)

As for Canadian family law. As with any legal situation, consult your attorney. That is what we do when we have to smack the Sperm Clan in Oregon courts.

Most of all ..... have fun!

Good luck.