My common law spouse and I have 2 young children together and I have a son from a previous marriage living with us. My spouses 18 year old son is moving back with his mother. He is still trying to finish high school. I did the calculations and her total income including income tax returns and baby bonus isn't much less then ours. We currently pay $107, the difference in support amounts as he has a 16 year old daughter with the mother as well. The amount would go up to over $500 month + 60% of all her hockey and school trips. We declared bankruptcy over the summer and have no savings, leaving us with $30 at the end of the month. We can't afford a lawyer and if child support ends up being more than $130 a month we'll have to split up the family and I'll just be another single mom living off child support and Baby bonus. I want to declare undue hardship but I'm worried about not having legal advise. I live in Ontario, and I'm sorry for such a long story!!