Is support tax deductible?
No, child support is normally not tax deductible by the payor, nor does the recipient include it as taxable income.
If one party leaves the house and children during this process, will they have to pay child support during this time?
If the children reside with a spouse the majority of the time, the party that does not have the children will be required to pay child support. If the children reside with you half of the time, you may still be required to pay child support to your spouse if your income is greater than your spouse’s income, though the amount of child support may be at a reduced level.
What about the child’s college/university costs?
In many cases (but not all), tuition and living expenses while attending post-secondary education are an extraordinary expense for which both parents are responsible. You and your former spouse should consider the financial contribution the child can make towards their university expenses (think summer job money, scholarships, bursaries, student loans like OSAP), and then divide the difference between the parents evenly or in proportion to their incomes.