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Child Support Calculator for Canada

Calculates the monthly child support payment amount based on the paying parent's province, income, number of children, and custody arrangement, using official Federal and Quebec child support guidelines.

Your details

Select the province or territory where the parent who will pay child support resides. This determines which child support table applies.

Enter the paying parent's gross annual income before taxes. This is the amount used to look up the base table amount.

Enter the number of children for whom support is being calculated. The table amount is determined per child and then summed.

Select the arrangement that best describes the paying parent's time with the child(ren). Shared custody means the child lives with the paying parent at least 40% of the time.

Optional: Enter the estimated monthly total for special expenses like childcare, medical premiums, or post-secondary education. These are shared in proportion to incomes.

Optional: Required for shared custody calculations and for apportioning special expenses. Enter the gross annual income.

Result

Estimated Monthly Child Support Payment CA$1,323.81

The final estimated monthly payment amount, incorporating the base table amount, special expenses, and adjustments for shared custody.

How it is calculated

Base Table Amount (per child) The monthly support amount for one child, based on the paying parent's income and the official table for their province.
CA$600.00
Total Base Table Amount The sum of the base amounts for all children.
CA$1,200.00
Paying Parent's Share of Special Expenses The portion of special expenses the paying parent is responsible for, based on the proportion of their income to the total parental income.
CA$123.81
Shared Custody Adjustment For shared custody, the payment is typically the set-off amount (paying parent's table amount minus receiving parent's table amount) plus the paying parent's share of special expenses. For low-income payers, the full amount may be set to zero.
CA$0.00
Keep in mind
  • This calculator provides an estimate based on simplified versions of the official Federal and Quebec child support tables. The actual tables contain many more income intervals and specific values.
  • For Quebec, the calculation is based on the provincial guidelines which differ from the Federal guidelines. The table used here is a simplified representation.
  • Special expenses must be proven as 'extraordinary' and may include childcare, medical/dental insurance premiums, uninsured health costs, and post-secondary education costs.
  • The shared custody adjustment uses the set-off method (paying parent's table amount minus receiving parent's table amount) as per the Federal Child Support Guidelines, Section 9.
  • This calculator does not account for split custody (different children with different parents) or situations where a parent is already paying support for children from another relationship.
  • The official tables provide separate amounts for 1, 2, 3, 4, 5, and 6+ children, which are not simple multiples of the one-child amount. This calculator multiplies the one-child amount for simplicity. For precise amounts, consult the official tables directly.

Indicative result, calculated from the details and the rules listed below. It does not replace an official calculation or advice from a professional.

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Child Support Agreement

How Child Support is Calculated in Canada

Child support in Canada is primarily determined by the Federal Child Support Guidelines, which apply in all provinces and territories except Quebec, which has its own similar guidelines. The core principle is that both parents must financially support their children according to their respective incomes. The calculation starts with a basic table amount, which can be adjusted for special expenses and custody arrangements.

The Basic Table Amount

The foundation of child support is the ‘table amount.’ Each province and territory has an official table published by the Department of Justice. You find the paying parent’s annual income on the left side and read across to find the base monthly support amount for one child. For multiple children, you add the amounts for each child together. For example, in Ontario, a parent earning $65,000 would owe approximately $600 per month for one child. For two children, the amount would be approximately $600 + $500 = $1,100 per month.

Special or Extraordinary Expenses

On top of the table amount, parents may need to share ‘special or extraordinary expenses.’ These are costs that exceed what is considered normal and can include:

  • Childcare expenses that enable a parent to work or attend school
  • Medical and dental insurance premiums for the child
  • Uncovered health-related costs, like orthodontics or therapy
  • Extraordinary educational expenses or tutoring
  • Costs for post-secondary education
  • Extracurricular activities that are significant in cost

These expenses are shared by the parents in proportion to their respective incomes. If the paying parent earns $70,000 and the receiving parent earns $30,000, the paying parent would be responsible for 70% of these special expenses.

Shared Custody Adjustments

If the child lives with the paying parent at least 40% of the time (often called shared custody), the support amount is typically calculated using the set-off method. This means you calculate the table amount each parent would pay if the other were the paying parent, based on their respective incomes. The paying parent’s obligation is the difference between these two amounts. For example, if Parent A would pay $800 and Parent B would pay $300, Parent A would pay $500. For low-income payers in a shared custody situation, the court may order a nominal amount or even zero.

Example Calculation

Consider a parent in Ontario earning $85,000 with two children. The primary table amount might be $800 for the first child and $700 for the second, totaling $1,500 per month. If there are $300 in monthly special expenses and the other parent earns $50,000, the paying parent’s share would be 85,000 / (85,000 + 50,000) = 63%. That's an additional $189. The total before custody adjustment is $1,689. If custody is shared, you calculate the receiving parent's table amount (based on $50,000 income for two children, say $400 + $300 = $700). The set-off amount is $1,500 - $700 = $800. Adding the special expenses share ($189) gives a final payment of $989 per month.

Next Steps: Formalizing the Agreement

Once you have estimated the support amount, it is crucial to formalize the agreement legally. A Child Support Agreement documents the payment amount, frequency, and how special expenses will be handled. This provides clarity and enforceability for both parents. For court-ordered support, you may need to file a Child Support Application Letter as part of your application.

Frequently asked questions

How often are the child support tables updated?

The Federal Child Support Tables are updated periodically by the Department of Justice, typically every few years to reflect changes in the cost of living. The current tables were last updated in 2017. Quebec updates its tables separately.

What if the paying parent lives in a different province than the children?

You generally use the child support tables for the province where the paying parent resides. However, inter-provincial enforcement can be complex, and legal advice is recommended in such cases.

Does child support cover things like school supplies or clothes?

The basic table amount is intended to cover ordinary day-to-day expenses like food, shelter, clothing, and basic school supplies. Extraordinary costs for items like special school programs, high-end electronics, or significant wardrobe expenses may be considered special expenses and shared separately.

What happens if the paying parent's income changes?

Either parent can apply to the court to have the child support amount reviewed and changed if there has been a significant change in circumstances, such as a substantial increase or decrease in income. Many agreements include a review clause for this purpose.

Is the calculated amount guaranteed to be what the court orders?

No. This calculator provides a reliable estimate based on the guidelines, but a judge has final discretion. The amount can be adjusted upward or downward in specific situations, such as undue hardship, high parenting costs due to distance, or a child's special needs.

How is child support treated for tax purposes in Canada?

Child support payments are neither taxable income for the recipient nor tax-deductible for the payer. This is a key difference from spousal support.