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№ 77 Family Law

How Child Support Is Calculated in BC: Income, Guidelines and Parenting Time

Learn the steps used in British Columbia to calculate child support: income, the table amount, parenting time and section 7 add-on expenses.

Family Law4 min readTSLBy the Treadstone Law Team · British ColumbiaUpdated November 1, 2026
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Key takeaways
  • Both the Family Law Act and the Divorce Act require child support to follow the guidelines.
  • The calculation moves from income, to the table amount, to parenting time, to add-on expenses.
  • Income is not always the number on one tax form: self-employment, corporations and under-employment can change it.

Child support in British Columbia is calculated by a method, not by a judge's guess. Knowing the steps lets you see where your numbers come from and where your facts could change the result.

Below is the usual sequence. Each step has exceptions, so treat this as a map and not as a prediction of your own result.

This article covers the law of British Columbia.

Step 1: Which law applies

Under the BC Family Law Act, parents and guardians must support their children, and orders must follow the child support guidelines. If you are applying under the Divorce Act, the court must also make the order in accordance with the applicable guidelines. Either way, the Federal Child Support Guidelines supply the tables and the method.

Step 2: Work out the payor's income

Annual income is generally taken from the Total income heading of the T1 General tax form, adjusted under Schedule III. Where income fluctuates, the court may look at the last three years. An applicant must include the other parent's tax returns for the three most recent taxation years, and the respondent must give income documents within 30 days if in Canada or the U.S., or 60 days elsewhere.

Some situations call for closer attention:

Step 3: Find the table amount

The presumptive amount is the Schedule I table amount for the payor's province, plus any section 7 expense amount. Using the BC table, you find the number of children and the income row, then take the basic amount plus a percentage of income over the row's floor. For one child and $50,000 of income, the monthly table amount is $468.

The table uses the payor's income only. If the payor earns more than $150,000, the court may apply the table or set the table amount for the first $150,000 plus an appropriate amount for the rest.

Step 4: Check parenting time

The straight table amount assumes one parent pays and the other has the child most of the time. Parenting time can change that:

Support and parenting time are separate issues. A payor cannot withhold support over parenting disputes, and a parent cannot refuse parenting time because support is behind.

Step 5: Add section 7 expenses

On a parent's request, the court may add amounts for child care tied to work, illness, disability or training; the child's share of medical and dental premiums; health costs above insurance by at least $100 a year; extraordinary school costs; post-secondary education; and extraordinary extracurricular costs.

These are shared in proportion to the parents' incomes after any contribution the child can make, and the court must account for related subsidies, benefits and tax credits. For school and extracurricular costs, extraordinary means more than the requesting parent can reasonably cover, so ordinary-sized costs are not added.

Other adjustments and next steps

A court can award a different amount to prevent undue hardship, and can depart from the guidelines where parties consent or have an agreement and reasonable arrangements exist for the child. When the court departs, it must give reasons.

Frequently asked questions

Does the same method apply under the Divorce Act and the Family Law Act?

Yes. Both require the court to follow the applicable guidelines, and the Guidelines are the same federal regulation.

What counts as a parent's income?

It starts with the Total income heading of the T1 General, adjusted under Schedule III. The court can also look at three years of income where it fluctuates, or impute income in certain situations.

How does shared parenting change the calculation?

If each parent has at least 40% of parenting time over a year, the court must consider each parent's table amount, the increased costs of shared arrangements and each parent's circumstances. It is not simply an automatic reduction.

Who pays for extras like child care or braces?

On request, the court may add section 7 expenses such as child care and orthodontics, shared in proportion to the parents' incomes.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. British Columbia laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a lawyer who practises in British Columbia. Reach us at 1-844-900-1070 or send our Team a message.

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