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Child Support

Child support is not optional. It is not a favour one parent does for the other. It is a legal right that belongs to your children, full stop. The law in BC is clear on this, and courts take it seriously.

What is less clear to most parents is how child support actually works: how it is calculated, what it covers, when it changes, and what happens when circumstances shift. That is what this article is for.

The core principle: child support is calculated based on a parent's income and the parenting arrangement. It is not negotiable in the way that some other family law issues are. Both parents have an obligation to financially support their children, regardless of their relationship with each other.

VIDEO: CHILD SUPPORT IN BC

The law in British Columbia is clear. Children need to be supported and they will be supported based upon their parents’ income. 

The three parenting arrangements and how they affect child support

Arrangement 1: One parent has primary care (60% or more of the time)

When one parent has the children living with them 60% of the time or more, that parent is considered the primary caregiver. Child support flows from the other parent, the one with less time, to the primary caregiver.

The amount is calculated from the paying parent's gross annual income using the Guidelines table for BC. The more a paying parent earns, the higher the table amount.

This is the most straightforward calculation. The primary caregiver's income is not part of the basic support equation in this arrangement. Only the paying parent's income drives the number.

Arrangement 2: Shared parenting (each parent has 40% to 60% of the time)

Shared parenting means both parents have the children roughly half the time, generally somewhere between 40% and 60% each. Many people assume this means no child support is paid. That is a common misconception.

In a shared parenting arrangement, child support is calculated differently. Both parents' incomes are taken into account. In most cases, a set-off approach is used: the Guidelines amount for each parent is calculated separately, and the higher-earning parent pays the difference to the lower-earning parent.

The rationale is straightforward. Equal time does not mean equal financial capacity. A parent earning $120,000 per year and a parent earning $45,000 per year do not have equal ability to house, feed, and provide for children in their care. The set-off reflects that reality.

Shared parenting does not automatically mean zero child support. If there is a meaningful income gap between the parents, the higher earner will almost certainly pay something.

Arrangement 3: Split parenting (children split between households)

Split parenting is a less common arrangement that applies when there are two or more children, and each parent is the primary caregiver for at least one of them. For example, one child lives primarily with one parent, and a second child lives primarily with the other.

In this arrangement, each parent is technically both a payor and a recipient. The calculation produces a set-off, and the parent whose table amount is higher pays the net difference to the other.

Split arrangements can produce some counterintuitive results. The amounts involved, and the fairness of the overall arrangement, are worth reviewing with a lawyer before you finalize anything.

Section 7 expenses: the costs on top of the table amount

The table amount covers the basics: the day-to-day cost of raising a child in the paying parent's absence. But children have expenses that go beyond the basics, and the Guidelines recognize this through what are called Section 7 special or extraordinary expenses.

These expenses are shared between the parents in proportion to their incomes, not split 50/50. So if one parent earns twice as much as the other, they pay roughly twice as much of the Section 7 expenses.

Section 7 expenses include:

  • Child care costs incurred because the primary caregiver works, studies, or is ill or disabled
  • Medical and dental insurance premiums that cover the child
  • Health-related expenses not covered by insurance, including orthodontics, counselling, speech therapy, and glasses
  • Extraordinary expenses for primary or secondary school education, such as private school fees or tutoring
  • Post-secondary education expenses
  • Extracurricular activities, where the expense or the activity itself is extraordinary


The word "extraordinary" does it a lot of work in this list. Not every extracurricular activity qualifies. The activity needs to be either unusually expensive or particularly important given the child's needs and the family's spending history. A weekly soccer registration is different from elite competitive hockey.

Section 7 expenses are meant to be agreed upon between parents or decided by a court. Without an agreement, disputes about these costs are common. Getting them addressed clearly in your separation agreement saves significant friction later.

Income: the number everything else depends on

Child support is income-driven. That makes income the most contested variable in most child support disputes. What counts as income, how it is calculated for someone who is self-employed, and what happens when a parent earns inconsistently or appears to be hiding income are some of the most complex questions in BC family law.

Income for child support purposes is not always the same as tax return income

The Guidelines define income in specific ways. For an employed parent with a consistent salary, income is generally straightforward. For a self-employed parent, a business owner, a commissioned salesperson, or someone with investment income, the calculation requires more scrutiny.

Courts can also impute income to a parent, meaning they can assign an income level higher than what the parent claims, if they believe the parent is voluntarily underemployed, has unreported income, or is deliberately suppressing earnings to reduce support obligations.

If your ex has suddenly reduced their income around the time of separation, or claims to be earning far less than their lifestyle would suggest, do not accept their numbers at face value. This is worth investigating with legal help.

How long does child support last, and when does it change?

Child support does not end automatically when a child turns 19. In BC, the obligation to pay support can continue past the age of majority if the child remains a dependent, for example because they are in full-time post-secondary education or have a disability that limits their ability to become financially independent.

Support also does not stay fixed forever. It is meant to reflect current circumstances. Incomes change, parenting arrangements change, and children's needs change. A child support amount set when a child is seven may look very different from what is appropriate when that child is sixteen.

Common triggers for reviewing child support:

  • A significant change in either parent's income
  • A change in the parenting arrangement that shifts the percentage of time with each parent
  • A child turning 19 and whether they remain a dependent
  • A child who was previously in post-secondary education completing their program
  • A change in Section 7 expenses such as new child care costs or the end of orthodontic treatment

Most separation agreements should include a process for annual income disclosure between parents, so that support can be updated without requiring either party to go back to court. If your agreement does not have this built in, consider getting it added.

Not sure what your child support situation looks like?

Book a consultation with Pathway Legal. Real legal guidance, not a sales pitch. Our initial consultation comes with a money-back guarantee on the consultation fee.

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Ask Journey – Child Support FAQ
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🐾 Ask Journey

Ask Journey

Child Support

Real questions. Straight answers. No legal jargon required.

Yes. Child support obligations in BC apply to all parents, whether they were married, in a common-law relationship, or never lived together at all. What matters is the parental relationship, not the relationship between the adults. If you have a child together, support obligations exist.

You can agree to an amount, but it needs to meet the minimum set by the Guidelines. A court will not enforce a child support agreement that falls below the table amount without a good reason. Parents cannot contract out of the Guidelines to the detriment of the children. If your situation is unusual and you believe a departure from the Guidelines is appropriate, talk to a lawyer before you finalize anything.

The federal government publishes child support tables that are publicly available online. You can look up an amount based on the paying parent's gross income and the number of children. What the tables cannot tell you is how income is calculated for a self-employed parent, a parent with variable income, or a parent who is hiding income. That is where a lawyer earns their fee. If the numbers are straightforward, the calculation is simple. If someone's income is complicated, you need professional help.

Without knowing the exact incomes, we cannot give you a number here, but the general approach is this: take the Guidelines table amount as if you were the only paying parent, then subtract what the other parent would owe if the situation were reversed. The difference is typically what you pay. That said, courts also have discretion in shared parenting arrangements to depart from a strict set-off if it would be inappropriate given the circumstances. A consultation with one of our lawyers will give you a realistic picture based on your actual numbers.

The end result is similar: a binding decision you are required to follow. The difference is who is in charge of the process. In court, the judge sets the agenda, the schedule, and the rules. In arbitration, you and your ex (through your lawyers) have far more say in how the process unfolds. You choose the arbitrator, often someone with deep family law expertise. You set the timeline. You define what issues are in scope. It tends to be faster, more private, and more predictable than court.

A teenager's preference carries weight in parenting arrangement decisions, particularly as they get older. The Family Law Act in BC requires that children's views and preferences be considered, with weight given based on their age and maturity. If a parenting arrangement changes as a result of a child's preference, that can in turn affect the child support calculation. Support follows the arrangement. If the arrangement shifts meaningfully, support should be revisited.

Not automatically. Private school fees can qualify as a Section 7 expense, but they are not automatically included. A court will look at whether private school is necessary to meet the child's needs, what the family's financial situation is, and whether both parents agree or agreed at some point. If you are being asked to contribute to a school you did not choose and cannot afford, that is worth getting legal advice on before you agree to anything or before an order is made.

They get revisited. Child care costs change as children get older. Extracurricular activities change. Post-secondary costs arrive eventually. Section 7 expenses should be built into your separation agreement in a way that creates a clear process for handling new expenses as they arise, rather than requiring you to negotiate each one from scratch. A good agreement will set out how expenses are shared, how they are documented, and what happens when parents disagree.

Self-employment income is one of the most frequently disputed issues in child support matters. The Guidelines require disclosure of financial documents, including tax returns, corporate financial statements, and business records. A lawyer can help you request proper disclosure, and if the numbers still do not add up, there are ways to challenge them, including by asking a court to impute income. You are not required to simply accept what your ex reports.

Child support can be varied when circumstances change materially. A job loss, a promotion, a new business, retirement, a significant pay cut: any of these can be grounds to revisit the support amount. The obligation does not disappear when income drops, but it can be adjusted. The key is that the change needs to be real and ongoing, not temporary. And the process for varying support requires either an agreement between the parents or a court order. You cannot unilaterally reduce what you pay.

It can. Once a child reaches the age of majority, whether support continues depends on whether they are still a dependent. A child in full-time post-secondary education is generally still considered a dependent under BC law, meaning the support obligation does not simply end. The amount and how it is paid can look different for a university student than for a younger child, and post-secondary costs themselves may be addressed as a Section 7 expense. This is worth sorting out before your child starts school, not after.

It depends on how the agreement was made and what it says. An informal agreement, a text message, a verbal arrangement, even a written document that was not properly drafted, may not be enforceable as written. And if the amount is below what the Guidelines require, a court could override it regardless. If you have an informal arrangement that has been working, that is a good sign. But it is worth having a lawyer review it to make sure it will hold up and that both of you are protected if circumstances change.

No. Child support belongs to the child, not to the parents. Parents cannot waive a child's right to support on the child's behalf. A court will not enforce an agreement that purports to waive child support entirely, because that agreement is not in the child's best interests. Parents can agree to specific amounts and arrangements within the Guidelines, but they cannot agree to nothing.

There are real enforcement mechanisms available to you. In BC, the Family Maintenance Enforcement Program (FMEP) is a provincial program that can enforce child support orders. They have tools including wage garnishment, seizure of tax refunds, suspension of driver's licences and passports, and reporting to credit bureaus. You do not need to chase your ex yourself. Registering with FMEP puts the enforcement machinery to work on your behalf. A lawyer can help you register and advise you on next steps if the arrears are significant.

It can. Child support is calculated based on the actual parenting arrangement, not necessarily what is written in an old order. If the arrangement has changed significantly, the support amount should reflect that. An order that no longer matches reality is one that should be updated, both to reflect the parenting arrangement and to ensure the support amount is correct. Living with an outdated order creates problems for both parents.

If your income has genuinely changed, or if the original calculation was incorrect, yes, you can apply to vary the support order. Child support is meant to reflect current circumstances. If you are paying an amount based on income you no longer earn, that is a real problem worth addressing. What you cannot do is unilaterally reduce what you pay without a court order or a written agreement from the other parent. Pay what is ordered while you pursue the variation, and get legal advice on how to move the application forward efficiently.

You do not need to litigate. But you do need to get it right, and getting it right is harder than it looks. The Guidelines seem simple until you factor in self-employment income, shared parenting percentages, Section 7 expenses, and what happens when things change. A lawyer can review your situation, confirm the numbers are correct, and help you put together an agreement that holds up. We see far more conflict arise from poorly drafted agreements than from situations that had good legal advice at the start.

This article is for general informational purposes only and does not constitute legal advice. Family law is fact-specific and the law changes. Reading this does not create a lawyer-client relationship with Pathway Legal. For advice about your situation, consult a qualified BC family law lawyer.