Back Child Support in British Columbia: 2026 Guide to Arrears, Enforcement & Cancellation

Back child support in British Columbia refers to unpaid amounts that accumulated under a child support order or filed agreement, known legally as arrears. As of May 2026, unpaid arrears accrue interest at 4.45 percent, reviewed every three months, and the BC Family Maintenance Agency (BCFMA) can enforce collection through wage garnishment, driver's licence suspension, and passport denial once arrears reach $3,000. Courts cancel arrears only when continued enforcement would be "grossly unfair" under BC Family Law Act § 174.

Key Facts: Back Child Support in British Columbia

What Is Back Child Support in British Columbia?

Back child support in British Columbia is the total of unpaid child support payments that have come due but were not paid, legally called arrears. Under BC Family Law Act § 174, arrears accumulate under a court order or an agreement filed in court, and each missed payment becomes an enforceable debt. As of May 2026, the BC Family Maintenance Agency charges 4.45 percent interest on outstanding arrears.

Arrears are distinct from ongoing support. Ongoing support is the monthly amount currently owed under the Federal Child Support Guidelines, while arrears are the historical unpaid balance that has crystallized into a debt. Once a payment is due and unpaid, it is owed to the child and the recipient regardless of the payor's changed circumstances. The debt does not disappear because a child turns 19 (the age of majority in British Columbia) or because the parents reconcile. A recipient parent can pursue arrears even after the child reaches adulthood, a principle the Supreme Court of Canada confirmed in Michel v. Graydon, 2020 SCC 24, which examined the BC Family Law Act and found no jurisdictional bar to claiming retroactive child support after the child becomes independent.

How Does the BCFMA Enforce Child Support Arrears?

The BC Family Maintenance Agency (BCFMA) enforces past due child support at no cost to families, processing roughly 33,500 payments monthly and disbursing over $200 million annually to about 45,000 families and 58,000 children. The agency, formerly the Family Maintenance Enforcement Program (FMEP), can garnish wages, attach bank accounts, intercept federal tax refunds and employment insurance, register liens against property, and report unpaid maintenance to credit bureaus.

Enrolling with the BCFMA is free and gives recipients access to enforcement powers that an individual cannot exercise alone. The agency issues a Notice of Attachment to any party owing money to the payor, including employers, banks, and WorkSafeBC, redirecting those funds to the recipient. Under BC Family Maintenance Enforcement Act § 26, a recipient can register a charge against real property the payor owns, even when payments are current. When the payor's location is unknown, the agency searches federal and provincial databases to trace employment and assets. The BCFMA also calculates interest on overdue amounts and may impose default fees when payments are consistently missed, though any payment received is applied first to support owed to the child before any default fees. Since 1988, the agency has distributed over $5 billion to British Columbia families.

When Can the BCFMA Suspend a Licence or Passport for Child Support Debt?

The BCFMA can suspend a driver's licence, deny a passport, and refuse vehicle registration once a payor falls $3,000 or more behind on child support and the agency has been unable to collect through other means. These escalated tools are reserved for serious non-payment and are applied only after standard collection efforts, such as garnishment, have failed.

The range of escalated enforcement is substantial. Provincial legislation allows ICBC to cancel an existing driver's licence of a payor with substantial arrears, not merely refuse renewal, creating immediate consequences for non-payment. Without a valid vehicle licence, a payor cannot purchase vehicle insurance. At the federal level, the agency can request that the government suspend or deny a passport and can suspend federal licences such as a pilot's licence. The BCFMA may also restrict hunting and fishing licences. A payor who wants to challenge these measures must first contact the BCFMA directly to request release of a licence hold or a change in the amount being garnished. Passport holds are treated differently: the Provincial Court cannot interfere with a federal passport block, so a payor must seek judicial review in the BC Supreme Court to challenge that specific action.

Can Back Child Support Be Cancelled or Reduced in British Columbia?

Back child support in British Columbia can be cancelled or reduced only when a court finds it would be "grossly unfair" not to do so, under BC Family Law Act § 174. This is a deliberately high standard. Courts treat arrears as money the payor historically had the ability to pay but did not, and they take a restrictive approach to forgiving that debt.

When applying § 174, a court weighs the factors set out in section 174(2): the efforts the payor made to comply with the order, the reasons the payor cannot pay the arrears, and other relevant circumstances. A payor must generally establish a material change in circumstances preventing payment now or in the future, supported by clear financial disclosure. The provision applies to arrears accumulated under a filed agreement just as it applies to court orders. In Hildebrand v. Hildebrand, 2024 BCCA 395, the court eliminated approximately $280,000 of arrears, interest, and penalties after finding the payor had overpaid relative to his actual income since orders were entered in 2014 — but that outcome was unusual and required applying the four-part Colucci test to depart from the normal three-year limitation on retroactive variation. Most applications to cancel arrears fail because the payor chose not to pay rather than being unable to pay.

How Does Retroactive Child Support Work in BC?

Retroactive child support in British Columbia allows a recipient to claim past due child support that should have been paid based on the payor's actual income, typically reaching back three years from the date of effective notice. The Supreme Court of Canada set this framework in Colucci v. Colucci, 2021 SCC 24, building on D.B.S. v. S.R.G., 2006 SCC 37, and the presumptive three-year limit balances negotiation time against certainty for the child.

The analysis distinguishes three scenarios: a retroactive increase, a retroactive decrease, and the rescission of arrears based on inability to pay. For increases, support is generally varied back to the date of effective notice — and notice is only "effective" once the payor has disclosed changed financial circumstances. Courts may depart from the three-year presumption using four factors: whether there was an understandable reason for the delay, the payor's conduct, the child's circumstances, and hardship to the payor if support is not adjusted. Under BC Family Law Act § 152, a court may change, suspend, or terminate a child support order prospectively or retroactively. Because the best evidence of income is available closest to the time it is earned, payors who delay disclosure weaken their position significantly.

What Is the Child Support Recalculation Service in BC?

The Child Support Recalculation Service (CSRS) is a free administrative service in British Columbia that annually updates child support amounts using the payor's most recent tax return and the Federal Child Support Guidelines, helping parents avoid returning to court. The service adjusts payments when income changes by more than $5 per month and uses the most recent tax year on file with the Canada Revenue Agency.

The CSRS cannot recalculate arrears. It updates only the forward-looking ongoing support amount, so any dispute over unpaid back child support must still go to a judge under BC Family Law Act § 174. The recalculation process takes about four to five months, and the service sets a recalculation anniversary date when the new amount becomes payable. Income disclosure is mandatory: if a payor fails to provide income information within the required time, the CSRS applies a deemed income increase of 10 to 30 percent to the most recent figure used, with the baseline penalty being a 10 percent increase. The CSRS cannot recalculate support where a payor stands in the place of a parent, such as a step-parent. This makes annual tax filing essential — failing to file with the CRA directly raises a payor's deemed income and can inflate the arrears that later accumulate.

How Do Courts Handle Child Support Debt When the Payor Claims Inability to Pay?

When a payor seeks to cancel child support debt based on a current and ongoing inability to pay, British Columbia courts apply a separate analysis from retroactive variation, requiring the payor to prove present and future inability with documented evidence. The order or agreement is presumed to reflect the correct amount owed; the payor simply failed to keep up as payments fell due.

In enforcement proceedings, the payor must give evidence about their finances to prove they cannot pay all arrears at once. If a judge accepts this, the court typically orders the payor to pay a set monthly amount toward arrears on top of ongoing support, rather than wiping the debt. In the most serious cases, a judge can order imprisonment of up to 90 days for each missed payment, though jail is not automatic and is decided at a separate committal hearing held when a debtor fails to make court-ordered arrears payments. A judge may also order the defaulting payor to pay the recipient's legal costs. Under the inability-to-pay branch of Colucci v. Colucci, 2021 SCC 24, full rescission of arrears is rare because the threshold for proving genuine, permanent inability is exacting and requires complete financial disclosure.

Which Court Handles Back Child Support in British Columbia?

Both the Provincial Court and the Supreme Court of British Columbia can handle back child support, but the Provincial Court charges no filing fee for child support applications, while the Supreme Court charges approximately $200 for a Notice of Family Claim. The Provincial Court (Family Court) handles child support and parenting arrangements at $0 cost but cannot grant divorces or divide property.

The choice of court depends on the broader situation. Married parents pursuing a divorce must use the Supreme Court, which has exclusive jurisdiction over divorce and property division and charges about $210 when the claim includes a divorce application (a $200 Notice of Family Claim plus the $10 federal Registration of Divorce Proceedings fee). Additional Supreme Court costs include roughly $80 for a Notice of Application and $31 per affidavit sworn by the clerk, bringing a full uncontested divorce to approximately $290 to $330 in court fees. As of June 2026, verify current amounts with your local court registry, since BC court fees are adjusted annually based on the Consumer Price Index. Parents who cannot afford Supreme Court fees may apply for a waiver under Rule 20-5 of the Supreme Court Family Rules, and mediated settlements using a Certificate of Mediation (Form F100) waive the $200 Notice of Family Claim fee.

How Can You Collect Past Due Child Support You Are Owed?

To collect past due child support in British Columbia, the most effective step is enrolling the order or filed agreement with the BC Family Maintenance Agency, which provides free enforcement and can immediately begin garnishing wages and tracking arrears with 4.45 percent interest (as of May 2026). Enrollment requires a court order or an agreement filed in court.

Recipients have two paths to collection. The first is self-enforcement, where the recipient personally pursues garnishment or other remedies, which is permitted but resource-intensive and limited by the tools an individual can access. The second, used by most recipients, is delegating enforcement to the BCFMA, which records and distributes payments — typically on the same day they are received — and applies the full range of provincial and federal collection powers. Once enrolled, both the payor and recipient receive Notices of Enrollment detailing the support amount and any accumulated arrears. If the payor's income has changed and arrears are growing, the recipient should also consider a retroactive claim under BC Family Law Act § 152 to capture the correct historical amount, ideally within three years of giving effective notice to preserve the presumptive recovery window established in Colucci.