- A signed agreement about a family law dispute is generally binding, subject to the Family Law Act.
- For witnessed property agreements the court may act only on listed grounds, such as failure to disclose significant property or debts, or if the agreement is significantly unfair.
- A court must set aside or replace all or part of a parenting agreement that is not in the child's best interests, while child support follows a different test.
After separating, many people sign an agreement to settle things quickly, then later feel it was unfair, rushed or based on incomplete information. The question is whether a court can undo it.
The answer depends on what the agreement covers: property and debts, spousal support or children. Each has its own test under British Columbia's Family Law Act. This article explains those tests in plain language. It is general information, not legal advice.
This article covers the law of British Columbia.
The starting point: agreements are binding
The Family Law Act lets two or more people make an agreement about a family law dispute, and says that agreement is binding on the parties, subject to the Act. A written agreement means one that is in writing and signed by all parties. The Act does not require independent legal advice for a separation agreement to bind you, and it does not name a certificate of independent legal advice. Missing advice can still matter as a factor when the court considers whether you understood the agreement.
Property and debt agreements
If each spouse signed a written property and debt agreement with at least one witness, the Supreme Court may set aside or replace all or part of it only if one of these circumstances existed when it was made:
- a spouse failed to disclose significant property or debts;
- a spouse took improper advantage of the other's vulnerability;
- a spouse did not understand the nature or consequences of the agreement;
- other circumstances that would make a contract voidable at common law.
There is also a safety valve: even where none of those circumstances exist, the court may set aside or replace a witnessed agreement if it is significantly unfair. It considers the time that has passed, the spouses' intention to achieve certainty, and how far they relied on the terms. The court may decline to act if doing so would not substantially change the agreement's terms.
For property covered by an agreement under section 93(1), the court cannot make a property division order unless that agreement is set aside in whole or in part. If the agreement was not witnessed, the court may still apply the same set-aside test where it considers that appropriate.
Spousal support agreements
For a written spousal support agreement with each signature witnessed, the court may set it aside or replace it only if, when it was made, a spouse failed to disclose income, significant property or debts, took improper advantage of the other's vulnerability, or did not understand the agreement's nature or consequences. The court may also act on other grounds that would make a contract voidable at common law, and if the agreement is significantly unfair.
Agreements about children
Children's issues are treated differently. A parenting agreement is binding only if made after separation, or when you are about to separate and intend it to take effect on separation. The court must set aside or replace all or part of it if satisfied it is not in the child's best interests. Child support agreements are similarly binding only if made at that time.
On child support, a court may depart from the guideline amount if the parties consent or have an agreement and the court is satisfied that reasonable arrangements have been made for the child's support.
| Type of agreement | Main test |
|---|---|
| Property and debt (witnessed) | Listed circumstances, or significant unfairness |
| Spousal support (witnessed) | Non-disclosure, vulnerability, not understanding, or significant unfairness |
| Parenting | Not in the child's best interests |
| Child support | Binding only if made after separation or when about to separate; the court may depart from the guideline amount if the parties consent or have an agreement and reasonable arrangements have been made for the child's support |
Changing an agreement and next steps
Not every problem requires a court. If you and your former spouse agree to change the terms, a later agreement that changes an earlier one revokes each changed part, and the unchanged parts remain in effect. A court may also incorporate a written agreement into an order, and where a later order differs, it replaces the part of the agreement that provides differently.
- Find the signed agreement and note whether signatures were witnessed.
- Gather financial records from the time you signed, to compare what was disclosed with what existed.
- Write down how the agreement was reached and what advice, if any, you had.
- Note how much time has passed and how each of you has relied on its terms.
- Speak with a lawyer promptly; whether your facts fit a ground is a legal judgment.
Frequently asked questions
Can I set aside an agreement just because I regret it?
Regret alone is not a listed ground. For a witnessed property agreement, the court looks for circumstances such as non-disclosure, improper advantage of vulnerability or not understanding the agreement, or for significant unfairness.
Was my agreement invalid because I had no lawyer?
The Family Law Act does not require independent legal advice for an agreement to bind you. The lack of advice can matter when the court considers whether you understood the agreement or whether there was improper advantage.
Does the time since signing matter?
Yes, in part. When deciding whether a witnessed property agreement is significantly unfair, the court considers the time that has passed and how far the spouses relied on its terms.
Can a child support or parenting agreement be changed?
A court must set aside or replace a parenting agreement, in whole or part, if it is not in the child's best interests. For child support, the court may depart from the guideline amount if the parties consent or have an agreement and the court is satisfied that reasonable arrangements have been made for the child's support.
Sources
- Family Law Act, Part 1 (BC Laws) — bclaws.gov.bc.ca
- Family Law Act, Part 2 (BC Laws) — bclaws.gov.bc.ca
- Family Law Act, Part 4 (BC Laws) — bclaws.gov.bc.ca
- Family Law Act, Part 7 (BC Laws) — bclaws.gov.bc.ca
- Family Law Act, Part 5 (BC Laws) — bclaws.gov.bc.ca
- Family Law Act, Part 10 (BC Laws) — bclaws.gov.bc.ca
Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.
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