Family Law Rules: which filing portal applies
In force 14 October 2025
Since 14 October 2025 the Family Law Rules name the software a filing goes through, and the answer in Toronto is not the answer everywhere else in Ontario.
Separation agreements in Ontario
A separation agreement in Ontario settles property, support and parenting without a court file. It is also the document most often signed badly, because the two things that make it stand up are a signature formality and a disclosure obligation.
About this work
What can a separation agreement actually settle?
Property, support, parenting and almost anything else the parties want to record, in one document, without a court file. For most separating couples in Ontario it is the whole of the legal process, and a divorce later is a short application that does not reopen any of it.
Property is where it does the most work. A married couple's default entitlement is an equalization payment under the Family Law Act, and an agreement can settle that figure, deal with the matrimonial home, and release each party's rights against the other's estate. It can also do something the statute cannot: divide things in a way that suits this particular family rather than in the way the formula produces.
Support can be fixed, waived, or made reviewable on stated events. A waiver of spousal support is enforceable but it is scrutinised, and an agreement that leaves one party destitute while the other is comfortable invites an application to set it aside years later.
What it cannot do is bind a court on the children in the same way. Parenting and child support arrangements in an agreement carry real weight and are usually followed, but a court retains its own view of a child's best interests and child support belongs to the child rather than to the parent negotiating it.
What makes it hold
Three formalities, and one obligation that outranks them
Section 55(1) of the Family Law Act sets out the form. Section 56(4) sets out how a court can take the agreement apart afterwards, and that is the provision worth understanding before anybody signs.
In writing, signed by the parties, and witnessed
All three. A domestic contract, and an agreement to amend or rescind one, is unenforceable unless made in writing, signed by the parties and witnessed. The witness is the requirement people leave out, and an unwitnessed agreement is not a weak agreement, it is an unenforceable one.
Non-disclosure can undo it years later
A court may set aside a domestic contract or a provision in it if a party failed to disclose significant assets, or significant debts or other liabilities, existing when the contract was made. Not assets acquired later. What existed at the time and was not disclosed.
So can not understanding what you signed
The court may also set it aside if a party did not understand the nature or consequences of the contract. This is why independent legal advice matters on both sides: an agreement where one party had a lawyer and the other did not is easier to attack, whatever it says.
And it can be set aside on ordinary contract principles
Section 56(4)(c) leaves the law of contract intact, so duress, undue influence and unconscionability all remain available. Signing under pressure a week before a wedding or a departure is a fact pattern courts look at closely.
The route
How does the process run?
5 stages, each with its own clock
Each provision below is from the Ontario Family Law Act as consolidated for 2026, and is named beside the point it supports.
01
The form requirement
FLA s. 55(1)A domestic contract and an agreement to amend or rescind a domestic contract are unenforceable unless made in writing, signed by the parties and witnessed. The same rule applies to the amendment as to the original, which is why a change agreed by text message changes nothing.
02
Setting it aside for non-disclosure
FLA s. 56(4)(a)A court may set aside the contract or a provision in it where a party failed to disclose significant assets, or significant debts or other liabilities, existing when it was made.
03
Setting it aside for lack of understanding
FLA s. 56(4)(b)Where a party did not understand the nature or consequences of the contract. Independent legal advice for both parties is the ordinary answer to this, and it is worth more than any recital in the document saying the party understood it.
04
And on ordinary contract grounds
FLA s. 56(4)(c)Otherwise in accordance with the law of contract, which preserves duress, undue influence, misrepresentation and unconscionability.
05
Barriers to religious remarriage
FLA s. 56(5)The court may set aside all or part of a separation agreement where it is satisfied that one spouse's removal of barriers preventing the other's remarriage within their faith was a consideration in making it. An agreement bought with a religious divorce is vulnerable.
Before the meeting
What to bring to the first meeting
6 things to bring
Bring what you have and say what is missing. A meeting with the papers in front of it settles in one sitting what two telephone calls will not.
- ✓The date you separated, and whether you are still living in the same home
- ✓A list of what you each own and owe, including anything held abroad
- ✓Pension statements, and any interest in a company or a family business
- ✓The deed or title for any property, and the mortgage balance
- ✓Income for both of you: pay slips, notices of assessment, business accounts
- ✓Any agreement already drafted or signed, however informal
Our approach
A clear path forward
The same four steps on every matter, whether it is a refusal at the Federal Court or a ticket at the Provincial Offences court.
Book a consultation01
Understand
We take the full history and read the documents before offering an opinion. Most bad advice comes from acting on half the facts.
02
Assess
You get a candid read on strength, timeline and cost, including when the honest answer is that you do not need to hire anyone.
03
Act
We prepare the application, the defence or the appeal properly the first time, because fixing a weak record later is harder and dearer.
04
Report
You hear from us at each stage, and you hear what a wait actually means rather than a date chosen to sound better.
Reported decisions
What has this work produced?
7 allowed of 22 reported since 2023
Public judgments of the Federal Court with Kapil Rathod as counsel of record, each checkable by citation on the court's own site. The rest were dismissed and are listed with these ones.
Super visa, parents and grandparents
Sharifi v Canada (Citizenship and Immigration)
2026 FC 99Docket IMM-23381-24
Application allowedWork permit, Temporary Foreign Worker Program
Sing v Canada (Citizenship and Immigration)
2026 FC 105Docket IMM-18690-24
Application allowedTemporary resident visa
Rehman v Canada (Citizenship and Immigration)
2026 FC 805Docket IMM-20802-24
Application allowedPermanent residence, Express Entry
Goel v Canada (Citizenship and Immigration)
2025 FC 275Docket IMM-1797-24
Application allowedWork permit, job offer
Sharma v Canada (Citizenship and Immigration)
2024 FC 1928Docket IMM-6445-23
Application allowedStudy permit
Tandel v Canada (Citizenship and Immigration)
2024 FC 1487Docket IMM-3700-23
Application allowedTemporary resident visa
Gill v Canada (Citizenship and Immigration)
2024 FC 1453Docket IMM-10337-23
Application allowed
Updates
What has changed for separation agreements?
1 note
Dated notes on the rule changes that reach this work. Each records what moved and when it took effect; this page carries the position now.
Where to go next
A separation agreement in Ontario is only as good as its formalities and its disclosure.
Writing, signatures and a witness make it enforceable; full disclosure of what existed at the time is what stops it being set aside under section 56(4) years afterwards.
Common questions
What do people ask about separation agreements?
8 answered here
Written to be read once and acted on rather than to be rung about. Each answer is complete where the law allows a complete answer.
Why is disclosure the thing that decides these cases?
Because section 56(4)(a) makes it the cleanest route to setting an agreement aside, and because it is assessed on what existed when the agreement was made rather than on what either party thought was relevant.
The provision covers significant assets and significant debts or other liabilities. A pension nobody mentioned, an interest in a family company, a property abroad, a loan from a relative recorded nowhere: each of those has undone agreements. The party who did not disclose is rarely trying to defraud anybody. They usually did not think it counted.
The practical answer is a sworn financial statement from each side, exchanged before the agreement is drafted rather than after. It is slower and it feels adversarial for a couple who are separating amicably, and it is the single thing that makes the document survive.
For families with assets outside Canada this deserves particular attention. Property in India or elsewhere is an asset for these purposes whether or not it can easily be sold or transferred, and leaving it out because it is complicated is how a settled agreement is reopened six years later.
Do both people need their own lawyer?
One lawyer cannot act for both. The interests are opposed by definition, and a lawyer who drafts for one party can explain the document to that party only.
That leaves the other party with a choice, and section 56(4)(b) is the reason it matters. If they did not understand the nature or consequences of the agreement, a court can set it aside. A certificate of independent legal advice is evidence that they did, and its absence is not fatal but it is the first thing the other side will point to.
It is worth being blunt about who this protects. Independent advice on the other side protects the party who wants the agreement to hold, more than it protects the party receiving it. Paying for the other side to get advice is often the cheapest insurance available on the document.
Where there is a real imbalance, in language, in financial sophistication, or in who has controlled the money during the relationship, that imbalance is exactly what a later application will be built on. It is better addressed at the drafting stage than argued about afterwards.
Can an agreement be changed later?
Yes, and the change has to meet the same formality. Section 55(1) applies to an agreement to amend or rescind a domestic contract just as it applies to the contract itself, so a variation has to be in writing, signed and witnessed. An arrangement reached by text message or agreed on the telephone does not amend anything, however long both parties have been living by it.
That cuts both ways. A parent who has informally accepted reduced child support for three years has not varied the agreement, and the arrears may still be owed. A parent who has informally paid more has not created an obligation to keep doing so.
Child support is different in kind, because it is the child's right rather than the parents' to trade away. An agreed figure that departs from the Federal Child Support Guidelines can be revisited, and a court considering a divorce has its own duty to be satisfied that reasonable arrangements have been made for the children before granting it.
Where circumstances have genuinely changed, a properly drafted amendment costs very little compared with an application to vary. The time to do it is when the change happens.
Does a separation agreement have to be witnessed?
Yes. Section 55(1) of the Family Law Act provides that a domestic contract is unenforceable unless made in writing, signed by the parties and witnessed. All three are required, and the same rule applies to any later agreement amending or rescinding it.
Can my ex set the agreement aside years later?
It is possible under section 56(4). A court may set aside a domestic contract or a provision in it where a party failed to disclose significant assets, debts or other liabilities existing when it was made, where a party did not understand its nature or consequences, or otherwise in accordance with the law of contract.
Do I need a separation agreement to get divorced?
No, but it is usually the sensible order. A divorce ends the marriage; it does not divide property or settle support. Where the agreement is already in place the divorce is generally a short application, and the court still has to satisfy itself that reasonable arrangements have been made for any children.
Can we use one lawyer to save money?
No lawyer can act for both parties on a separation agreement, because the interests conflict. One of you can retain a lawyer to draft it and the other should get independent legal advice. That advice mostly protects the party who wants the agreement to survive, which is worth knowing when deciding who pays for it.
We agreed a change over text. Does that count?
No. An agreement to amend a domestic contract is caught by the same section 55(1) formality, so it must be in writing, signed and witnessed. Living by an informal change does not vary the agreement, and arrears can still be owed under the original terms.
Speak to someone this week
Bring the date you separated and a list of what you each own and owe. A separation agreement in Ontario is built from that disclosure before anything is drafted.
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