Updating a Separation Agreement Nobody Had Touched in Years

The situation

Gabriela is a construction project manager in Brampton, and she has been the primary parent to her 12-year-old since she and Yanni separated in 2019. At the time, the two of them sat down together, wrote out a separation agreement without lawyers, and signed it in front of a notary. It covered parenting time, a modest division of their small joint savings, and monthly child support of about $900 — a figure based on Yanni's income that year, roughly $85,000, run through the standard child support tables.

Nobody looked at the agreement again after that. Yanni, a software developer, moved between two employers over the next several years and was eventually promoted into a senior technical role. By the time Gabriela came to Treadstone Law, Yanni's income had climbed to roughly $190,000, largely through salary increases and vesting stock compensation. Gabriela's own income as a project manager had grown too, to around $95,000, but the household gap that mattered — the one written into a support number frozen at 2019 levels — had not closed. It had widened.

Gabriela had mentioned the pay increase to Yanni informally, more than once, over dinner handoffs and text messages about their child's activities. Nothing about the agreement itself had changed. She came to us wanting it brought up to date — and to understand whether the years of underpayment could be recovered.

What the review found

Two things stood out when we reviewed the 2019 agreement. First, it had no review clause — no requirement that either parent exchange updated income information annually, and no built-in trigger for recalculating support as incomes changed. Once signed, it was designed to sit still unless someone actively reopened it.

Second, and more consequential, the agreement had never been filed with the court. A separation agreement is a private contract between two people; under the Family Law Act, it can be filed with the Superior Court, and once filed, its support terms can be enforced the same way a court order can, through the Family Responsibility Office. Because Gabriela and Yanni's agreement was never filed, there was nothing behind the $900 figure but their word to each other — no automatic enforcement, no default consequence if a payment came late, and no formal record that either of them had ever raised the idea of increasing it.

That last point mattered for the retroactive question. When a support recipient asks a court to order support increases reaching back into the past, the paying parent's degree of notice is one of the things a court weighs — not a fixed deadline, but a real factor in how far back an award will go. Text messages and dinner-table comments about a raise are not nothing, but they are a long way from a clear, documented request to revisit the support number. Gabriela had never sent anything in writing asking Yanni to update the agreement or disclose income until she came to see us.

We also confirmed the child support tables would produce a materially different number today. At an income around $190,000, the guideline amount for one child works out to roughly $1,750 a month — close to double the figure fixed seven years earlier. The gap of about $850 a month, multiplied across the years since Yanni's income first climbed past the original figure, was substantial.

There was a second wrinkle worth flagging to Gabriela early, so she was not blindsided later. Because the original agreement was never filed and never enforced through the Family Responsibility Office, there was no formal arrears record anywhere — no default notices, no missed-payment history, nothing a court could point to as evidence that either parent had treated the $900 figure as anything but a mutual understanding that had simply gone stale. That absence of a paper trail cuts against a large retroactive award just as much as the absence of a written request does. A judge asked to look back seven years would be looking at two parents who each, in their own way, let the agreement sit untouched.

What we did

1. Requested full financial disclosure from Yanni. Before recalculating anything, we needed accurate, current income information rather than estimates from conversation. We sent a written request for recent income tax returns and pay statements, framed as a routine step toward updating the agreement rather than as a dispute.
2. Recalculated support under the current guidelines. Using Yanni's confirmed income of roughly $190,000, we set out the updated table amount of about $1,750 a month and compared it plainly against the $900 figure still in force.
3. Assessed what the retroactive claim could realistically recover. We identified the point at which Gabriela's messages about Yanni's raise could be said to give reasonable notice that she intended to seek more support — roughly fourteen months before she retained us, when a specific text exchange discussed Yanni's promotion in detail. We advised her honestly that reaching further back than that, to when the income increase first began, would be difficult to win and expensive to fight for, given the absence of any earlier written request or filed arrears history.
4. Negotiated an updated agreement with Yanni's counsel. Rather than starting a court application, we proposed a revised agreement: the current guideline support amount going forward, a retroactive lump sum covering the fourteen-month notice window, and — critically — an annual income-exchange clause so this gap could not reopen unnoticed.
5. Filed the updated agreement with the Superior Court. Once signed, we filed it so its support terms became enforceable through the Family Responsibility Office, closing the gap that had let the original agreement go unenforced for seven years.

The outcome

Yanni's counsel did not dispute the current-income recalculation — the numbers were straightforward once disclosure was in hand — and agreed to the ongoing support of roughly $1,750 a month along with the annual review clause. The retroactive piece was negotiated rather than litigated: instead of the roughly $30,600 that a full multi-year gap might theoretically have represented, Gabriela recovered a lump sum of about $11,900, reflecting the fourteen months where notice could be clearly shown.

That left a real shortfall. Measured against what a support order would likely have produced had the agreement included a review clause from the start, or had Gabriela sent a written request the year Yanni's income first rose, the household is out roughly $18,700 it will not recover. It is a loss, and we told Gabriela plainly that it was a loss — not a case where waiting cost nothing.

What the update did accomplish was closing the door on it happening again. The agreement is now filed with the court and enforceable through the Family Responsibility Office, it carries an annual obligation to exchange income information, and both parents know that a documented request now starts the clock on any future retroactive claim, rather than a conversation that leaves no record. The current support figure also reflects Yanni's actual income rather than a number nearly a decade out of date, which is the larger and more durable win for a 12-year-old whose expenses only grow from here.

Gabriela's takeaway, in her own words at the final meeting, was less about the money left on the table and more about never letting an agreement go stale again. The updated document now does the work the original one never could — it moves when incomes move, instead of waiting for someone to notice how far behind it has fallen.

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