- Ontario’s Family Law Act doesn’t ask spouses to share everything they own at separation.
- Value what you owned and owed on the date of marriage.
- Here’s where the general rule stops applying, and it catches a lot of people off guard.
You had savings before you got married — an RRSP, a down payment fund, investments built up over years of work. If the marriage ends, does all of that suddenly become shared property? Generally, no. Ontario’s equalization rules are built specifically to protect what you brought in, with one significant and often surprising exception.
Understanding what happens to your pre-marriage savings starts with a mechanism called the date-of-marriage deduction — and understanding where that protection stops.
The General Rule: What You Brought In Is Protected
Ontario’s Family Law Act doesn’t ask spouses to share everything they own at separation. It asks them to share the growth in their net worth during the marriage. To do that, the value of what each spouse owned (and owed) on the date they married is generally deducted from what they own (and owe) at the end of the relationship, so only the increase — the wealth built during the marriage — gets equalized.
How the Deduction Works, Step by Step
- Value what you owned and owed on the date of marriage. This becomes your starting figure — assets minus debts.
- Value what you own and owe on the valuation date, generally the date of separation.
- Subtract the date-of-marriage figure from the valuation-date figure. The result is your net growth during the marriage.
- Compare the two spouses’ resulting figures.
- The spouse with the higher figure generally owes the other spouse half the difference, subject to any applicable exclusions.
The Big Exception: The Matrimonial Home
Here’s where the general rule stops applying, and it catches a lot of people off guard. If the property you brought pre-marriage savings into becomes the matrimonial home — the home the family actually lives in at separation — it gets no date-of-marriage deduction at all, even if you paid for it entirely with savings from before the wedding. The full value of the matrimonial home is generally counted, not just its growth during the marriage. Anyone planning to buy a home with premarital savings, and expecting to live in it as a couple, should understand this trade-off well in advance.
Other Ways This Protection Can Erode
- Commingling premarital savings into joint accounts alongside new contributions made during the marriage makes it difficult to isolate what was truly there on the date of marriage.
- Using premarital savings for renovations or a down payment on what becomes the matrimonial home effectively feeds those funds into the one asset that gets no deduction.
- Not keeping records from around the date of marriage — old statements, valuations, or account balances — leaves you without evidence of what you’re entitled to deduct.
- Letting years pass without a snapshot in writing. A spreadsheet or file of account statements from around your wedding date, put together while the information is easy to find, is worth far more than trying to reconstruct the same picture from memory a decade later.
Documenting What You Brought Into the Marriage
Building your date-of-marriage picture doesn’t need to happen all at once, but it helps to have a routine for it:
- [ ] Pull account statements — bank, investment, RRSP, pension — from as close to your wedding date as possible
- [ ] Note the balance owing on any loans, credit cards, or lines of credit you had at the time
- [ ] Keep vehicle registrations, appraisals, or purchase records for anything of significant value
- [ ] Store copies somewhere separate from shared household files
- [ ] Revisit and update the file if your premarital assets change form (an RRSP gets converted, an investment is sold and reinvested)
Couples rarely think to do this on their wedding day, and there’s no requirement that you do. But if a separation ever happens, whoever has kept the clearer paper trail is in a noticeably stronger position when it comes time to calculate the deduction.
Frequently asked questions
Do I need a formal appraisal of what I owned on the date I married?
Not necessarily a formal appraisal for every asset, but you need reliable evidence of value as of that date — bank or brokerage statements, vehicle valuations, or property assessments from around that time. The more concrete the evidence, the stronger your position.
What if I can’t find records from that long ago?
Courts work with the best available evidence rather than demanding perfection. Missing records make establishing the deduction harder, not automatically impossible — but if you’re anticipating a separation, gathering whatever documentation still exists sooner is always better than later.
Does this deduction apply to debts too, or just assets?
It’s a net figure — assets minus debts — as of the date of marriage. Premarital debt is factored into the calculation the same way premarital assets are, which can work in either spouse’s favour depending on the numbers.
Can a marriage contract protect pre-marriage savings even better than the default rule?
Yes. Spelling out exactly how premarital assets will be treated — beyond relying solely on the statutory date-of-marriage deduction — is one of the most common reasons couples sign a marriage contract before marrying. To be enforceable, it needs to be in writing, signed by both parties, and witnessed.
What if my pre-marriage savings grew significantly during the marriage — do I lose that growth too?
No — the growth is exactly what equalization is designed to share; the date-of-marriage deduction protects the original starting value, not the increase. If premarital investments doubled in value over the course of a long marriage, the original amount is still generally deducted, while the growth on top of it is treated as part of the wealth built during the marriage.
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