Alberta's default property rules already exempt some assets from division, but that default protection is narrower and more fragile than most people assume. A prenuptial agreement lets a couple set their own, more specific and durable terms for exactly these assets, rather than relying on exemptions that can still be disputed later.
Yes, a prenuptial agreement can protect a business, inheritance, or investments in Alberta, going further than the default exemptions under the Family Property Act by addressing growth in value, commingled funds, and future contributions specifically. A prenuptial agreement lawyer in Calgary can draft terms tailored to the specific asset rather than relying on default rules alone.
Without an agreement, a business's value at the start of a marriage may be exempt from division, but growth in that value during the marriage generally isn't, and establishing what counts as growth versus original value often requires a contested valuation at separation.
A prenuptial agreement can specify upfront how the business will be treated, designating it, including future growth, as fully exempt, or setting out a specific formula or valuation approach agreed to in advance. This gives both partners clarity before a dispute exists, rather than litigating the business's value during a divorce.
Alberta's default rules already exempt inheritances from division, but only at their value when received, meaning any growth in value during the marriage can still be shared without an agreement addressing it.
A prenuptial agreement can extend that protection to cover growth as well and, importantly, can address what happens if inherited funds get mixed with joint accounts or assets, which is one of the most common ways an inheritance loses its otherwise protected status.
Investment accounts and savings held before the marriage follow similar default rules to other exempt property, protected at their starting value, with growth potentially shared absent an agreement.
A prenuptial agreement can specify how investment growth, future contributions, and any reinvested returns will be treated, giving a much clearer picture than relying on default exemptions that weren't designed with a specific investment portfolio in mind.
The default exemptions under Alberta's Family Property Act provide a baseline, but they leave real gaps: growth in value generally isn't automatically exempt, tracing an asset back to its original, protected form can become genuinely difficult after years of a marriage, and commingling funds can undermine an exemption that would otherwise have applied. A prenuptial agreement closes these gaps by setting specific, agreed terms in advance, rather than leaving them to be argued over during a separation.
A prenuptial agreement can address property, including a business, inheritance, and investments, but it can't predetermine parenting arrangements or waive a child's right to support.
Alberta courts retain authority over children's best interests regardless of what's in a prenuptial agreement, so protection under the agreement is specifically about financial and property matters, not the full scope of what a marriage involves.
A prenuptial agreement sets the terms, but keeping an asset genuinely protected also depends on how it's actually managed during the marriage:
| Asset Type | Default Protection Without a Prenup | What a Prenup Can Add |
| Business | Value at time of marriage may be exempt | Growth exemption, agreed valuation approach |
| Inheritance | Exempt at value when received | Growth exemption, treatment of commingled funds |
| Investments and savings | Starting value may be exempt | Clear terms for growth, contributions, and reinvested returns |
THEBIL Family Law drafts prenuptial agreements with specific attention to business, inheritance, and investment protection, addressing growth and commingling risks that default exemptions don't fully cover. A prenuptial agreement lawyer in Calgary experienced with these asset types helps build terms that actually hold up if they're needed later.
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Yes. It can go beyond the default exemption for the business's starting value by addressing growth during the marriage and setting an agreed valuation approach.
Not entirely, since Alberta's default rules already exempt inheritances at their received value, but a prenup extends that protection to cover growth and addresses the risk of losing protection through commingling.
This can jeopardize the exemption that would otherwise apply, which is why a prenuptial agreement addressing commingled funds, and careful account management, both matter.
Yes. Without an agreement, growth in a pre-marital investment may be shared. A prenuptial agreement can specify that growth stays protected as well.
It's worth reviewing periodically, especially after a significant change, to confirm the terms still reflect the asset's current situation.
It depends on how the agreement is drafted. A prenuptial agreement lawyer in Calgary can structure terms to address future assets, not just what exists at the time of signing.
Yes. Common-law couples in Alberta use a similar document, a cohabitation agreement, which can address the same kinds of asset protection.
Yes. THEBIL Family Law builds terms tailored to a couple's specific assets, rather than relying on generic default exemptions alone.
Protecting a business, inheritance, or investments takes more than relying on default rules. THEBIL Family Law can draft terms specific to your situation. Book a consultation to talk through what you want to protect.
