You’ve decided to get a prenup. Great. Now comes the next question: how? In Canada, there are essentially three paths to a marriage contract: do it yourself, hire a lawyer, or use an online platform. Each has trade-offs in cost, quality, speed, and enforceability.
Here’s an honest comparison.
Option 1: The DIY Prenup
The cheapest route is downloading a template and filling it in yourself. Free or low-cost prenup templates are available online, and the appeal is obvious: it costs virtually nothing and you can do it on your own schedule.
The risks, however, are substantial. Generic templates are rarely province-specific. A template designed for U.S. law won’t comply with Ontario’s Family Law Act. Even Canadian templates may not account for the specific requirements of your province. They also tend to be one-size-fits-all, meaning they don’t address the nuances of your specific financial situation.
The biggest risk is a false sense of security. You might believe you’re protected, only to discover years later that your agreement is unenforceable because it missed a critical requirement: proper financial disclosure, adequate witness procedures, or province-specific formalities.
DIY cost: $0 to $50. Enforceability risk: High.
Option 2: The Traditional Lawyer Route
Hiring a family lawyer is the gold standard for quality and enforceability. A lawyer drafts the agreement from scratch based on your specific circumstances, ensures compliance with provincial law, and provides independent legal advice as part of the process.
In Ontario, the typical cost for a lawyer-drafted prenup ranges from $1,500 to $10,000 per couple, depending on the complexity of your finances and the amount of negotiation involved. Each partner should ideally have their own lawyer, which means the total cost can double. The process typically takes two to eight weeks.
For couples with complex finances (multiple businesses, international assets, blended families, or high-net-worth situations) the lawyer route is often worth the investment. The personalized attention and legal expertise are difficult to replicate through other methods.
The downside? Cost and accessibility. Many young couples simply can’t afford $5,000 to $10,000 for a prenup, especially while paying for a wedding. The traditional route also tends to be adversarial by design: each partner is represented by their own lawyer, which can introduce tension into what should be a collaborative process.
Lawyer cost: $1,500 to $10,000+. Enforceability risk: Low (when done properly).
Option 3: The Online Platform
Online platforms like I Do Prenup represent a middle path: more affordable than a lawyer, more reliable than a template. These platforms use guided questionnaires designed by family law professionals to walk both partners through the key decisions. The output is a customized, province-specific marriage contract that meets the legal requirements of the Family Law Act. To see how the process works step by step, visit How It Works.
Online platforms work best for couples with straightforward to moderately complex finances. If your situation involves a single home, standard income, some savings, and perhaps student debt, an online platform handles it efficiently and affordably.
The limitation is that platforms don’t provide personalized legal advice. They can’t answer specific questions about your unique situation the way a lawyer can. That’s why many couples use a hybrid approach: build the agreement on the platform, then have a lawyer review the final document. This gives you the best of both worlds at a fraction of the all-lawyer cost.
Online platform cost: $429 to $599 per couple. Enforceability risk: Low (when used as designed).
Which Should You Choose?
If your finances are straightforward and your budget is tight, an online platform is the smart choice. If your situation is complex (multiple businesses, international assets, blended families, significant wealth), invest in a lawyer. If you’re somewhere in between, the hybrid approach, platform plus lawyer review, offers the best balance of quality, cost, and enforceability.
The only wrong answer is doing nothing.
The Hybrid Approach: Best of Both Worlds
Increasingly, couples are adopting a hybrid strategy: use an online platform to build the agreement, then have a lawyer review the final document and provide independent legal advice. This gives you the affordability and convenience of a platform with the legal assurance of professional review.
The platform handles the structure, questionnaire, financial disclosure, and document generation. The lawyer handles the quality assurance, identifies any issues specific to your situation, and provides the ILA certificate that strengthens enforceability. Total cost is typically $1,000 to $1,500, a fraction of the all-lawyer route.
Check out our pricing for details on what’s included.
Find the right approach for your relationship. Start at I Do Prenup.
Frequently Asked Questions
Q: Are DIY prenup templates legal in Ontario?
Templates themselves aren’t illegal, but they often don’t comply with Ontario’s specific legal requirements. A generic template may produce an unenforceable agreement.
Q: Can I use an online platform and still get a lawyer?
Absolutely. Many couples build their agreement on a platform and then have a lawyer review it. This hybrid approach is cost-effective and produces a strong agreement.
Q: How much does a prenup cost in Ontario in 2026? Traditional lawyers charge $1,500 to $10,000. Online platforms like I Do Prenup start at a fraction of that cost, making prenups accessible to couples at every income level.