5 Best Online Postnup Services for Married Couples in Canada

Getting married without a prenup is more common than most couples let on. Life gets busy, the conversation feels awkward, and years slip by. A postnuptial agreement fills that gap, it spells out how assets, debts, and spousal support would be divided if the marriage ended, and it can be updated as finances change. A number of online services now let Canadian couples draft one without paying for full custom legal work, though they differ quite a bit in how they operate, who actually writes the documents, and which provinces they cover.

The five options below represent the main choices available to married couples in Canada right now.

What to Look for Before You Start

Price matters, but it's not the only thing worth checking. Couples should confirm that any service they use drafts to their specific province's family law, not a generic Canadian or US template. They should also know whether a lawyer wrote the document, whether AI generated it, or whether it's assembled from a template, courts in Ontario, BC, and Alberta have thrown out agreements that didn't meet proper drafting or signing standards. Independent legal advice (ILA) is required in some provinces and worth getting in all of them; check whether it's included in the price or costs extra.

1. Jointly

Couples who married without a prenup and now want one on record can use Jointly helping with a postnuptial agreement, to generate a lawyer-drafted document for a flat $429 CAD, with both partners covered under that same fee. The platform was built by BC lawyers Aimee Schalles and Amanda Baron, each with over ten years of family law experience, and it's currently live in Ontario, British Columbia, and Alberta.

The builder walks couples through plain-language questions about assets, debts, and financial priorities, with a live document preview that updates alongside each answer. Clauses are written by practising Canadian lawyers and selected automatically based on the couple's province, not generated by AI. Both partners participate through the builder: either can propose changes, and the platform flags disagreements before anything is signed. Finished agreements download as PDF and DOCX files, with signing instructions included.

Jointly is an authorized participant in the Law Society of Ontario's Access to Innovation pilot and an approved participant in the BC and Alberta Law Society Innovation Sandboxes. Starting is free, and there's a 30-day money-back guarantee. Independent legal advice is available through a partner lawyer network from $399 plus tax. ILA is separate from the $429 fee and is required in Alberta for property provisions to hold up in court.

2. Good Terms

Good Terms (operated by Prenuply AI Inc., an Ontario company) takes a different approach: it generates a customizable draft agreement through an AI-assisted questionnaire, then positions that draft as a starting point for lawyer review rather than a finished document.

The platform covers prenups, postnups, cohabitation agreements, and NDAs across all ten Canadian provinces, giving it broader geographic reach than most competitors. Users answer guided questions in plain English, and the output comes as both a PDF and an editable Word file. Pricing is notably low, $49 CAD as a one-time payment, with three "generations" included so couples can revise drafts or create agreements of different types. Legal review is purchased separately, on top of that fee.

The catch is that Good Terms doesn't claim its documents are lawyer-drafted the way some competitors do. The platform generates the document, and the lawyer reviewing it later handles the quality check. For couples who already have a family lawyer lined up, that workflow can make sense. For those who don't, the true cost depends heavily on what that review eventually runs.

3. Agreeable

Agreeable operates out of Kahane Law Office in Calgary and serves Alberta families. It's less a software platform and more a law-firm-adjacent service: experienced lawyers with a combined 50-plus years of practice draft each agreement, all members of the Law Society of Alberta.

The process is a three-step questionnaire that takes most couples 10 to 15 minutes, followed by a custom agreement at $700 plus GST. That price lands between a bare template and a full custom drafting engagement. Agreeable positions itself against traditional family lawyers, where custom contracts typically run $2,000 to $5,000, and it's designed to close what it calls the "access to justice gap" in Alberta.

The Alberta-only scope is a hard limit. Couples in Ontario or BC won't find coverage here. Independent legal advice is also separate: each partner needs their own lawyer for ILA, which typically adds $500 to $1,500 depending on how detailed the agreement is. So the all-in cost can climb, but the drafting quality is lawyer-sourced rather than template-sourced, which matters in a province that requires ILA for property provisions to hold.

4. Prenups

Prenups.ai launched in 2024 and covers Canadian provinces (Quebec excepted) alongside all US states and Washington DC. The platform uses a 12-step questionnaire covering personal details, assets, debts, spousal support, and estate planning, and automatically adjusts clauses to match the jurisdiction the couple selects.

The output is a Word document - editable and re-generatable up to ten times - which gives couples room to revise. Pricing is $249 CAD for either a prenup or postnuptial agreement. The platform is transparent that it isn't a law firm and doesn't provide legal advice, and it recommends both parties consult independent lawyers before signing.

The AI-generated nature of the documents is the main thing couples should understand before going further. Prenups.ai is faster and cheaper than lawyer-prepared options, and for straightforward financial situations across a broad set of jurisdictions, it may be enough. But it doesn't carry the same lawyer-authored credibility as platforms built on manually drafted clause libraries, and the ILA step becomes especially important here.

5. Prenup

Prenup.ca has been operating since 2005 out of Ottawa, run by Jeffrey Behrendt at Behrendt Professional Corporation. It's a family law firm, not a software platform, and that distinction shows in how it works. The firm keeps costs down by operating via email and telephone rather than maintaining large office spaces, passing those savings on through low flat-fee packages.

Services include a lawyer-prepared prenup form couples can customize themselves, fully customized lawyer-prepared agreements, and independent legal advice. Coverage extends across Canadian provinces, with specific guidance available for Ontario, BC, Alberta, Saskatchewan, Manitoba, Quebec, and the Atlantic provinces.

Because it's an actual law firm with a single practising attorney focused exclusively on family law, the depth of experience is real. For couples who want a human lawyer involved from the start rather than a platform intermediary, that's a meaningful difference. The trade-off is that the process is less self-serve than software-based alternatives, and turnaround depends on the firm's availability rather than a builder you can access at midnight.

Bottom Line

The right service depends on where a couple lives, how complex their finances are, and what they're willing to pay. Couples in Alberta who want lawyer-authored drafting and a local legal footing might look at Agreeable; those in Ontario or BC who want a fully guided, collaborative builder with province-specific clauses have more options at the platform level. Good Terms suits couples who already have their own lawyer lined up and want a low-cost draft to hand off. Prenups.ai works across more jurisdictions than most, which helps couples with assets in multiple provinces or across the border. And Prenup.ca is a fit for anyone who'd rather deal with a practising family lawyer directly, even if the process is less automated. ILA adds to the cost regardless of which service a couple picks, budget for it from the start.