Supported Decision Making Manitoba: An Alternative to Power of Attorney

What Supported Decision Making Actually Means

Supported decision making is a model where a person with a cognitive disability, intellectual disability, or early-stage dementia retains the legal authority to make their own decisions — but does so with the structured help of one or more trusted supporters. The supporters explain options, gather information, communicate the person's choices to third parties, and help interpret complex documents. At no point does the supporter replace the person as the decision-maker.

This is fundamentally different from a power of attorney, where the donor gives an attorney authority to act on the donor's behalf. It's also different from court-ordered committeeship, where a court-appointed committee receives authority to manage the person's property or personal care under the applicable legal process.

Supported decision making sits between full independence and full substitute authority. It works for people who can still form and communicate preferences but need help understanding or acting on them.

Where Manitoba Stands Legally

Manitoba does not yet have a standalone, generally applicable supported decision-making agreement regime. The Adults Living with an Intellectual Disability Act recognizes assisted decision making for adults living with an intellectual disability, but it provides no forms or detailed provisions explaining how such agreements may be used. Other Canadian jurisdictions have adopted more formal mechanisms, while Manitoba's broader framework still relies on ordinary support, a POA, a Health Care Directive, or committeeship depending on the decision.

The Manitoba Law Reform Commission examined supported decision making in a March 2025 consultation paper and asked whether Manitoba should formalize assisted decision-making. The paper describes the current recognition under The Adults Living with an Intellectual Disability Act as substantially less prescriptive than comparable regimes. It does not establish a general agreement framework that third parties (banks, healthcare providers, or government agencies) must honour.

This matters practically. A supporter in Manitoba generally cannot rely on an informal supported-decision arrangement as authority to direct a bank or other third party. Institutions may accommodate the supporter's presence, but the person remains the decision-maker. A power of attorney does carry delegated financial authority; informal support does not.

How It Works in Practice (Without a Detailed Agreement Regime)

Even without a formal, generally applicable agreement regime, supported decision making operates informally across Manitoba — particularly within disability services and community living organizations. A person with an intellectual disability might have a circle of support: family members, social workers, and community advocates who help them understand lease agreements, medical choices, benefit applications, and financial decisions.

The person retains the authority to sign documents, consent to treatment, and manage their own accounts. The supporters are there to explain, clarify, and advocate — not to override. Practically, this works when:

• The person has the capacity to understand information when it's explained in accessible language
• The decision-makers the person interacts with (doctors, landlords, bank tellers) are willing to accommodate the supporter's presence
• The person's cognitive condition is stable enough that they consistently participate in decisions

It becomes inadequate when support is no longer enough for a particular decision. At that stage, substitute decision-making may be required for that area — through a previously executed enduring POA or a court-appointed process, depending on the type of authority needed.

Supported Decision Making vs. Power of Attorney

The two models serve different populations and different stages of capacity:

Supported decision making preserves autonomy. The person remains the legal decision-maker. It's best suited for people with stable cognitive conditions — intellectual disabilities, acquired brain injuries, mild cognitive impairments — who can participate meaningfully in decisions when given appropriate support.

Power of attorney transfers authority. The attorney acts on the donor's behalf. It's designed for situations where the donor either anticipates future incapacity (an enduring POA set up while healthy) or is already losing the ability to manage independently (springing POA that activates on incapacity).

For many Manitoba families, the answer isn't one or the other — it's both. A person in the early stages of dementia might currently benefit from a supported decision-making arrangement, while simultaneously having an enduring POA in place as a safety net for the day when support alone is no longer enough.

Why This Matters for Estate Planning

The limited formal framework in Manitoba creates a gap that families often fill with overly broad powers of attorney. A parent with mild cognitive impairment who could manage their own finances with some help may instead have all authority transferred to a child through an EPOA — not because the parent can't decide, but because there is no generally applicable formal agreement that banks and institutions are required to recognize.

Advocacy groups like the Canadian Association for Community Living and People First of Canada have pushed for legislative change. Several Canadian jurisdictions have moved ahead. If Manitoba adopts a broader formal regime, it could create a new option for families who currently face an all-or-nothing choice between full independence and full substitute authority.

Until a broader formal regime exists, the practical approach is to combine supported decision making with a properly executed enduring power of attorney — using the support model while the person can still participate, and having the EPOA ready for the transition point. The Manitoba Power of Attorney Kit helps families set up the enduring POA side of that equation, with step-by-step instructions for Manitoba's specific requirements. Get the complete toolkit.

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