
Guardianship Documents in Ontario: Complete Guide
Everything you need to know about guardianship documents in Ontario. Learn about guardianship for children and incapable adults, what documents are required, and when notarization is needed.
Understanding Guardianship in Ontario
Guardianship is the legal authority to make decisions on behalf of someone who cannot make decisions for themselves. This can apply to:
- Minor children — When parents are unable to care for them
- Incapable adults — When someone cannot manage their own affairs due to mental incapacity
This guide covers the document requirements for both types of guardianship in Ontario.
Types of Guardianship
Guardianship of Children
When a child's parents cannot care for them, a guardian may be appointed:
- Temporarily (e.g., during parental illness or travel)
- Permanently (e.g., after parental death)
Guardianship of Property (Adults)
Authority to manage an incapable person's:
- Finances
- Property
- Legal affairs
Guardianship of the Person (Adults)
Authority to make personal decisions for an incapable person:
- Health care
- Living arrangements
- Safety and well-being
Guardianship of Children
Temporary Guardianship
For short-term situations (parental travel, illness, etc.):
Documents that may help:
| Document | Purpose |
|---|---|
| Temporary guardianship letter | Notarized authorization |
| Medical consent | Authority to seek medical care |
| School authorization | Authority for school decisions |
| Statutory declaration | Formal declaration of temporary guardianship |
Note: Temporary arrangements are not court-ordered but can be helpful for dealing with schools, doctors, and other institutions.
Permanent Guardianship Through Will
Parents can name a guardian for their children in their will:
- Takes effect only after both parents' death
- Should include backup guardian
- Will should be properly witnessed and stored
Notarization of wills: While not legally required in Ontario, notarized wills or certified copies may be useful for probate.
Court-Appointed Guardianship
In some situations, a court must appoint a guardian:
| Situation | Court Action |
|---|---|
| Parents deceased with no will | Court appoints guardian |
| Dispute over guardianship | Court decides |
| Children's Aid involvement | Court-ordered guardianship |
| Parents incapable | Court appoints guardian |
Court documents typically require affidavits.
Guardianship of Incapable Adults
When adults cannot manage their own affairs due to mental incapacity, there are several pathways to guardianship.
Power of Attorney (Prevents Need for Guardianship)
If someone has properly executed Powers of Attorney before becoming incapable:
- Power of Attorney for Property — For financial/property decisions
- Power of Attorney for Personal Care — For health/personal decisions
This is the preferred approach — planning ahead avoids court involvement.
Court-Appointed Guardian of Property
When someone is incapable and has no Power of Attorney:
Required documents include:
| Document | Description |
|---|---|
| Application to court | Formal court application |
| Affidavit of applicant | Your sworn statement |
| Capacity assessment | From designated assessor |
| Management plan | How you'll manage their property |
| Bond (often required) | Financial guarantee |
Statutory Guardian of Property
The Public Guardian and Trustee automatically becomes guardian when:
- Someone is found incapable during a capacity assessment
- No Power of Attorney exists
- No family/friend applies
Family can then apply to replace the statutory guardian.
Guardian of the Person
Similar to guardian of property, but for personal decisions:
| Document | Description |
|---|---|
| Application to court | Formal application |
| Affidavit | Supporting your application |
| Capacity assessment | Confirming incapacity for personal decisions |
| Guardianship plan | How you'll make decisions for them |
Required Affidavits for Guardianship
Affidavits are sworn statements used extensively in guardianship matters:
Affidavit in Support of Application
Your main statement explaining:
- Your relationship to the person
- Why guardianship is needed
- Your suitability as guardian
- Your plans for the person/property
Affidavit of Service
Proves that required people were notified of the application:
- The incapable person
- Family members
- The Public Guardian and Trustee
- Others as required
Affidavits from Collateral Sources
Statements from others supporting the application:
- Family members
- Friends
- Healthcare providers
- Financial institutions
Affidavit of Assets and Liabilities
Details the incapable person's:
- Assets
- Debts
- Income
- Expenses
Capacity Assessments
A capacity assessment by a designated assessor is usually required:
What It Includes
- Interviews with the person
- Medical records review
- Assessment of decision-making ability
- Written report
Using the Assessment
- Original goes to court
- Certified copies for other purposes
- May need to be updated periodically
Documents for Ongoing Guardianship
Once appointed as guardian, you'll need ongoing documentation:
For Guardian of Property
| Document | When Needed |
|---|---|
| Management plan | At appointment |
| Annual accounting | Yearly |
| Receipts and records | Ongoing |
| Affidavits for court | As required |
For Guardian of the Person
| Document | When Needed |
|---|---|
| Guardianship plan | At appointment |
| Annual reports | May be required |
| Medical consents | As needed |
| Statutory declarations | For various purposes |
Temporary Substitute Decision-Making
For emergency situations, hospitals and care facilities may need:
Emergency Consent
Immediate family members can sometimes consent to emergency treatment without formal guardianship.
Section 20 Notices
When someone is found incapable of managing property during a capacity assessment, notices must be given.
Affidavits of service may be required.
Guardianship for Children Traveling Internationally
When children travel with guardians (not parents):
Travel Documentation
| Document | Purpose |
|---|---|
| Travel consent letter | Parental permission |
| Guardianship letter | Proof of guardianship |
| Notarized authorization | For border officials |
| Medical authorization | For healthcare abroad |
These should always be notarized for international travel.
What to Include
- Child's full information
- Guardian's full information
- Parents' contact information
- Travel dates and destinations
- Emergency medical authorization
Custody vs. Guardianship
These terms are often confused:
| Term | Meaning |
|---|---|
| Custody | Typically refers to parenting arrangements after separation/divorce |
| Guardianship | Legal authority when parents are unable to act (death, incapacity) |
Custody is governed by family law; guardianship is governed by different legislation.
International Considerations
Foreign Guardianship in Canada
If you have guardianship from another country:
- May need recognition in Canada
- Certified copies of foreign orders
- Affidavits about foreign proceedings
- Authentication/apostille of foreign documents
Canadian Guardianship Used Abroad
If using Canadian guardianship documents internationally:
- Certified copies of court orders
- Authentication chain (notary → provincial → federal → embassy)
- Or apostille for Hague countries
See our guide on apostille vs. notarization.
Common Guardianship Mistakes
❌ Not Planning Ahead
The best approach is to have Powers of Attorney in place before incapacity. This avoids:
- Court costs
- Delays
- Family disputes
- Public Guardian involvement
❌ Incomplete Applications
Guardianship applications require extensive documentation. Missing documents cause delays.
❌ Not Serving All Required Parties
Court rules require notice to many people. Improper service can void the process.
❌ Not Understanding Ongoing Obligations
Guardians have legal duties:
- Acting in best interests
- Keeping records
- Filing accounts
- Getting court approval for major decisions
❌ Confusing Guardianship with POA
Power of Attorney only works if signed before incapacity. After incapacity, guardianship may be needed.
Costs Associated with Guardianship
Court Process Costs
| Item | Approximate Cost |
|---|---|
| Court filing fees | $200-400 |
| Legal fees | $2,000-10,000+ |
| Capacity assessment | $500-2,000 |
| Bond (if required) | Premium varies |
Notarization Costs
| Service | Approximate Cost |
|---|---|
| Affidavits | $30-45 each |
| Statutory declarations | $25-40 |
| Certified copies | $20-35 each |
| Notarized signatures | $25-40 |
How We Can Help
At Minute Notary, we assist with guardianship documentation:
- Affidavits — For court applications and service
- Statutory Declarations — For various guardianship purposes
- Certified True Copies — Of court orders, assessments, ID documents
- Notarized Signatures — On guardianship letters and authorizations
- Power of Attorney — Witnessing to prevent future guardianship needs
We understand the sensitive nature of guardianship matters and provide professional, compassionate service.
Need Help with Guardianship Documents?
Whether you're applying for guardianship or planning ahead with Powers of Attorney, we're here to help. Book an appointment with Minute Notary.


