Affidavit vs Statutory Declaration Ontario (Differences You Should Know)

Ontario Legal Rules for Affidavits vs Statutory Declarations

One of the most important Ontario rules is that affidavits and statutory declarations are not interchangeable. An affidavit is a written statement confirmed by oath or affirmation, while a statutory declaration is a solemn declaration made in the form required by the applicable law or authority. Using the wrong format can cause a court, government office, immigration authority, or other receiving organization to reject the document or refuse to use it for the intended purpose.

Another major Ontario-specific rule involves remote commissioning. Ontario permits remote administration through O. Reg. 431/20 when its conditions are met. The current regulation requires the oath or declaration to be administered through an electronic communication method that allows the participants to see, hear and communicate with each other in real time throughout the transaction, together with the other requirements set out in the regulation.

These rules matter in real life because affidavits are commonly used in court proceedings, while declarations may be required for government, institutional, insurance, business or other administrative purposes. Even technical mistakes—such as signing before the authorized person administers the oath or declaration—can create problems with the document and delay an application or proceeding. Use the Ontario affidavit and statutory declaration template as a starting point, but always check the requirements of the authority receiving your document.

Affidavit vs Statutory Declaration

Key Difference in One Line

• Affidavit = a written statement confirmed by oath or affirmation
• Statutory declaration = a solemn declaration made in the form required by the applicable law or authority

This may sound small, but legally it matters a lot.

An affidavit is commonly used as evidence in court proceedings, while statutory declarations are often used for administrative or official purposes. Neither document is automatically “stronger” in every situation. The required document depends on the rules, statute, form or authority governing the particular matter.

Affidavits and statutory declarations are both formal legal statements, but they serve different purposes under Ontario law. To understand how affidavits are structured, you can review the main affidavit template resource.

What Is an Affidavit in Ontario (And When You Need It)

An affidavit is a written document where you state facts and confirm them by oath or affirmation. Under Ontario law, an affirmation can have the same force and effect as an oath.

In many affidavit situations, it is used as evidence. That means judges and lawyers may consider it when making decisions, subject to the applicable rules of evidence and procedure. Because of this, the commissioning process must be followed properly.

You will usually need an affidavit in situations like:

• Family law cases such as divorce or child custody
• Civil disputes
• Immigration processes where the relevant application specifically requires an affidavit
• Proving facts like identity or events where the receiving authority requires an affidavit

A commissioner for taking affidavits or another authorized person must administer the oath or affirmation and satisfy themselves of the genuineness of the signature before signing the jurat. If the applicable commissioning process is not followed, the affidavit may create validity or admissibility problems.

One important legal point: if you knowingly provide a false statement in circumstances that meet the Criminal Code definition of perjury, it can constitute a criminal offence in Canada. So always be careful and honest.

What Is a Statutory Declaration in Ontario?

A statutory declaration is a formal written statement in which a person solemnly declares that the stated facts are true. It is not simply an informal statement without an oath.

Under Ontario’s Evidence Act, s. 43 provides a prescribed solemn-declaration form stating that the declarant makes the declaration conscientiously believing it to be true and knowing that it has the same force and effect as if made under oath.

Statutory declarations are commonly used for things like:

• Confirming identity or address
• Replacing lost documents where the relevant authority accepts a declaration
• Supporting government applications
• Insurance or business declarations where the relevant organization requires one

In everyday life, if you are not dealing with a court case but still need to confirm facts officially, a statutory declaration may be appropriate. However, do not assume that every non-court matter requires one. The document requested by the receiving authority should control.

Under Rule 39 of the Ontario Rules of Civil Procedure, evidence on a motion or application may be given by affidavit unless a statute or the Rules provide otherwise. The rule does not create a blanket prohibition against statutory declarations. Whether another form of evidence can be used depends on the applicable rules, legislation and circumstances. Administrative tribunals may also have statutory authority to admit relevant documentary evidence under their governing legislation.

When to Use Affidavit vs Statutory Declaration

Choosing between these two depends on the situation and, most importantly, on the requirements of the authority receiving the document. Many people make mistakes here, which can lead to rejection or delays.

Use an Affidavit When

You should generally use an affidavit when the applicable court rules, statute, prescribed form or legal proceeding requires or permits affidavit evidence. For example, if you are submitting evidence on an Ontario court motion or application, Rule 39 specifically addresses evidence by affidavit.

Use a Statutory Declaration When

You should use a statutory declaration when the applicable statute, government form, institution or other authority asks for a declaration. It is commonly used for confirming facts in government forms, identity verification, or administrative processes.

A simple way to remember:

• Court proceeding = an affidavit is commonly used when the applicable rules call for affidavit evidence
• Administrative or official requirement = use a statutory declaration when the applicable authority requires one

Commissioner of Oaths & Notary Rules in Ontario

Both affidavits and statutory declarations must be completed before a person who is legally authorized to administer the oath, affirmation or declaration, subject to Ontario’s remote-commissioning rules.

In Ontario, the following people may have authority to handle this process depending on the circumstances:

• Commissioner for Taking Affidavits
• Notary Public
• Lawyers or paralegals who have the applicable authority

Their job is not to investigate whether every factual statement in your document is true. Instead, the person administering the document must carry out the commissioning process required by law, including satisfying themselves of the genuineness of the signature and properly administering the oath, affirmation or declaration.

Many people think notarization is always required, but that is not true. A commissioner for taking affidavits may be sufficient unless the particular court, government office, institution or other receiving authority specifically requires a notary.

Key Components That Must Be Included

The required structure depends on the type of document, the applicable law, the court rules and the authority receiving it. Missing a required component can create problems with the document.

For an affidavit used in an Ontario proceeding, the document must follow the applicable court rules or prescribed form. Under Rule 4.06 of the Ontario Rules of Civil Procedure, an affidavit used in a proceeding must be in Form 4D, be expressed in the first person, identify the deponent as required, use consecutively numbered paragraphs, and be signed and sworn or affirmed in accordance with the Commissioners for Taking Affidavits Act.

For a statutory declaration, you still need your personal details, a clear statement of the facts being declared, the declaration wording required by the applicable law or form, and proper completion before an authorized person.

The most important thing is clarity. Always write facts in simple sentences and avoid opinions or assumptions when the document is intended to provide factual evidence.

Common Mistakes That Make These Documents Invalid

From practical experience, many documents can run into problems because of small errors. Some of the most common mistakes include:

• Signing the document before meeting the commissioner
• Using the wrong format (affidavit instead of declaration or vice versa)
• Missing required wording like an oath, affirmation or declaration clause
• Providing incorrect or misleading information
• Leaving out important personal details

Even a minor mistake can delay your application or create legal issues, especially when a court or government authority has specific requirements for the document.

Real-Life Examples

Let’s make this simple with real situations.

• If you are filing for divorce or dealing with an Ontario court proceeding, an affidavit may be required or permitted under the applicable court rules.
• If you lost your ID and need to confirm your identity, a statutory declaration may be appropriate if the relevant authority accepts or requests one.
• In immigration cases, the required document depends on the particular application. Some processes may require an affidavit, while others may ask for a declaration or another prescribed document.

Legal Risks You Should Know

These documents are legally serious. A person should not sign an affidavit or statutory declaration without making sure the information is accurate and the required process has been followed.

If you knowingly make a false statement in circumstances that meet the Criminal Code definition of perjury, it can lead to criminal charges. Criminal Code s. 131 addresses perjury, while s. 132 provides a maximum penalty of 14 years’ imprisonment. Section 134 separately addresses certain knowingly false statements made by affidavit, solemn declaration or deposition and makes that offence punishable on summary conviction.

Also, using the wrong document or failing to follow required procedures can lead to the document being rejected, challenged or not accepted for its intended purpose. This can result in delays, which may affect your case or application.

How to Fill the Template Correctly (Step-by-Step)

Filling the template correctly is simple if you first check the requirements of the authority that will receive it.

• Start by writing only true and clear facts. Use short sentences and number each point properly when the applicable form or court rule requires numbered paragraphs. Do not add unnecessary details.
• Do not sign the document in advance. Always wait until you are in front of the commissioner, notary or other authorized person, unless you are following the specific remote-commissioning process permitted by Ontario law.
• Carry a valid ID with you, as identification may be required by the person administering the document. Before signing, read the document carefully to make sure everything is correct.
• Taking a few extra minutes to review can save you from major problems later.

Affidavits, such as an Ontario sworn affidavit, must be sworn or affirmed before an authorized person, while declarations follow a different process. If you are preparing either document, it’s useful to understand how notarization works in Ontario.

FAQs

Is affidavit stronger than statutory declaration in Ontario?

Neither document is automatically stronger in every situation. An affidavit is commonly used as evidence where the applicable court rules require or permit affidavit evidence, while a statutory declaration is used where the applicable law, form or receiving authority calls for a declaration.

Can I use statutory declaration in court?

It depends on the particular court proceeding and the applicable rules or statute. For Ontario motions and applications, Rule 39 specifically addresses evidence by affidavit, so you should follow the document requirements of the applicable court rule or prescribed form.

Who can commission these documents in Ontario?

Depending on the circumstances, a Commissioner for Taking Affidavits, Notary Public, lawyer, paralegal or another person with the required legal authority can administer the oath, affirmation or declaration.

Is notarization mandatory?

Not always. A commissioner for taking affidavits may be enough unless the particular court, government office, institution or other receiving authority specifically requires notarization.

Can I write both in one document?

Do not combine the two formats unless the applicable law, prescribed form or receiving authority specifically allows it. The document should clearly follow the required affidavit or statutory-declaration format for the purpose for which it is being used.