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Spousal Support Forms in Ontario: Financial Statement Guide

Understand when an Ontario spousal support claim needs Form 13 or 13.1, what Form 13A adds, what to gather, and common mistakes to avoid.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • For a Form 8 application, a spousal support claim needs Form 13 (support claims only) or Form 13.1 (property and support claims).
  • Form 13A, the Certificate of Financial Disclosure, is also required, along with financial disclosure documents.
  • Agreements about support must be based on complete and honest financial disclosure or a court may set them aside.
  • Income for support purposes starts from the Child Support Guidelines definition, and some income must be adjusted.

Financial forms are the part of a support case that frustrates people most. They are long, they ask about everything, and the other side and the judge rely on them. Errors cause delays and can damage your credibility.

This guide explains which form applies to you, what the court expects to see, how income is generally counted, and mistakes worth avoiding. Always check the current version of each form and its instructions, since forms are updated from time to time.

Which form do you need?

When you start a case with a Form 8 application and claim spousal support, you need a financial statement. Use Form 13 if you are making support claims only, or Form 13.1 if you are making both property and support claims.

You also need Form 13A, the Certificate of Financial Disclosure, and financial disclosure documents are needed whenever a support claim is made.

FormWhen it is used
Form 13Financial statement for support claims only
Form 13.1Financial statement for property and support claims
Form 13ACertificate of Financial Disclosure, also required
Form 8The application these forms accompany

The same financial forms come up when you ask to change an existing order. A consent motion to change (Form 15C) goes with Form 13, Form 13A, Form 14B and a draft order on Form 25, while a contested motion to change (Form 15) goes with Forms 13, 13A and 25.

Why disclosure matters so much

Support depends on money, so both sides must be open about it. A separation agreement can set support without court, but it must be based on complete and honest financial disclosure, or a court may set it aside.

Under the Divorce Act, the court weighs each spouse's financial resources and needs, among other factors, when deciding support. How this applies if you are unmarried, or separated without divorcing, depends on your situation, so it is worth confirming with a lawyer. If the numbers on your form are incomplete, the court cannot properly assess your finances, and the other side may question everything else you say.

What to include and what to attach

Which supporting documents must be attached depends on the current version of the form and its instructions, so read them before you file. Financial disclosure documents are needed whenever a support claim is made.

If you are unsure whether a document is needed, ask a lawyer or the court office rather than leaving it out. A missing document is easier to fix before filing than after the other side points it out.

How income is generally counted

The Spousal Support Advisory Guidelines are not law, but judges often base decisions on them. For those guidelines, income starts from the definition of income in the Federal Child Support Guidelines. Non-taxable income must be grossed up. Union dues can be deducted, and capital gains and dividends use actual amounts.

Other income can be harder. If a bonus is uncertain, a court may look at ranges at two incomes. A court may attribute pre-tax corporate income to a payor for child support but is less willing to do so for spousal support. If you own a business or have variable pay, ask an accountant or lawyer how to present it.

Online calculators can help with rough numbers, but Justice Canada says they may help only with simple calculations and complex cases, such as those with tax effects, usually need dedicated software. Ontario.ca notes its own calculator considers only employment income.

Common mistakes to avoid

What to do next

Frequently asked questions

What is the difference between Form 13 and Form 13.1?

Form 13 is the financial statement for support claims only. Form 13.1 is used when you are making both property and support claims.

Do I need Form 13A as well?

Yes. For a Form 8 application with a support claim, Form 13A (Certificate of Financial Disclosure) is also required, along with financial disclosure documents.

Do I need these forms to change an existing support order?

Usually yes. A consent motion to change uses Form 13 and Form 13A among others, and a contested motion to change uses Forms 13, 13A and 25.

What happens if I leave out income?

It can seriously hurt your case. An agreement not based on complete and honest financial disclosure may be set aside by a court. Ask a lawyer how to handle unusual income before you file.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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