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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Family Law & Divorce Ontario » Divorce & Separation Guides Ontario » How to Find and Submit Tax Returns to Opposing Counsel via Financial Disclosure in Ontario

How to Find and Submit Tax Returns to Opposing Counsel via Financial Disclosure in Ontario

9 Jun 2026 5 min read No comments Divorce & Separation Guides Ontario
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In Ontario, mandatory financial disclosure requires you to provide your last three years of T1 General tax returns and Notices of Assessment (NOAs). You can easily download these official documents directly from your secure CRA My Account portal before formally submitting them alongside your Form 13 or Form 13.1.

When you are going through a separation in Ontario, complete financial transparency is an absolute legal requirement, not a polite request. Whether you are trying to fairly calculate spousal support, determine child support, or strictly equalize your net family property, the Superior Court of Justice demands undeniable proof of your income. The most reliable and universally accepted proof is your official tax documentation from the Canada Revenue Agency (CRA).

Many people understandably feel incredibly overwhelmed when an opposing law firm suddenly demands years of financial records. You might have misplaced your old paper tax files or completely lost touch with your former accountant. Fortunately, the Canadian government has digitized almost everything, making it vastly easier to gather these required documents from your laptop. Let us walk through the exact steps to locate, download, and properly submit your vital tax information to your former partner’s lawyer.

The Step-by-Step Financial Disclosure Process in Ontario

Whether you live in Toronto, Mississauga, or a smaller municipality like Sudbury, the Family Law Rules dictate a very specific process for sharing your financial life. Gathering your tax documents is always the very first, and most important, foundational step.

Step 1: Logging into Your CRA My Account

To safely retrieve your historical tax documents, you must immediately access your CRA My Account online. If you do not already have an active login, you can easily sign in using a trusted Sign-In Partner (such as your regular Canadian online banking portal) or your Service Canada credentials. 💻 If this is your very first time setting up the account, the CRA may strictly require mailing you a physical security code, which can unfortunately delay your disclosure by up to two weeks.

Step 2: Downloading Your Notices of Assessment (NOAs)

Once you are securely logged into the CRA portal, navigate directly to the “Tax Returns” section. The opposing counsel will explicitly demand your Notices of Assessment for the last three consecutive years. The NOA is the official government receipt that formally proves your exact Line 15000 (total income) and confirms that your taxes were actually filed and approved. You can conveniently save these files directly to your computer as clean PDF documents.

Step 3: Accessing Your T1 General Returns

Providing just the NOAs is usually not enough. You must also provide the complete T1 General for each of those three years. The T1 General is the highly detailed, multi-page document that breaks down exactly how your income was calculated, showing specific business expenses, RRSP contributions, and capital gains. In the CRA portal, you can find this detailed breakdown by clicking “View return” for each specific tax year and generating a PDF copy.

Step 4: Completing the Required Financial Statement

You do not simply email raw tax documents to your ex-partner. In Ontario, these files must be formally attached to a sworn Financial Statement. If your case only involves support claims, you will use a Form 13. If property division (equalization) is involved, you must use the much longer Form 13.1. Your lawyer will expertly help you fill out this complex form, explicitly referencing the exact income figures found on your downloaded CRA documents.

Step 5: Swearing and Serving the Documents

Before your tax returns are officially handed over to the opposing counsel, you must swear an oath (or firmly affirm) in front of a notary public or your lawyer that the Financial Statement is 100% true and accurate. Once signed, your law firm will officially “serve” the entire package to your former spouse’s legal team, ensuring it is properly filed with the local family court.

How Much Does it Cost in Ontario?

While gathering your own tax documents is generally free, preparing the formal disclosure package usually involves some professional fees.

RequirementEstimated Cost (CAD)
CRA My Account Downloads$0 (Completely free government service)
Accountant Fees (If you are behind on taxes)$300 to $1,500+ to aggressively catch up on unfiled years
Law Firm Drafting Fees (Form 13.1)$1,500 to $3,500+ for a lawyer to meticulously draft and swear your financial statement

How Long Does the Process Take?

Under the Ontario Family Law Rules, you generally have exactly 30 days to serve your completed Financial Statement and tax returns after receiving an Application. If you already have full access to your CRA My Account, downloading the PDFs takes mere minutes. However, if you are several years behind on actually filing your Canadian taxes, you must urgently hire an accountant. Catching up on complex tax arrears can drastically stall your divorce process by 1 to 3 months.

Frequently Asked Questions (FAQ)

What if I simply haven’t filed my taxes for the last three years?

You cannot use your own failure to file as a legal excuse to avoid financial disclosure. The family court will strictly order you to formally file your outstanding taxes immediately. If you stubbornly delay, the judge can aggressively impute your income, meaning they will essentially guess what you earn based on your lifestyle.

Can I legally black out sensitive information on my T1 General?

Generally, no. Complete transparency is required. However, if your tax return includes the Social Insurance Number (SIN) or private financial details of a brand new spouse, your lawyer can carefully redact (black out) the new partner’s specific information before serving the documents.

Do I still have to provide tax returns if we completely agree on everything?

Yes. Even if you are pursuing a peaceful, uncontested divorce and drafting a collaborative Separation Agreement, both parties must completely exchange their tax documents. Without verified financial disclosure, any agreement you sign is legally vulnerable and could be easily overturned in court later.

What if my spouse owns a business and their T1 doesn’t show their real income?

If your spouse is self-employed or owns a corporation, a standard T1 General is often insufficient. Your law firm will aggressively demand extensive corporate tax returns (T2), detailed financial statements, and business bank records to ensure they are not illegally hiding income inside the company.

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