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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Family Law & Divorce Ontario » Calculating Spousal Support for Ontario Dentists Selling Their Practice

Calculating Spousal Support for Ontario Dentists Selling Their Practice

1 Jul 2026 3 min read No comments Family Law & Divorce Ontario
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Selling an Ontario dental practice requires dividing its value for equalization, but courts must carefully avoid double-dipping when setting ongoing spousal support. Professional business valuations are absolutely essential, and setting down a complex trial costs $445 CAD in basic court fees.

High-net-worth divorces involving dental, medical, or professional practices introduce incredibly complex financial rules. When an Ontario dentist decides to sell their practice during or after a separation, the transition impacts everything from immediate asset division to long-term spousal support. It is a highly specialized area of family law.

The most critical legal issue in these scenarios is avoiding the “double-dip”. 💰 In Ontario common law, it is generally considered unfair to treat a business as an asset to be divided during equalization, and then use the exact same asset (or the income generated directly from its sale) to calculate future support. Navigating this requires immense precision.

Step-by-Step Process in Ontario

Whether the dental practice is located in a busy Toronto commercial centre or a quiet Ottawa suburb, the legal principles regarding property division remain consistent. Given the high stakes, most professionals find it mandatory to search our directory and retain a senior law firm with extensive experience in corporate family law.

Step 1: Hiring a Chartered Business Valuator

Before any negotiations can begin, the exact worth of the dental practice must be determined. 📄 You will need to hire a Chartered Business Valuator (CBV) to assess the goodwill, patient lists, and equipment. This establishes the fair market value for the date of separation.

Step 2: Calculating the Equalization Payment

Ontario law requires the equalization of Net Family Property. The value of the dental practice is factored into the owning spouse’s net worth. The spouse with the higher net worth must generally pay half the difference to the other spouse to equalize the marital growth.

Step 3: Assessing Post-Sale Income Streams

Once the practice is sold, the dentist’s income structure will fundamentally change. 🔍 A judge must determine if the dentist is retiring entirely, or if they are staying on as an associate. If the proceeds of the sale were already equalized, the interest generated from those specific funds usually cannot be double-counted for support.

Step 4: Applying the Support Guidelines

Finally, the remaining eligible income is run through the Spousal Support Advisory Guidelines (SSAG). 📍 This step must be handled by an experienced lawyer who will advocate for the proper exclusions, ensuring the final monthly figure filed at the Superior Court of Justice is fair and legally sound.

How Much Does it Cost in Ontario?

Litigating the division and support implications of a professional practice is an expensive endeavour due to the required experts. Here are the anticipated costs in Canadian dollars:

  • Business Valuation Fees: A comprehensive CBV report for a dental practice typically costs between $5,000 and $15,000 CAD.
  • Court Filing Fees: The basic Application fee is $214 CAD, with an additional $445 CAD required if the case is set down for trial.
  • Senior Lawyer Retainers: High-net-worth family lawyers often require retainers starting at $10,000 to $20,000 CAD.
  • Corporate Counsel: You may also need a corporate lawyer to handle the actual sale of the practice, adding separate hourly fees.
Legal ConceptApplication in Dentist Divorces
Equalization (Asset Division)The value of the practice itself is split as property between the spouses.
Double-Dipping (Support)The court tries to avoid using the same equalized value to fund future spousal support.

How Long Does the Process Take?

Dividing professional practices is incredibly time-consuming. 🕑 The business valuation alone can take 2 to 4 months as accountants review years of tax returns and patient data. If the spouses can negotiate a settlement, expect the entire process to take 8 to 12 months. If the dispute escalates to a full trial at the Superior Court of Justice, it is common for the litigation to stretch over 2 to 3 years.

Frequently Asked Questions (FAQ)

What exactly is the rule against double-dipping?

It is a legal principle stating that if the value of a business was already divided and paid out as an asset during equalization, the income derived from liquidating that specific asset should generally not be used again to calculate spousal support.

Does selling my practice mean spousal support ends?

Not necessarily. If you continue to work as an associate, your new clinical income will still be subject to support calculations. If you retire completely, your support obligations may be reviewed and potentially reduced.

Can I sell the practice for a low price to a friend to avoid paying?

No. Family courts have strict rules against intentionally depleting assets. If you sell the practice below fair market value, a judge can still impute its true value into your equalization calculations.

Are patient lists considered a marital asset?

Yes, the goodwill of the practice, which heavily includes the established patient list, is given a monetary value by the business valuator and factored into the final equalization payment.

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