Two people silhouetted face to face against a blue sky, representing a business partnership breakdown or suspected misconduct between partners in Ontario and BC

Theft in a Business Partnership in Ontario and BC: Legal Options and How to Protect Your Business

Date: June 10, 2026

Discovering that a business partner has been stealing from the partnership is one of the most destabilizing situations a business owner can face. The relationship is built on shared trust and mutual access to finances, assets, and information. When one partner abuses that access, the practical and legal response needs to be immediate, strategic, and careful: acting too fast without advice can destroy evidence, alert the partner to move assets, or complicate the civil and criminal options available.

This article explains what theft and financial misconduct by a business partner looks like in practice, the fiduciary duties partners owe each other in Ontario and BC, the civil and criminal remedies available, urgent steps to take when misconduct is discovered, and how partnership dissolution fits into the picture. For broader context on partnership conflicts, see our guide to understanding partnership disputes in Ontario and BC.

The most important first step
Do not confront the partner before getting legal advice. A partner who knows they are suspected will move assets, destroy records, and take steps that make recovery significantly harder. Secure what you can access, get legal advice immediately, and assess whether urgent court relief is needed before any confrontation takes place.

The same principle that applies to corporate director misappropriation applies here: speed and discretion in the first hours after discovery are often what determines whether assets can be recovered or are permanently beyond reach.

What constitutes theft in a business partnership

Theft and financial misconduct by a business partner typically involves the misuse of authority or access that the partnership structure itself provides. Because partners often share equal access to financial accounts, business records, and assets, the misconduct can be harder to detect than theft by an employee and can continue for longer before it is discovered.

Financial embezzlement Diverting partnership funds to personal accounts, falsifying financial records to conceal payments, creating fictitious expenses, or manipulating accounts to disguise personal withdrawals as legitimate business costs. This is the most common form of partner financial misconduct and can continue for years where internal controls are weak.
Physical asset theft Removing partnership property, inventory, or equipment without authorization or at below-market value. Also includes transferring partnership assets to the partner personally or to a related entity as part of a broader scheme to extract value from the business.
Diversion of business opportunities Taking corporate or partnership opportunities for personal benefit without disclosure or consent, such as directing business contracts to a competing company the partner controls or benefiting personally from transactions that should have been conducted through the partnership.
Misappropriation of confidential information Using partnership trade secrets, client lists, pricing information, or other confidential business information for personal benefit or to establish a competing business. This often accompanies a partner's exit from the business and may trigger both civil claims and obligations under non-competition and non-solicitation provisions in the partnership agreement.
Undisclosed conflicts of interest Entering into transactions that benefit the partner or related parties without disclosure to and consent from the other partners. This includes self-dealing transactions, preferential payment of related-party invoices, and side arrangements with suppliers or customers that channel value away from the partnership.
Falsification of partnership records Altering financial statements, expense records, invoices, or other partnership documents to conceal misconduct or to distort the partnership's financial position for personal benefit, such as in the context of a buyout negotiation or dissolution proceeding.

The fiduciary duties partners owe each other

Partners owe each other and the partnership a fiduciary duty of loyalty, honesty, and good faith. In Ontario, partnership duties are governed by the Partnerships Act, RSO 1990, c P.5. In BC, they are governed by the Partnership Act, RSBC 1996, c 348. Both statutes impose specific obligations on partners that form the legal foundation for claims arising from partner misconduct.

The core partnership duties include an obligation to render true accounts and full information of all things affecting the partnership to any partner, an obligation to account for and pay over to the partnership any personal profits made from partnership transactions or use of partnership property without consent, and an obligation not to compete with the partnership without the consent of the other partners. These statutory duties apply regardless of whether the partnership agreement expressly addresses them, and they cannot be contracted out of entirely.

Where the misconduct involves a breach of these duties, the civil claim is founded directly on the statute and on the common law of fiduciary obligations. The partner who steals is not merely breaching a contract: they are breaching a relationship of trust that the law treats with particular seriousness. Remedies are correspondingly broad.

A partner who profits from the partnership relationship without consent is required to account for and disgorge those profits to the partnership regardless of whether the other partners suffered a direct financial loss. The account of profits remedy is one of the most powerful tools in a partner misconduct claim because it does not require proof of loss: it requires only proof of unauthorized personal profit.

Detecting partner theft: warning signs

Partner financial misconduct is often concealed through the same records and systems the partner controls, which makes detection genuinely difficult. The following warning signs warrant immediate attention and, where present in combination, justify engaging a forensic accountant before any confrontation.

  • Unexplained discrepancies between bank statements and the partnership's internal financial records, particularly recurring small discrepancies that individually appear insignificant
  • Unusual payment patterns including payments to vendors that cannot be independently verified, payments just below approval thresholds, or a pattern of round-number transfers
  • Resistance to financial transparency including a partner who controls financial records and resists independent review, delays in producing financial statements, or reluctance to engage external accountants
  • Lifestyle inconsistency where a partner's personal expenditure appears inconsistent with their share of partnership distributions
  • Missing inventory or assets that cannot be accounted for through normal business activity
  • Sudden behavioural changes particularly around financial discussions, access requests, or partnership governance matters

Suspect your business partner is stealing in Ontario or BC?

Do not confront them and do not alter any records. Every action taken before legal advice can complicate recovery. A Mareva injunction can be obtained urgently to freeze assets where there is risk of dissipation. Get legal advice today, not after the next partnership meeting.

Call: 1-800-771-7882 Get Immediate Advice on Your Situation

Urgent steps when misconduct is discovered

1

Get legal advice before taking any action

The sequence of steps taken in the first hours and days after discovering misconduct significantly affects what remedies are available and whether they succeed. A confrontation that alerts the partner, a unilateral change to bank authorities that constitutes a breach of the partnership agreement, or a disclosure to third parties that creates defamation exposure can all complicate an otherwise strong position. Get legal advice first.

2

Secure and preserve evidence

Gather and preserve copies of all financial records, bank statements, invoices, expense reports, and communications you have legitimate access to as a partner. Do not alter, annotate, or destroy anything. Evidence that is lost or appears to have been tampered with creates problems in subsequent proceedings. Where electronic records are involved, consider engaging a digital forensics specialist before the partner has an opportunity to access or delete relevant files.

3

Engage a forensic accountant

A forensic accountant can trace financial irregularities, quantify the total amount misappropriated, identify the methods used, and produce a report that can be used in civil or criminal proceedings. Engaging a forensic accountant early, before the partner has an opportunity to further alter records, produces the most complete picture of the misconduct and strengthens the civil and criminal case.

4

Assess whether urgent court relief is needed

Where there is a real risk that the partner will move or dissipate assets before proceedings are commenced, a Mareva injunction to freeze those assets should be sought urgently. See our guide to Mareva injunctions in commercial litigation for how the process works. An Anton Piller order for evidence preservation may also be appropriate where there is a risk that records will be destroyed.

5

Consider the criminal referral question strategically

Partner theft can give rise to criminal charges including theft under section 322, fraud under section 380, and breach of trust under section 336 of the Criminal Code of Canada. Whether to report to law enforcement at this stage is a strategic decision. Criminal investigations can affect the timing and conduct of civil recovery, and civil and criminal proceedings interact in ways that require careful management. Get advice on the sequencing before making a report.

Civil remedies available in Ontario and BC

Account of profits and disgorgement

A partner who has made unauthorized personal profits from the partnership is required to account for and disgorge those profits. This remedy does not require proof of loss to the partnership: it focuses on the benefit the partner received rather than the harm caused. It is particularly powerful where the misconduct involved diverting business opportunities or receiving undisclosed commissions, because the full value of the benefit must be returned regardless of what the partnership might otherwise have earned.

Damages for breach of fiduciary duty

Where the misconduct has caused a quantifiable financial loss to the partnership, a damages claim for breach of fiduciary duty can recover the full amount of that loss. The measure of damages in fiduciary cases is broader than in ordinary contract claims: the innocent party is entitled to be put in the position they would have been in had the breach not occurred, including losses flowing from the breach that may not have been foreseeable at the time the duty was breached.

Constructive trust

Where misappropriated funds can be traced into specific assets held by the partner, courts can impose a constructive trust, treating the partner as holding those assets on behalf of the partnership. This is particularly valuable where the partner has invested stolen funds in appreciating assets: the partnership recovers the appreciated value, not just the original amount taken. It is also valuable where the partner is insolvent, as a constructive trust gives the partnership a proprietary claim that ranks ahead of the partner's unsecured creditors.

Mareva injunction

An urgent application to freeze the partner's assets to prevent dissipation before judgment can be obtained. Available in both Ontario and BC where there is a strong prima facie case and real evidence that assets are at risk. Acts as the immediate protective step while the main proceedings are determined. The partner cannot deal with frozen assets without court authorization, which preserves the ability to enforce any judgment obtained.

Partnership dissolution

In serious cases of partner misconduct, dissolution of the partnership is both available and often the appropriate outcome. In Ontario, a court can order dissolution under the Partnerships Act where a partner has been guilty of conduct that prejudicially affects the carrying on of the business, or where circumstances have arisen that make it just and equitable to dissolve. In BC, equivalent grounds exist under the Partnership Act. Dissolution involves winding up the partnership's affairs and distributing the net assets after settling all accounts, including claims against the defaulting partner.

Criminal proceedings

Where the misconduct meets the criminal threshold, reporting to law enforcement and supporting a criminal prosecution is an option. Criminal conviction can result in restitution orders requiring the partner to repay stolen amounts in addition to any criminal sentence. Civil and criminal proceedings can run simultaneously. The decision on whether and when to involve law enforcement involves strategic considerations about the sequencing of civil recovery and the evidentiary implications of parallel proceedings.

Dealing with a partner you believe is stealing from your business in Ontario or BC?

The first steps taken after discovery determine whether assets can be recovered and evidence preserved. Every hour matters when a partner is moving funds. Get advice today before taking any action.

Get Urgent Advice on Your Partnership Dispute Or call us: 1-800-771-7882

Practical takeaways

Do not confront the partner before getting legal advice. A partner who knows they are suspected will move assets and destroy evidence. Secure records you have access to and get legal advice immediately.
Partners owe each other a fiduciary duty of loyalty and good faith under Ontario's Partnerships Act and BC's Partnership Act. These duties include an obligation to account for all personal profits made from partnership transactions without consent.
Civil remedies include account of profits, damages for breach of fiduciary duty, constructive trust over specific assets, Mareva injunction to freeze assets, and partnership dissolution. These remedies can be combined and pursued simultaneously.
Partner theft can give rise to criminal charges under the Criminal Code of Canada including theft, fraud, and breach of trust. The decision on when to involve law enforcement requires strategic advice given the interaction between civil and criminal proceedings.
A forensic accountant engaged early, before the partner can further alter records, produces the most complete picture of the misconduct and the strongest evidentiary foundation for civil and criminal proceedings.
Courts can order partnership dissolution in Ontario under the Partnerships Act and in BC under the Partnership Act where a partner's conduct has prejudicially affected the business or where dissolution is just and equitable.

Frequently asked questions

What constitutes theft by a business partner in Ontario and BC?

Theft by a business partner occurs when a partner misuses their authority or access for personal gain in breach of their fiduciary duty. Common forms include financial embezzlement, falsifying records, diverting funds to personal accounts, removing physical assets, misappropriating confidential information, and diverting business opportunities. These acts give rise to both civil claims and potentially criminal charges.

What civil remedies are available against a partner who steals?

Civil remedies include account of profits and disgorgement, damages for breach of fiduciary duty, constructive trust over specific assets traced from the misconduct, a Mareva injunction to freeze assets urgently, and partnership dissolution. Civil and criminal proceedings can run simultaneously. Acting quickly is essential to preserve these remedies and prevent asset dissipation.

Can a business partner be criminally charged for theft in Canada?

Yes. Partner theft can give rise to criminal charges under the Criminal Code of Canada including theft under section 322, fraud under section 380, and breach of trust under section 336. Whether and when to report to law enforcement is a strategic decision that should be made with legal advice given the interaction between civil recovery and criminal proceedings.

What is a partner's fiduciary duty in a business partnership?

Partners owe each other a fiduciary duty of loyalty, honesty, and good faith. Under Ontario's Partnerships Act and BC's Partnership Act, this includes obligations to render true accounts, account for personal profits from partnership transactions, and not compete with the partnership without consent. These duties apply regardless of what the partnership agreement says and cannot be entirely contracted out of.

What should I do first if I suspect my business partner is stealing?

Get legal advice immediately before taking any other steps. Do not confront the partner, do not alter records, and do not unilaterally change bank authorities or access permissions without advice. Secure copies of financial records you have legitimate access to, consider engaging a forensic accountant, and assess with your lawyer whether urgent court relief such as a Mareva injunction is needed to freeze assets before they are moved.

Suspect your business partner is stealing in Ontario or BC? Tell us what's happening.

Whether you have just discovered financial irregularities, are facing a partnership breakdown driven by misconduct, or need urgent legal steps to protect the business while the situation is assessed, Achkar Law advises on business partnership disputes across Ontario and British Columbia. We will assess your position and advise on the steps that protect both your immediate interests and your long-term recovery options.

Call us at 1-800-771-7882 or fill out the form below and we will be in touch.