Many Alberta businesses operate and advertise under catchy trade names such as “ABC Drywall,” or “XYZ Transportation Services,”. Trade names are valuable; they build brand recognition, make marketing easier, and help customers remember you.
However, our Calgary business lawyers at OP Lawyers LLP regularly see a serious and avoidable legal problem: business owners signing contracts, quotes, work orders, and invoices using only the trade name instead of the corporation’s actual legal name (for example, “123456 Alberta Ltd.”). When that happens, the business owner, shareholder, or director can unintentionally expose themselves to personal liability.
In other words, even if you have a properly incorporated company behind the scenes, you may not get the benefit of limited liability if you do not clearly contract in the company’s full and correct legal name. In a dispute, a court may find that you personally – not your company – are on the hook. Our Calgary business lawyers at OP Lawyers LLP see this frequently in construction, transportation, consulting, and small retail operations.
Below, our Calgary business lawyers explain the basic law, why using only a trade name is so risky, and what practical steps you should take to protect yourself.
THE LAW
Under Alberta’s Business Corporations Act and common law, a corporation is a separate legal person. That separation is what normally shields shareholders and directors from personal liability for corporate contracts and debts. But that protection only works if it is clear that the corporation – not the individual – is the actual contracting party. The Business Corporation Act requires the corporation to disclose its name properly in its documents.
In practice, this means the corporation must clearly identify itself by its full legal name wherever it is entering into legal relationships. When your corporation issues or signs:
- Contracts and subcontracts
- Purchase orders and work orders
- Invoices and credit applications
- Quotes, estimates, and service agreements
- Guarantees and other binding documents
The documents should state the exact corporate name as set out on the certificate of incorporation or on a current corporate search. For a numbered company, that means using the full name such as “123456 Alberta Ltd.” or “7891011 Alberta Inc.” – not just the trade name or a short form.
It is important to note that the other contracting party does not have a legal duty to conduct corporate registry searches, dig through government records, or perform their own due diligence just to figure out who they are really dealing with.
The law places the responsibility squarely on the person who wants to rely on the corporation’s separate identity. If you want to say, “I am not personally liable; it’s my company that is liable,” you must make that corporate identity known from the beginning of the business relationship.
If all you ever show is a trade name – for example, signing only as “ABC Drywall” and never properly disclose the true corporate name and status, then the law can treat you as having contracted personally. Courts in Alberta have repeatedly confirmed that:
- Simply using a trade name is not enough to tell the other side they are dealing with a limited company or limited partnership.
- The person who signs and presents themselves as the contracting party can be treated as the principal, not merely as a representative.
- There is no onus on the other side to investigate or guess that there might be a corporation behind the trade name.
The bottom line that our Calgary business lawyers at OP Lawyers LLP witness many cases that: if you do not clearly and specifically identify the corporation at the time of contracting, you run a serious risk that a court will hold you personally responsible.
IMPLICATIONS FOR BUSINESS OWNERS AND DIRECTORS
For Alberta business owners, the implications are substantial. Our Calgary business lawyers at OP Lawyers LLP frequently encounter the following scenarios:
- The “I thought my trade name was enough” problem
A contractor operates as “XYZ Transportation Services,” but the actual corporation is “1X2X45X Alberta Ltd.” All contracts, invoices, and emails only ever refer to “XYZ Transportation Services.” The owner signs as “John Doe, XYZ Transportation Services,” without mentioning the corporation at all.
In a payment dispute, the customer sues “John Doe operating as XYZ Transportation Services.” When the case reaches court, there is no clear evidence that the customer knew or agreed to contract with “987654 Alberta Ltd.” Instead, the evidence shows they contracted with John Doe personally, under a trade name. John Doe may be personally liable.
- The shareholder or director who didn’t intend to sign personally
A director signs a major supply agreement as “Jane Smith, President, ABC Drywall.” The true corporate name “14345 Alberta Inc.” never appears anywhere in the contract, even though the company is properly incorporated.
If the supplier later sues, they may argue that they contracted with Jane Smith personally, trading as “ABC Drywall.” Jane’s intention to sign “on behalf of the company” may not save her if the corporate name was never clearly disclosed and identified as the contracting party.
- The limited partnership or complex structure hidden behind a trade name
Some businesses operate with layered structures (for example, a general partner corporation and a limited partnership) but only present a simple trade name to the outside world. Contracts are signed just under the trade name, and no one specifies whether the contracting party is the general partner, the limited partnership, or some other entity.
In a dispute, this can backfire. Courts are wary of allowing businesses to “pick and choose” which entity will be liable after the fact. If the structure was never disclosed to the other party, the court can hold multiple entities – and, in some cases, individuals – liable under the contract.
How to protect yourself: practical steps
Our Calgary business lawyers at OP Lawyers LLP recommend a few simple but crucial practices to avoid these problems:
- Always use the full legal name of your corporation in contracts
On every contract, quote, work order, invoice, and formal agreement, identify the party as your corporation’s exact legal name. For example:
- “123456 Alberta Ltd. operating as ‘ABC Drywall’”
- “XYZ Interior Systems Inc. operating as ‘XYZ Interior Design’”
By doing this, you:
- Make it clear that the corporation is the contracting party.
- Preserve the corporate shield for shareholders and directors.
- Still maintain the marketing benefits of your trade name.
- Sign in a representative capacity, not in your personal capacity
When you sign, make sure your signature block clearly shows that you are signing as an authorized representative of the corporation, not individually. For example:
123456 Alberta Ltd.
operating as “ABC Drywall”
Per: _________________________
Name: John Doe
Title: Director
This helps demonstrate that you are acting as an agent of the corporation, not as the principal. Our Calgary business lawyers routinely update clients’ precedent contracts to include clear signature blocks like this.
- Ensure your corporate name appears on all key documents
Beyond the core contract, your corporation’s full name should appear on:
- Letterhead, email footers, and website legal notices
- Invoices, purchase orders, and credit applications
- Guarantees, security agreements, and personal indemnities (where applicable)
Remember: the safest practice is consistency. The more consistently you present the actual corporate name, the less room there is for a dispute later about who the real contracting party is.
- Review existing templates and common practices
Many businesses reuse old templates, or rely on informal emails and text messages, which can cause confusion. Our Calgary business lawyers recommend:
- Reviewing all standard forms and templates to ensure the corporate name is correctly set out.
- Training staff who issue quotes or sign smaller agreements to use the corporation’s proper name.
- Avoiding the habit of signing with only the trade name on any binding document.
WHAT IF YOU’VE ALREADY BEEN USING ONLY A TRADE NAME?
Many Alberta business owners only realize this issue once a dispute arises. For example, when they are sued personally, or when a counterparty challenges who is liable under a contract signed years earlier.
If you have already entered into contracts, leases, guarantees, or other commitments using only a trade name, it is important to seek legal advice before a problem escalates. Depending on your situation, it may be possible to:
- Clarify and document the intended contracting party with the other side going forward.
- Amend or replace key contracts to identify the corporation properly.
- Restructure your contracting and invoicing practices to reduce ongoing risk.
- Develop a litigation strategy if you are already facing allegations of personal liability.
Our Calgary business and civil lawyers are experienced in commercial disputes and corporate litigation. We regularly advise shareholders, directors, and business owners on personal liability issues arising from the use of trade names, informal contracting, and unclear corporate structures.
If you are concerned that your current contracts or business practices may expose you personally, or if you have already been sued in connection with a business obligation, contact our Calgary business lawyers at OP Lawyers LLP for a consultation. We can review your documentation, assess your risk, and help you put in place practical, cost‑effective protection for you and your company going forward.
Disclaimer: This blog post is intended for informational purposes only and does not constitute legal advice. For advice specific to your circumstances, please consult a qualified Calgary business lawyer at OP Lawyers LLP or another legal professional.