Personal Guarantee vs. Co-Borrower: When Can a Business Owner Be Personally Liable for Corporate Debt?

Incorporating a business generally creates a legal separation between the corporation and the people who own it. That separation is one of the main reasons entrepreneurs incorporate. A corporation can borrow money, sign contracts, own property, and incur debts in its own name.

But incorporation does not mean a business owner can never be personally responsible for corporate debt.

Personal liability can arise when an owner signs a personal guarantee, assumes a direct obligation as a co-borrower, agrees to joint and several liability, or becomes liable under a specific legal rule. The wording of the loan agreement and the way the individual signs it can make a major difference.

This guide from Libra Law's Business Law team explains the distinction between a personal guarantee and a co-borrower obligation in Alberta, and why business owners should understand exactly what they are signing before corporate financing is finalized.

The Starting Point: The Corporation Is a Separate Legal Person

An Alberta corporation is generally treated as legally separate from its shareholders. Shareholders are not normally personally liable for a corporation's debts simply because they own shares.

That protection can change, however, when an individual separately agrees to become responsible for a debt.

For example, a lender may require the corporation's owner to sign:

a personal guarantee
the loan agreement as a co-borrower
a promissory note
security documents
an indemnity
a document imposing joint and several liability

These arrangements are not interchangeable. Each can create different rights and obligations.

For more background on guarantees, see our guide on Personal Guarantees in Alberta.

What Is a Personal Guarantee?

A personal guarantee is a promise to answer for another person's or entity's debt or default.

In a typical business financing arrangement:

the corporation is the borrower
the lender advances funds to the corporation
the business owner signs a separate guarantee
if the corporation defaults, the lender may pursue the guarantor in accordance with the guarantee

The guarantor's obligation is therefore connected to the debt of another party, usually the corporation.

The guarantee may be limited or unlimited. It may apply only to a specific loan or it may be drafted as a continuing guarantee that extends to future obligations.

What Is a Co-Borrower?

A co-borrower is different because the individual is not simply promising to pay if someone else defaults. The individual may be assuming the debt directly as one of the borrowers.

For example, a loan agreement might identify both:

ABC Consulting Ltd.; and
Jordan Smith personally

as the "Borrowers."

If the agreement states that each borrower is directly responsible for repayment, the lender may argue that Jordan is a primary debtor, not merely a guarantor.

That distinction can have significant consequences.

Why the Difference Matters Under Alberta's Guarantees Acknowledgment Act

Alberta's Guarantees Acknowledgment Act provides specific protections for individuals entering into certain guarantees. In general terms, the Act requires the person giving the guarantee to acknowledge it before a lawyer, and the lawyer must be satisfied that the person is aware of the guarantee's contents and understands it.

But the Act defines a guarantee as an obligation to answer for the act, default, or omission of another person.

That means the Act may not apply in the same way where an individual is not guaranteeing somebody else's obligation, but instead assumes a direct obligation to repay the debt as a borrower.

This is one reason the distinction between "guarantor" and "co-borrower" matters. Calling a person a guarantor in conversation does not necessarily determine the legal nature of the agreement. The document itself must be reviewed.

The Label Is Important, but the Actual Obligation Matters More

Business owners sometimes focus on the title printed beside their signature:

Director
Shareholder
Guarantor
Borrower
Co-Borrower

The signature block matters, but it should not be read in isolation.

A lawyer reviewing the agreement will usually look at the document as a whole, including:

how "Borrower" is defined
how "Guarantor" is defined
who promises to repay the loan
whether liability is primary or secondary
whether the individual's liability depends on the corporation first defaulting
whether liability is limited to a fixed amount
whether the obligation continues after amendments, renewals, or additional advances
how the individual signed the agreement

A business owner may believe they signed only "for the company," while the agreement may contain a separate clause creating personal liability.

What Does Joint and Several Liability Mean?

A loan agreement may state that two or more borrowers are "jointly and severally liable."

This can be especially important where a corporation and an individual are both borrowers.

Joint and several liability generally means the creditor may pursue one liable party for the full amount owed, subject to the wording of the agreement and applicable law. The lender does not necessarily have to divide the debt equally between the borrowers before seeking payment.

For a business owner, this means a 50/50 ownership interest in the company does not automatically mean personal liability is limited to 50% of the debt.

If the agreement creates joint and several liability, one borrower may face a claim for the entire outstanding amount and then have to pursue contribution from another liable party separately.

When Can a Director or Shareholder Become Personally Liable?

A business owner may face personal exposure in several different ways.

1. Signing a personal guarantee

The individual agrees to answer for the corporation's obligations if the corporation defaults.

2. Signing as a co-borrower

The individual becomes directly obligated to repay the loan alongside the corporation.

3. Signing an indemnity

An indemnity may create a separate obligation to reimburse the lender for specified losses or liabilities.

4. Assuming liability under a shareholder agreement or other contract

An owner may agree to contribute funds, reimburse another shareholder, or assume specific company obligations under a private agreement.

5. Statutory director liability

Directors can face personal liability in certain circumstances under corporate, employment, tax, or other legislation. For more on this issue, read our guide on Directors' Duties and Liability in Alberta.

Questions to Ask Before Signing a Business Loan

Before signing financing documents, a business owner should ask:

Am I signing only on behalf of the corporation, or also personally?
Am I a guarantor, co-borrower, indemnifier, or more than one of these?
Is my liability capped?
Is the obligation joint and several?
Does the agreement cover only this loan or future borrowing as well?
Can the lender change or renew the facility without obtaining my consent again?
Does my personal obligation survive the sale of the company or my resignation as a director?
What happens if another borrower does not pay?
Is independent legal advice or a Guarantees Acknowledgment Act certificate required?
Is there a release mechanism after the company meets certain financial conditions?

These questions are much easier to address before the financing closes than after a default occurs.

What If the Lender Is Already Seeking Payment From You Personally?

If a lender has demanded payment from you personally, do not assume the claim is valid or invalid based only on whether you remember signing a "personal guarantee."

The first step is to review the complete financing package, including:

the credit agreement
amendments and renewals
guarantees
promissory notes
security agreements
certificates of independent legal advice or guarantee acknowledgment
signature pages
any correspondence changing the loan terms

The central question is what legal obligation you actually assumed.

Frequently Asked Questions

Can a corporation's owner be personally liable without signing a separate personal guarantee?

Yes. Personal liability may arise if the owner signs the loan as a co-borrower, enters another direct contractual obligation, or becomes liable under a specific legal rule. A separate document titled "Personal Guarantee" is not the only way personal exposure can arise.

Is a co-borrower the same as a guarantor?

Not necessarily. A guarantor generally answers for another party's obligation. A co-borrower may be directly responsible for the debt from the outset.

Does the Guarantees Acknowledgment Act protect every business owner who signs a loan?

No. The Act applies to guarantees that fall within its definition and requirements. If an individual has assumed a direct borrower obligation rather than guaranteeing another party's debt, different considerations may apply.

Can I negotiate a personal guarantee or co-borrower clause?

Sometimes. Depending on the lender and transaction, it may be possible to negotiate a dollar cap, time limit, release mechanism, or narrower scope of liability.

Final Thoughts

A corporation usually provides an important layer of liability protection, but financing documents can create direct personal exposure for directors and shareholders.

The difference between a personal guarantee and a co-borrower obligation is not just terminology. It can affect when a lender can pursue you, the protections available under Alberta law, and the amount you may be required to pay.

If you are being asked to sign a business loan, guarantee, or co-borrower agreement, Libra Law's Business Law team can review the documents and explain your obligations before you commit.

Talk to a business lawyer at Libra Law before signing financing documents that could put your personal assets at risk.

Disclaimer: This article is for general informational purposes only and does not constitute legal advice. To obtain advice specific to your situation, please consult a lawyer or qualified professional.