Business Loan Default and Personal Guarantee in Canada — When You're Personally on the Hook

Last updated: August 2026.

Quick answer: Incorporating a business protects you from its debts by default — but a personal guarantee overrides that protection for whatever you signed, and directors can also face personal liability for unremitted payroll source deductions and GST/HST under the Income Tax Act and Excise Tax Act, guarantee or not. Standard commercial loans often require guarantees up to 100% of the loan; the Canada Small Business Financing Program caps guarantees for incorporated businesses at 25% of original principal. A personal consumer proposal or bankruptcy stops enforcement of a personal guarantee against you, but doesn’t resolve the corporation’s own debts — those need a separate corporate process.

Incorporation Limits Liability — Except for What You Signed Away

The core purpose of incorporating a business is to separate corporate debts from personal assets: if the corporation can’t pay a supplier, a landlord, or a lender, that creditor’s claim generally stops at the corporation’s own assets. A personal guarantee is a separate, individual contract that sets that protection aside for a specific debt — by signing one, the director or owner agrees to be personally liable if the corporation defaults, exactly as if they had borrowed the money themselves.

This is why two business owners who both default on a loan can end up in completely different positions: one signed a personal guarantee and is now personally on the hook, the other didn’t and the lender’s claim is limited to whatever the corporation still owns.

How Much a Lender Can Actually Require You to Guarantee

Personal guarantee terms vary significantly by lender and loan program, and it’s worth knowing the range before assuming a guarantee is all-or-nothing. Standard commercial term loans and operating lines of credit from banks commonly require personal guarantees covering up to 100% of the loan balance — the lender’s underwriting is effectively based on the owner’s personal creditworthiness as much as the business’s.

The Canada Small Business Financing Program (CSBFP) is a notable exception. For loans made to incorporated businesses, the program’s regulations cap the lender’s ability to take a personal guarantee at 25% of the original loan principal — so on a $400,000 CSBFP loan, guaranteed exposure is limited to $100,000, not the full balance. Reviewing the loan agreement’s guarantee clause specifically — not just assuming the worst — is the first concrete step after a default, since the actual exposure can be far smaller than the loan amount itself.

Director Liability Is a Separate Risk From Any Guarantee You Signed

Even a director who never signed a personal guarantee on a loan can still face personal liability for two specific categories of debt: payroll source deductions withheld from employees’ pay but not remitted to CRA, and GST/HST collected from customers but not remitted. Section 227.1 of the Income Tax Act and the equivalent provision in the Excise Tax Act allow CRA to assess directors personally for these amounts once the corporation itself can’t pay, using CRA’s standard enforcement tools — wage garnishment, bank account seizure, and liens on personal property.

This is a meaningfully different exposure than a guaranteed bank loan: it doesn’t require any signature, and it applies specifically to money the corporation collected or withheld on behalf of the government rather than borrowed. A business that defaulted on a bank loan (no guarantee signed) but also fell behind on remitting GST/HST can leave the same director personally exposed on one debt and fully protected on the other. The GST/HST side of this is covered in more detail in GST/HST debt for small business in Canada.

Resolving Personal Exposure After a Default

Because a personal guarantee and the underlying corporate debt are legally distinct obligations, resolving one doesn’t automatically resolve the other. A guarantor whose corporation is winding down often needs to run a personal consumer proposal alongside — not instead of — whatever process addresses the corporation’s own debts, particularly when CRA director liability for source deductions or GST/HST is also part of the picture.

What to Do First

1. Pull the actual loan or lease agreement and find the guarantee clause. Confirm whether it exists, what percentage of the debt it covers, and whether it’s limited (like a CSBFP-capped guarantee) or unlimited.
2. Separate guaranteed debt from director-liability debt. A guaranteed bank loan and unremitted GST/HST are different legal exposures with different fixes — treating them as one problem leads to the wrong plan.
3. Get a free consultation before the corporation’s process is finalized. Whether a personal consumer proposal should run alongside a corporate wind-down is a sequencing question a Licensed Insolvency Trustee can answer specific to your guarantees and CRA exposure.