When Corporate Debt Becomes Personal: Director Liability for Source Deductions and GST/HST in Canada
Limited liability is the foundation of corporate business in Canada. A director can run a company, make decisions, and watch it fail without being personally responsible for most of its debts. Trade creditors, lenders, and landlords usually have no claim against the people behind the corporation unless those people signed a personal guarantee.
There is a major exception, and it is one that creditors frequently overlook. For two specific categories of debt, directors can be held personally liable regardless of the corporate veil and regardless of whether they ever signed anything. Those two categories are unremitted payroll source deductions and unremitted GST/HST. When a corporate customer collapses owing money, the directors may simultaneously be on the hook to the Canada Revenue Agency for amounts that have nothing to do with limited liability protection.
Understanding this matters for any business assessing what it can recover from a failing corporate customer, because director liability changes both the size of the recovery pool and the leverage available in negotiations.
Why these two debts are different
Most corporate debts are the corporation's own obligations. Payroll source deductions and GST/HST are different in character. They are amounts the corporation holds on behalf of others.
When a corporation pays employees, it is required to withhold income tax, Canada Pension Plan contributions, and Employment Insurance premiums from their wages and remit those amounts to the government. That withheld money was never really the corporation's to spend. It belongs to the Crown and was simply collected through the corporation.
GST/HST works on a similar principle. When a corporation charges GST/HST on its sales, it collects that tax from its customers on behalf of the government. The net amount it owes is money it gathered as an intermediary, not revenue it earned.
Because these amounts are treated as money held in trust for the Crown rather than ordinary business debts, the law attaches personal responsibility to the directors who were supposed to ensure they were remitted. A corporation that spends withheld payroll deductions or collected sales tax on operating expenses is, in effect, using the government's money to stay afloat, and directors cannot hide behind the corporation when that happens.
What directors can be liable for
Director liability in this area covers:
Payroll source deductions the corporation failed to deduct or, having deducted them, failed to remit. This includes the income tax, CPP, and EI amounts, together with related interest and penalties.
Net GST/HST the corporation collected but failed to remit, again with interest and penalties.
Directors are jointly and severally liable, meaning the government can pursue any one director for the full amount, not just that director's proportionate share. A director who pays can, in theory, seek contribution from the others, but the government does not have to spread its claim evenly.
This is not a small-dollar risk. For a corporation with payroll and ongoing sales, unremitted deductions and tax can accumulate into very large sums before the business finally fails, and those sums can follow the directors personally.
When director liability actually crystallizes
A director does not become personally liable the moment the corporation misses a remittance. The Canada Revenue Agency generally has to pursue the corporation first and come up short before turning to the directors. In practice, director liability typically crystallizes around the corporation's insolvency, which is exactly when creditors are paying attention.
The usual triggers are:
The government has registered its claim against the corporation and an attempt to collect through the courts has been returned unsatisfied, in whole or in part.
The corporation has entered liquidation or dissolution, and the claim has been proven within the required window.
The corporation has made an assignment in bankruptcy or become bankrupt, and the claim has been proven within the required window.
The connection to insolvency is the reason this topic belongs in any serious discussion of failing corporate customers. When your customer files for bankruptcy or a proposal owing you money, the same collapse that triggered the insolvency often exposes the directors to personal liability for the unremitted amounts. That exposure exists in parallel with whatever claim you have as a creditor.
The two-year clock
Director liability does not last forever. There is a limitation period: the government generally cannot assess or pursue a person for these amounts more than two years after that person last ceased to be a director of the corporation.
This cuts both ways. For directors, resigning starts a clock that eventually closes the window, although resigning to escape liability that has already accrued does not erase the past exposure. For creditors trying to understand a director's position, the timing of resignations can be relevant to whether the director still faces meaningful personal exposure.
The due diligence defence
Directors are not automatically liable simply because the corporation failed to remit. There is a defence available to a director who can show they exercised the degree of care, diligence, and skill to prevent the failure that a reasonably prudent person would have exercised in comparable circumstances.
Canadian courts apply this as an objective standard. It is not enough for a director to say they trusted someone else, were not involved in finances, or did not know. The question is what a reasonably prudent person in that position would have done to prevent the failure. Directors who took concrete steps to ensure remittances were made, who acted on warning signs, and who did not simply allow the corporation to keep spending the Crown's money tend to fare better. Directors who were passive tend not to.
For creditors, the practical relevance is that the due diligence defence is real but not easy to establish, which means many directors of failed corporations remain genuinely exposed.
Why this matters to creditors, not just directors
It would be easy to file director liability under "interesting but not my problem." That would be a mistake. It affects creditors in three concrete ways.
It shrinks the recovery pool. Unremitted payroll source deductions carry a powerful priority. The Crown's claim for those amounts can rank ahead of even secured creditors in many circumstances, through a deemed trust mechanism that effectively reaches into the corporation's assets before other creditors are paid. The practical result is that when a corporation fails owing significant source deductions, there may be far less available for ordinary creditors than the asset list suggests. GST/HST priority is more limited, particularly once a corporation is bankrupt, but the source deduction priority is something every creditor assessing a failing customer should factor in.
It creates negotiating leverage. A director who is personally exposed to a large CRA assessment has a strong incentive to resolve the corporation's affairs in an orderly way and to avoid triggers that accelerate personal liability. Where a creditor also holds a personal guarantee from the same director, the combined personal exposure can meaningfully change the dynamics of a settlement discussion. A director facing personal liability on multiple fronts is often more motivated to find a resolution than one who believes the corporation can simply be walked away from.
It informs how you read the warning signs. A corporate customer that has fallen behind on remittances to the government is often in deeper trouble than one that is merely slow paying its suppliers. Remittance arrears are a serious distress signal, because they usually mean the business has been using money it was holding for the Crown to fund operations. A creditor who learns that a customer is behind on source deductions or GST/HST should treat that as a strong indicator of elevated risk.
Frequently asked questions
Can a director be personally liable for a corporation's debts? For most debts, no. Limited liability protects directors. But for unremitted payroll source deductions and unremitted GST/HST, directors can be held personally liable regardless of the corporate veil and regardless of whether they signed a personal guarantee.
Which corporate tax debts can become personal? Two main categories: payroll source deductions the corporation failed to remit, including income tax, CPP, and EI with interest and penalties, and net GST/HST the corporation collected but failed to remit, also with interest and penalties.
How long does the government have to pursue a director? Generally up to two years after the person last ceased to be a director of the corporation. Resigning starts that clock, but it does not erase liability that had already accrued.
What is the due diligence defence? A director can avoid liability by showing they exercised the care, diligence, and skill that a reasonably prudent person would have exercised to prevent the failure. Courts apply this objectively, so passivity or simply trusting others is usually not enough.
I'm a creditor, not a director. Why does this matter to me? Because it affects what you can recover. Source deduction claims can rank ahead of even secured creditors, shrinking the pool available to everyone else. It also creates leverage in negotiations, especially where you also hold a personal guarantee, and it tells you that a customer behind on remittances is likely in serious distress.
The bottom line
Director liability for source deductions and GST/HST is one of the few places where Canadian law sets limited liability aside and reaches the individuals behind a corporation directly. For directors, it is a personal risk that survives the failure of the business. For creditors, it is a piece of the picture that changes both how much can realistically be recovered from a failing corporate customer and how a negotiation is likely to unfold.
When a corporate customer starts to slide, the smart creditor looks past the corporation itself to the people standing behind it and to the obligations that cannot be escaped by simply closing the doors. Remittance arrears, personal guarantees, and director liability together often tell a clearer story about real recovery prospects than the corporation's balance sheet ever will.
This area of law carries significant personal consequences and turns on specific facts and timing. Anyone navigating it, whether as a director or a creditor weighing recovery options, should obtain professional advice on their particular situation.