CRA Defense
GST/HST compliance strategy for Canadian businesses.
CRA classifies collected GST/HST as trust amounts held on behalf of the Crown. If your business fails to remit on time, CRA does not treat it as ordinary debt. Directors become personally liable. Bank accounts can be frozen. The penalties and interest compound daily. A proactive compliance strategy prevents all of this.
Why CRA treats GST/HST differently from other business debt
When your business collects GST/HST from customers, those amounts are classified as Crown trust property from the moment of collection. Unlike corporate income tax, which is the corporation's own liability, GST/HST collected belongs to the government. Your business is acting as a collection agent. This legal distinction has three practical consequences: CRA can freeze bank accounts without a court order through Requirements to Pay, the debt survives bankruptcy, and directors are personally liable under Section 323 of the Excise Tax Act.
The trust classification also means that mixing collected GST/HST with operating amounts and spending it on business expenses is treated more seriously by CRA than simply being late on corporate income tax. Businesses that habitually use collected HST as working capital are carrying escalating risk: each filing period adds to the unremitted balance, penalties compound, and the director liability exposure grows proportionally.
Director liability for unremitted HST
Section 323 of the Excise Tax Act mirrors the director liability provisions in the Income Tax Act. When a corporation fails to remit collected GST/HST, CRA can assess each director personally for the full unremitted amount plus penalties and interest. The liability is joint and several: CRA can pursue any director for the total regardless of their ownership stake or involvement in financial management.
The only statutory defense available to directors is due diligence: demonstrating that you exercised the degree of care, diligence, and skill that a reasonably prudent person would have exercised to prevent the failure to remit. In practice, this means contemporaneous documentation showing that you actively monitored GST/HST remittances and took steps to ensure compliance. A proactive compliance framework that documents oversight activities provides the foundation for a due diligence defense if CRA ever assesses director liability. For the full scope of director liability defense strategies, see the director liability protection page.
Common GST/HST filing mistakes that trigger audits
CRA's GST/HST audit selection algorithms flag specific patterns. Input tax credit claims that exceed a percentage threshold relative to revenue signal potential over-claiming. Consistent net refund positions in industries where refunds are unusual trigger manual review. Gaps in filing history suggest unremitted periods. Changes in reporting patterns (switching between annual, quarterly, and monthly filing) without corresponding changes in revenue also draw attention.
The most common substantive error is claiming input tax credits without invoices that meet the prescribed information requirements under the Input Tax Credit Information (GST/HST) Regulations. An invoice must contain the supplier's name and registration number, the date, the amount of tax charged, and a description of the supply. Missing any required element gives CRA grounds to deny the ITC on audit. For a detailed guide on ITC documentation requirements, see our input tax credit Canada guide.
Our proactive GST/HST compliance approach
We conduct a confidential compliance review of your GST/HST filing history, documentation practices, and ITC claims. The review identifies gaps in supporting documentation, filing patterns that increase audit risk, and areas where compliance improvements reduce your exposure. Where unfiled periods exist, we evaluate whether the voluntary disclosure program is appropriate to address the filing gap with penalty relief.
Beyond audit prevention, the compliance review identifies cash flow optimization opportunities within the remittance framework. The period between collection and remittance creates a window where collected amounts can earn interest in appropriate accounts. Filing frequency optimization (annual vs quarterly vs monthly) based on your revenue and cash flow patterns can extend or compress this window depending on your situation. All optimization is structured within the bounds of CRA's rules: the objective is compliance that also works for your cash flow, not avoidance schemes.
Optimizing cash flow within compliance
Canadian businesses that file GST/HST annually hold collected amounts for up to 15 months before remittance (fiscal year plus three months). Quarterly filers hold amounts for up to four months. Monthly filers hold for one month. The appropriate filing frequency depends on your revenue level (CRA mandates monthly filing above $6 million annual taxable supplies), cash flow needs, and risk tolerance.
During the holding period, collected GST/HST can be placed in interest-bearing accounts. High-interest savings accounts currently available to Canadian businesses make this a meaningful cash flow tool for businesses with significant monthly collections. The key is maintaining strict separation between trust amounts and operating capital so that remittance is never at risk. For the broader relationship between GST/HST compliance and CRA enforcement, see the CRA defense overview. For information on how CRA audits work, including GST/HST audits, see our CRA audit guide.
Book your GST/HST compliance review
A confidential review of your GST/HST filing history, ITC documentation, and compliance posture. 30 minutes, no obligation.
Frequently asked questions
Why does CRA treat GST/HST differently from other business debt?
CRA classifies collected GST/HST as trust amounts held on behalf of the Crown. When your business collects HST from customers, those amounts belong to the government from the moment they are collected. Failure to remit is treated as a breach of trust rather than a simple debt, which is why directors become personally liable under Section 323 of the Excise Tax Act and why CRA can freeze bank accounts without a court order for unremitted trust amounts.
What is Section 323 of the Excise Tax Act?
Section 323 of the Excise Tax Act imposes personal liability on directors of a corporation that fails to remit collected GST/HST. The liability is joint and several among all directors and attaches regardless of whether the director was involved in day-to-day financial management. The only statutory defense is due diligence: demonstrating that the director exercised reasonable care to ensure the corporation remitted its GST/HST obligations.
What are the most common GST/HST filing mistakes that trigger audits?
CRA commonly audits GST/HST filings where input tax credits are disproportionate to revenue, where returns show consistent net refund positions, where there are gaps in filing history, or where the business operates in a cash-intensive industry. Documentation failures are the most common audit trigger: claiming ITCs without supporting invoices that meet the prescribed information requirements under the Excise Tax Act regulations.
Can I earn interest on collected GST/HST before remitting it?
Yes. The period between collecting GST/HST from customers and the remittance due date creates a window where those amounts can be held in an interest-bearing account. Annual, quarterly, and monthly filers each have different remittance timelines that determine how long the amounts are available. Optimizing cash flow within compliance means structuring your filing frequency and banking arrangements to maximize the interest earned on trust amounts before the remittance deadline.
What happens if I miss a GST/HST remittance deadline?
Late remittance triggers an immediate penalty of 1% of the amount owing plus 0.25% for each full month the amount remains outstanding, up to 12 months. Interest also accrues daily at the prescribed rate. Repeated late remittances increase the penalty to 2% plus 0.5% per month. Beyond financial penalties, a pattern of late remittance puts your file on CRA watch lists that increase audit probability.
Is this service available in Quebec?
No. This service covers GST/HST compliance for Canadian businesses in all provinces and territories except Quebec. Quebec businesses remit QST to Revenu Québec under separate rules.