What Happens If You Don't File Corporate Tax on Time?
The penalties are steep, the interest compounds daily, and CRA has enforcement tools that most business owners do not know about until it is too late. Here is exactly what happens.
If you file your T2 corporate tax return late in Canada, CRA charges a late filing penalty of 5% of the unpaid tax plus 1% for each full month the return is late, up to a maximum of 12 months. If you have been assessed a late filing penalty in any of the 3 preceding tax years, the penalty doubles to 10% plus 2% per month (up to 20 months). On top of the penalty, CRA charges interest on the unpaid tax at the prescribed rate plus 4%, compounded daily from the payment due date. A corporation that owes $50,000 in tax and files 6 months late pays $8,000 in penalties plus approximately $2,000 in interest. If you do not file at all, CRA can issue an arbitrary assessment, freeze your bank account and hold directors personally liable.
Late Filing Penalty: How CRA Calculates It
The T2 corporate tax return is due 6 months after the end of your fiscal year. If your fiscal year ends on December 31, your T2 is due by June 30. If your fiscal year ends on March 31, your T2 is due by September 30. The filing deadline and the payment deadline are different. Tax is due 2 months after year-end (3 months for eligible CCPCs with taxable income under $500,000 in the prior year). The T2 return is due 6 months after year-end. The late filing penalty applies when the return is filed after the 6-month deadline.
First Offence (No Prior Late Filing Penalty in the Last 3 Years)
| Component | Rate | Example: $50,000 Unpaid Tax |
|---|---|---|
| Base penalty | 5% of unpaid tax at the filing deadline | $2,500 |
| Monthly penalty | 1% of unpaid tax per full month late (max 12 months) | $500 per month |
| 3 months late | 5% + (3 x 1%) = 8% | $4,000 |
| 6 months late | 5% + (6 x 1%) = 11% | $5,500 |
| 12 months late (maximum) | 5% + (12 x 1%) = 17% | $8,500 |
Repeat Offence (Late Filing Penalty in Any of the Last 3 Years)
| Component | Rate | Example: $50,000 Unpaid Tax |
|---|---|---|
| Base penalty | 10% of unpaid tax at the filing deadline | $5,000 |
| Monthly penalty | 2% of unpaid tax per full month late (max 20 months) | $1,000 per month |
| 3 months late | 10% + (3 x 2%) = 16% | $8,000 |
| 6 months late | 10% + (6 x 2%) = 22% | $11,000 |
| 12 months late | 10% + (12 x 2%) = 34% | $17,000 |
| 20 months late (maximum) | 10% + (20 x 2%) = 50% | $25,000 |
The Repeat Offender Penalty Is Devastating. A corporation that filed late last year and files late again this year with $50,000 in unpaid tax pays up to $25,000 in penalties alone. That is 50% of the tax owing, on top of the tax itself and interest. One late filing is expensive. Two is catastrophic.
Late Payment Interest: How CRA Charges It
Interest on unpaid corporate tax begins accumulating from the payment due date (2 months after year-end, or 3 months for eligible CCPCs), not the filing deadline. Even if you file the T2 on time, interest is charged if tax was not paid by the payment deadline. The interest rate is the CRA prescribed rate plus 4%, compounded daily.
| Component | Details |
|---|---|
| Interest rate | CRA prescribed rate + 4%. The prescribed rate changes quarterly. As of 2026, the combined rate is approximately 9% to 10% annualized. |
| Compounding | Daily compounding. Interest is calculated on the unpaid tax plus any accumulated interest from the previous day. |
| Start date | The day after the payment due date (2 months or 3 months after year-end). Not the filing deadline. |
| Example | $50,000 unpaid for 6 months at approximately 10% annualized: roughly $2,500 in interest. Plus the late filing penalty of $5,500 (first offence). Total cost of being 6 months late: approximately $8,000. |
| Interest on penalties | CRA also charges interest on the late filing penalty itself, compounded daily from the date the penalty is assessed. |
Interest Cannot Be Waived Under Normal Circumstances. Unlike penalties, which can sometimes be reduced through the Taxpayer Relief Program, CRA's position is that interest is a cost of owing money and is not subject to cancellation except in cases of CRA processing delays or errors. Filing late and paying late creates a compounding debt that grows every day.
What CRA Does If You Do Not File at All
If you miss the filing deadline but eventually file, CRA assesses the penalty and interest and you owe the additional amount. But if you do not file at all, CRA's enforcement escalates significantly.
| CRA Action | What It Means | When It Happens |
|---|---|---|
| Demand to file (Notice) | CRA sends a formal written demand requiring you to file the T2 by a specific date. Ignoring a demand to file is an offence under the Income Tax Act. | Usually 3 to 12 months after the missed deadline. |
| Arbitrary assessment | CRA files a return on your behalf using their own estimates. They estimate your revenue based on HST returns, bank records, T4 data and third-party information. The estimate is almost always higher than your actual income. You owe the assessed amount plus penalties and interest. | 12 to 24 months after the missed deadline. CRA does not need your permission. |
| Collections action | CRA can garnish your business bank account, seize accounts receivable (pay your clients directly), register liens against your property and issue a Requirement to Pay to your bank, customers and anyone who owes you money. | After assessment (arbitrary or regular) and non-payment. CRA does not need a court order. |
| Director liability assessment | CRA assesses the directors of the corporation personally for unremitted payroll deductions and HST. Directors are jointly and severally liable. CRA can pursue the directors' personal bank accounts, property and assets. | After the corporation fails to pay. No time limit for certain trust debts (payroll, HST). |
| Prosecution | Failing to file after a formal demand is a criminal offence. CRA can refer the case for prosecution. Conviction: fines of $1,000 to $25,000 and up to 12 months imprisonment. | Rare for first offence. More common after repeated failure to comply with demands to file. |
Real Penalty Calculations by Scenario
| Scenario | Unpaid Tax | Months Late | First/Repeat | Penalty | Interest (approx) | Total Cost |
|---|---|---|---|---|---|---|
| Small corporation, minor delay | $10,000 | 2 | First | $700 | $170 | $870 |
| Typical CCPC, 6 months late | $30,000 | 6 | First | $3,300 | $1,500 | $4,800 |
| Larger corporation, 6 months late | $80,000 | 6 | First | $8,800 | $4,000 | $12,800 |
| Repeat offender, 6 months late | $50,000 | 6 | Repeat | $11,000 | $2,500 | $13,500 |
| Repeat offender, 12 months late | $50,000 | 12 | Repeat | $17,000 | $5,000 | $22,000 |
| Worst case, 20 months late | $100,000 | 20 | Repeat | $50,000 | $17,000 | $67,000 |
The Cost of Not Filing Is Always Greater Than the Cost of Filing. A corporation with $50,000 in unpaid tax that files 6 months late (first offence) pays approximately $8,000 in penalties and interest. The same corporation that does not file and receives an arbitrary assessment may owe $80,000+ in estimated tax (because CRA overestimates) plus penalties on the inflated amount. File late if you must. Never fail to file.
How to Fix It If You Have Not Filed
| Situation | What to Do | Potential Outcome |
|---|---|---|
| Late but no CRA contact yet | File the T2 immediately. Pay any tax owing with the return. The penalty and interest will be calculated and assessed by CRA after filing. | Penalty and interest apply. But no arbitrary assessment and no enforcement action. |
| CRA sent a demand to file | File within the deadline stated in the demand. Comply immediately. Ignoring a demand to file is a prosecutable offence. | Penalty and interest apply. Prosecution risk eliminated by complying. |
| CRA issued an arbitrary assessment | File the actual T2 as soon as possible. CRA will reassess based on the actual return and reduce the assessment to the correct amount. Penalty and interest will be recalculated on the actual tax owing. | Assessment reduced to actual income. Penalties reduced. Interest recalculated. May still be significant. |
| Multiple years unfiled | File all outstanding returns. Consider a Voluntary Disclosure Program (VDP) application if unreported income is involved. VDP provides penalty relief and possible partial interest relief if the disclosure is voluntary and complete. | VDP: penalties waived. Interest reduced or partially waived. No prosecution. Must disclose before CRA contacts you. |
| Cannot afford to pay the tax owing | File the return anyway. Then contact CRA to arrange a payment plan. CRA accepts instalment arrangements for corporate tax debt. Interest continues to accrue during the payment plan but no new penalties are assessed. | Payment plan: 12 to 60 months depending on the amount. Interest continues. But no collections action while payments are current. |
| Penalty is excessive or unfair | File a Taxpayer Relief Program (TRP) application requesting cancellation or reduction of penalties. CRA considers extraordinary circumstances (illness, disaster, CRA errors) and the taxpayer's compliance history. | Penalties cancelled or reduced. Interest generally not waived (except for CRA errors or delays). We have reduced penalties by $5,000 to $40,000 for clients. |
We Handle Late and Unfiled Corporate Tax Returns. If you have one or more unfiled T2 returns, we prepare and file them. If CRA has issued a demand to file, an arbitrary assessment or a collections action, we respond on your behalf, negotiate with CRA and apply for penalty relief through the Taxpayer Relief Program. CRA audit defence is FREE for all existing clients. CRA Audit Resolution →
T2 Deadlines: Filing vs. Payment
| Deadline | When | What Happens If Missed |
|---|---|---|
| Tax payment deadline | 2 months after fiscal year-end. 3 months for eligible CCPCs (taxable income under $500,000 in prior year). | Interest begins at prescribed rate + 4%, compounded daily. No separate penalty for late payment (but late filing penalty is calculated on the unpaid balance at the filing deadline). |
| T2 filing deadline | 6 months after fiscal year-end. | Late filing penalty: 5% + 1%/month (first offence). 10% + 2%/month (repeat). Plus interest on the penalty itself. |
| If tax is paid on time but T2 is filed late | No late filing penalty (the penalty is calculated on UNPAID tax at the filing deadline). If tax is fully paid by the payment deadline, the late filing penalty is $0 because there is no unpaid balance. |
The Critical Insight: If you cannot file the T2 on time, pay the estimated tax owing by the payment deadline (2/3 months after year-end). This eliminates the late filing penalty entirely because the penalty is calculated on unpaid tax. You will owe $0 in late filing penalty even if the return is filed months later. Interest on any overpayment is refunded. This is the single most important thing to know about late corporate tax filing. CRA Deadlines 2026-2027 →
Director Liability: When CRA Comes After You Personally
Directors of a Canadian corporation are personally liable for certain corporate tax debts. If the corporation fails to remit payroll deductions (CPP, EI, income tax withheld) or HST collected, CRA can assess the directors personally under section 227.1 of the Income Tax Act. This means CRA can pursue the directors' personal bank accounts, personal property, investment accounts and any other personal assets.
| Liability Type | Directors Personally Liable? | Defence Available? |
|---|---|---|
| Unremitted payroll deductions (CPP, EI, income tax withheld) | Yes. These are trust funds held on behalf of employees. | Due diligence defence only: must prove you took reasonable steps to prevent the failure. |
| Unremitted HST collected | Yes. HST collected is a trust fund held on behalf of CRA. | Same due diligence defence. |
| Corporate income tax (T2) | No. Directors are not personally liable for corporate income tax. | Not applicable. Corporate income tax is the corporation's debt only. |
| Late filing penalties | No. Penalties are assessed against the corporation. | Not applicable. But the corporation must pay. |
| After resignation | Liable for amounts that were due while serving as director. 2-year limitation after resignation for CRA to assess the director. | Resignation does not eliminate liability for amounts already due. |
Most Owner-Managers Are the Sole Director. If you are the only director and shareholder of your corporation, and the corporation fails to remit payroll or HST, CRA assesses you personally. There is no corporate veil for trust funds. The due diligence defence requires proof that you actively tried to ensure the corporation would remit on time. Simply being unaware is not a defence. Corporate Tax Guide →
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Sharad Gondaliya, CPA
Founder & Managing Director
Gondaliya CPA Professional Corporation
Sharad handles late and unfiled corporate tax returns, CRA demand responses, arbitrary assessment disputes, Taxpayer Relief Program applications, penalty negotiations and director liability defence.
Vandana Goel, CPA
Senior Accountant
Gondaliya CPA Professional Corporation
Vandana prepares T2 returns for late and catch-up filings, compiles supporting documentation for penalty relief applications and manages CRA correspondence for corporate tax matters.
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