Canada Corporate Tax Deadlines and Penalties: What Businesses Must Know in 2026

Canada’s Corporate Tax Compliance Calendar

Canada’s corporate tax system imposes a matrix of filing, payment, and reporting obligations that operate on independent timelines — each with its own deadline, its own penalty regime, and its own interest calculation. For businesses in regulated sectors — MSBs, PSPs, EMIs, fintech companies, and other financial services operators — the complexity is compounded by the volume and multi-currency nature of the underlying transactions.

Understanding the full corporate tax compliance calendar is not optional. CRA does not send reminders before deadlines. The obligation to file, pay, and report arises by operation of law — and the penalties for missing any of these deadlines begin accruing immediately and automatically.

This guide provides a comprehensive, authoritative reference to every corporate tax deadline that applies to a Canadian business in 2026 — with the penalty and interest consequences of missing each one set out plainly. For MSB-specific tax guidance, see our dedicated articles on accounting and tax compliance for MSBs in Canada and Canadian MSB tax obligations.

T2 Corporate Income Tax Return: Filing Deadlines

The Basic Rule

Every Canadian corporation — regardless of size, revenue, or whether it earned taxable income — must file a T2 Corporation Income Tax Return annually. The filing deadline is:

Six months after the end of the corporation’s fiscal year.

For corporations with a December 31 fiscal year-end, the T2 is due on June 30 of the following year. For corporations with other year-ends, the deadline is calculated as six calendar months from that year-end date:

Fiscal Year-End	T2 Filing Deadline
December 31	June 30
March 31	September 30
June 30	December 31
September 30	March 31
October 31	April 30

No Income Does Not Mean No Filing

A corporation that had zero revenue, is in a loss year, or is temporarily dormant must still file a T2. The filing obligation exists regardless of income level. The only limited exception applies to certain Crown corporations and specific exempt entities — neither of which applies to a standard incorporated MSB or fintech company.

When the Deadline Falls on a Weekend or Holiday

Where a filing deadline falls on a Saturday, Sunday, or a federal public holiday, CRA extends the deadline to the next business day. This extension applies to filing dates — it does not extend the tax payment deadline.

Corporate Tax Payment Deadlines

The Critical Distinction

This is the most commonly misunderstood aspect of Canadian corporate tax compliance. The T2 filing deadline (six months) and the tax payment deadline are separate and independent obligations:

Corporation Type	Tax Payment Deadline	T2 Filing Deadline
Most corporations	2 months after fiscal year-end	6 months after fiscal year-end
Eligible CCPCs	3 months after fiscal year-end	6 months after fiscal year-end

For a December 31 year-end:

• Most corporations must pay by February 28
• Eligible CCPCs must pay by March 31
• All corporations must file by June 30

Interest on unpaid taxes begins accruing at the prescribed rate plus 4%, compounded daily, from the payment deadline — not from the filing deadline. An MSB that files its T2 on June 29 (one day before the filing deadline) but failed to pay taxes by February 28 has been accumulating daily compound interest for four months.

Eligible CCPC Conditions for the Three-Month Extension

The three-month payment deadline applies only to corporations that meet all of the following conditions:

1. The corporation is a Canadian-Controlled Private Corporation (CCPC) throughout the tax year
2. The corporation claims the Small Business Deduction for the year
3. The corporation, together with all associated corporations, has taxable capital employed in Canada of less than $10 million for the year

If any one of these conditions is not met, the two-month payment deadline applies.

Corporate Tax Instalment Requirements and Deadlines

When Instalments Are Required

A corporation must make quarterly tax instalment payments when its net taxes payable (federal plus provincial combined) exceeds $3,000 in the current tax year or in either of the two immediately preceding tax years.

CRA does not notify corporations when they first become subject to the instalment requirement. The obligation arises by operation of law.

Instalment Due Dates

Instalments are due on the last day of each quarter of the corporation’s fiscal year. For a December 31 year-end:

Instalment	Due Date
1st quarterly instalment	March 31
2nd quarterly instalment	June 30
3rd quarterly instalment	September 30
4th quarterly instalment	December 31

For fiscal years ending on other dates, instalments are due on the last day of each quarter of that fiscal year.

The Three Calculation Methods

Method	How Calculated	Best Used When
Prior year method	¼ of prior year’s net taxes per quarter	Income stable or growing — eliminates interest risk
Current year method	¼ of estimated current year taxes per quarter	Current year income significantly lower than prior year
Blended method	First 2 instalments = ¼ of second-prior year; last 2 = amount to reach prior year total	Hybrid; rarely optimal

The prior year method is the safest default for most corporations: if you pay exactly ¼ of last year’s tax liability each quarter, CRA cannot charge instalment interest — even if your current year liability turns out to be higher.

Instalment Interest

If instalments are underpaid relative to what the prior year method would require, CRA charges instalment interest at the prescribed rate plus 4%, compounded daily from each due date. CRA applies an offset — overpayments on some quarters earn interest at the prescribed rate, which reduces the net interest charge on shortfall quarters.

GST/HST Filing and Payment Deadlines

Filing Frequency Determination

GST/HST filing frequency is assigned by CRA based on annual taxable supplies and is reviewed annually:

Annual Taxable Supplies	Filing Frequency	Return Due
Over $6 million	Monthly	One month after period end
$1.5 million – $6 million	Quarterly	One month after quarter end
Under $1.5 million	Annual	Three months after fiscal year-end

For businesses with a December 31 fiscal year-end filing annually, the GST/HST return is due by March 31 of the following year. For quarterly filers, returns are due April 30, July 31, October 31, and January 31. Monthly filers must file and remit by the last day of the month following the reporting period — meaning a January reporting period is due February 28/29, a February period is due March 31, and so on throughout the year.

GST/HST and MSBs: A Special Note

Most core MSB services — foreign exchange, remittance, money orders, and virtual currency exchange — are exempt financial services under the Excise Tax Act and do not attract GST/HST. However, ancillary technology or administrative fees may be taxable. MSBs must determine their actual taxable supply position before concluding they have no GST/HST filing obligation.

For a detailed analysis of GST/HST treatment for MSBs, see our guide on Canadian MSB tax obligations.

Late GST/HST Penalties

The late filing penalty for GST/HST where net tax is owing is:

1% of the balance owing, plus 0.25% of the balance owing for each complete month the return is late — up to 12 months

Failure to register for GST/HST when required results in retroactive assessment of all GST/HST that should have been collected and remitted, plus interest at the prescribed rate plus 4%, plus potential penalties.

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Payroll Remittance Deadlines {#payroll-deadlines}

Remittance Schedules

Payroll source deductions — CPP contributions, EI premiums, and income tax withholdings — must be remitted to CRA on a schedule determined by average monthly withholding:

Remitter Category	Average Monthly Withholding	Deadline
New employer (first year)	Any	15th of following month
Regular	Under $25,000	15th of following month
Accelerated — Threshold 1	$25,000 – $99,999	Within 3 days of end of each bi-weekly period
Accelerated — Threshold 2	$100,000 or more	Within 3 days of specific paydays

Payroll Penalty Structure

Payroll remittance penalties are assessed by days late:

Days Late	Penalty
1–3	3%
4–5	5%
6–7	7%
More than 7 / failure to remit	10%
Second failure in calendar year (gross negligence)	20%

T4 and T5 Annual Filing Deadlines

• T4 slips and T4 Summary — must be filed with CRA and distributed to employees by the last day of February each year
• T5 slips and T5 Summary — must be filed and distributed to recipients by the last day of February each year
• Relevé 1 (Quebec) — filed with Revenu Québec by the last day of February

The penalty for failing to file information returns on time is $25 per day the failure continues (minimum $100, maximum $2,500 per form).

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Information Return Deadlines: T4, T5, T1134, T1135, T106 {#information-return-deadlines}

Complete Information Return Deadline Reference

Return	Description	Filing Deadline	Penalty for Late Filing
T4 / T4 Summary	Employment income	Last day of February	$25/day (min $100, max $2,500)
T5 / T5 Summary	Investment income / dividends	Last day of February	$25/day (min $100, max $2,500)
T1134	Foreign affiliates	10 months after fiscal year-end	$25/day (min $100, max $2,500); gross negligence: 5% of affiliate share cost
T1135	Foreign assets (>$100K cost)	Same date as T2	$25/day (min $100, max $2,500); gross negligence: 5% of foreign property cost
T106	Transfer pricing transactions (>$1M)	Same date as T2	$25/day (min $100, max $2,500)

Why Information Returns Matter for MSBs

T1134 and T1135 are among the most frequently missed obligations in the MSB sector. They have no connection to tax owing — the penalties apply regardless of whether any underlying tax is owed — and they are routinely overlooked by bookkeepers and non-specialist accountants who are unfamiliar with the requirements.

For a December 31 year-end, the T1134 is due October 31 of the following year — four months after the T2 filing deadline. This staggered deadline means that the compliance calendar does not end on June 30 for corporations with foreign affiliates.

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Late Filing Penalties: The Full Picture {#late-filing-penalties}

T2 Late Filing Penalty

The penalty for filing the T2 after the due date where taxes are owing is calculated under section 162(1) of the ITA:

First offence:

5% of unpaid taxes on the filing deadline + 1% of unpaid taxes for each complete month the return is late, to a maximum of 12 months

Repeat offence (where CRA previously issued a demand to file under s.150(2) ITA and the return was late again):

10% of unpaid taxes + 2% of unpaid taxes for each complete month the return is late, to a maximum of 20 months

Worked Example: First Offence

A corporation with a December 31 year-end has $100,000 of unpaid taxes and files its T2 four months late (October 31 instead of June 30):

• Base penalty: 5% × $100,000 = $5,000
• Monthly add-on: 1% × $100,000 × 4 months = $4,000
• Total late filing penalty: $9,000
• Plus arrears interest from February 28 (payment deadline) to date of payment — compounding daily

Worked Example: Repeat Offence

Same facts, but CRA previously demanded the return under s.150(2) and the corporation was late again:

• Base penalty: 10% × $100,000 = $10,000
• Monthly add-on: 2% × $100,000 × 4 months = $8,000
• Total late filing penalty: $18,000

Nil Return Late Filing

Where the T2 is filed late but no taxes are owing, the monetary penalty is nil (the penalty is a percentage of unpaid taxes). However, an unfiled return establishes a pattern that elevates the penalty for any future late filing where taxes are owing — and CRA can issue a demand to file under s.150(2) that, if not complied with, constitutes a separate offence. <div style=”border-color:#e7484899;border-style:solid;border-width:1px;border-radius:16px;color:#1e1e1e;background:linear-gradient(86deg,rgb(255,240,242) 6%,rgb(255,255,255) 100%);margin-top:16px;margin-bottom:32px;padding:24px;font-family:-apple-system,BlinkMacSystemFont,’Segoe UI’,Roboto,Oxygen-Sans,Ubuntu,Cantarell,’Helvetica Neue’,sans-serif”> <div style=”display:flex;align-items:center;gap:12px;margin-bottom:12px”> <span style=”font-size:20px”>⚠️</span> <p style=”color:#e74848;font-size:16px;font-weight:600;line-height:1.5;margin:0″>COMMON MISTAKE</p> </div> <p style=”color:#1e1e1e;font-size:18px;font-weight:500;line-height:1.5;margin:0″>Many business owners assume the late filing penalty is a one-time flat fee. It is not — it compounds monthly for up to 12 months (or 20 months on a repeat offence), stacking on top of daily compound interest on the unpaid tax itself. On a $200,000 tax liability filed six months late, the combined penalties and interest can easily exceed $30,000.</p> </div>

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Interest on Unpaid Balances {#interest}

Arrears Interest

CRA charges compound daily interest on all unpaid tax balances at:

Prescribed rate + 4%

The prescribed rate is set quarterly by the Department of Finance and published on CRA’s website. At a prescribed rate of 6% (as an example), the arrears rate would be 10% — compounding daily. This is a material cost for businesses carrying unresolved tax balances.

Arrears interest:

• Begins on the day after the payment deadline (not the filing deadline)
• Compounds daily
• Applies to the unpaid tax balance — not to the penalties themselves (penalties attract their own separate interest)
• Is not deductible as a business expense under section 18(1)(t) of the ITA

Refund Interest

When CRA owes the corporation a refund, it pays interest at:

Prescribed rate + 2%

Refund interest begins 45 days after the later of the filing date of the return or the day after the end of the tax year to which the overpayment relates.

Prescribed Rate History and Current Rate

The prescribed rate changes quarterly. Businesses should check CRA’s current prescribed interest rates at the beginning of each quarter to calculate their current exposure accurately.

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Gross Negligence and Tax Evasion Penalties {#gross-negligence}

Gross Negligence Penalty (s.163(2) ITA)

Where CRA establishes that a false statement or omission in a return was made knowingly or in circumstances amounting to gross negligence, a penalty of:

50% of the understatement of tax attributable to the false statement or omission

This penalty applies on top of the underlying tax, arrears interest, and any late filing penalty. It is not reserved for fraud — gross negligence includes situations where the taxpayer was wilfully blind to known errors or where the degree of carelessness was so extreme as to be tantamount to intentional conduct.

Common MSB scenarios where CRA has applied the gross negligence penalty:

• Deliberate omission of foreign exchange gains identified in internal records
• Repeated failure to report cryptocurrency dispositions after receiving CRA guidance
• Claiming personal expenses as business deductions across multiple years with no plausible business rationale

Tax Evasion (Criminal — s.239 ITA)

Where CRA establishes criminal tax evasion — a deliberately false return, destruction of records, or wilful omission of income — the consequences are:

Summary conviction:

• Fine of 50%–200% of the evaded tax, plus up to 2 years imprisonment

Indictment:

• Fine of 100%–200% of the evaded tax, plus up to 5 years imprisonment

Criminal prosecution for tax evasion is relatively rare — reserved for the most egregious cases — but CRA actively pursues it in cases involving deliberate record falsification, offshore concealment, and systemic income suppression.

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Director Personal Liability {#director-liability}

Section 227.1 ITA: Source Deduction Liability

Directors of a corporation are jointly and severally liable for unremitted source deductions — CPP contributions, EI premiums, and income tax withholdings — if the corporation fails to remit them. This personal liability:

• Applies even after the corporation has been dissolved or gone bankrupt
• Is subject to a two-year limitation period from the date the individual last ceased to be a director
• Can be defended against under the due diligence defence in s.227.1(3) — but only where the director exercised the degree of care, diligence, and skill that a reasonably prudent person would have exercised in comparable circumstances to prevent the failure

Section 323 ETA: GST/HST Director Liability

An equivalent provision in the Excise Tax Act makes directors personally liable for unremitted GST/HST — with the same due diligence defence and two-year limitation from cessation as a director.

What This Means in Practice

For MSB owner-operators who are also sole or majority directors, personal liability for unremitted source deductions and GST/HST is a real and material risk — particularly where the business experiences cash flow difficulties and payroll or GST/HST remittances are delayed to preserve liquidity. This is one of the most significant personal financial risks in operating a Canadian corporation. <div style=”border-color:#9b59b699;border-style:solid;border-width:1px;border-radius:16px;color:#1e1e1e;background:linear-gradient(86deg,rgb(248,240,255) 6%,rgb(255,255,255) 100%);margin-top:16px;margin-bottom:32px;padding:24px;font-family:-apple-system,BlinkMacSystemFont,’Segoe UI’,Roboto,Oxygen-Sans,Ubuntu,Cantarell,’Helvetica Neue’,sans-serif”> <div style=”display:flex;align-items:center;gap:12px;margin-bottom:12px”> <span style=”font-size:20px”>🔍</span> <p style=”color:#9b59b6;font-size:16px;font-weight:600;line-height:1.5;margin:0″>INDUSTRY INSIGHT</p> </div> <p style=”color:#1e1e1e;font-size:18px;font-weight:500;line-height:1.5;margin:0″>The due diligence defence for director liability under s.227.1(3) is assessed on specific facts — and courts have set a relatively high bar. A director who simply did not monitor payroll remittances, or who deferred remittances during a cash crisis without taking active steps to cure the default, will generally not succeed with this defence. It is not enough to be unaware of the default; you must have actively taken steps to prevent it.</p> </div>

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CRA’s Voluntary Disclosures Program: The Safety Valve {#vdp}

What Is the VDP?

The Voluntary Disclosures Program (VDP) allows taxpayers to come into compliance for past errors — unfiled returns, unreported income, missed information returns, incorrect tax positions — before CRA initiates contact, with significant relief from penalties and protection from criminal prosecution.

VDP Eligibility Conditions

A VDP application is valid only if:

1. The disclosure is voluntary — CRA has not already contacted the taxpayer about the specific issue
2. The disclosure is complete — all relevant facts are disclosed accurately
3. The issue involves a potential penalty or prosecution exposure
4. The issue relates to a tax year or reporting period for which the filing or reporting deadline has already passed and there is a potential penalty or prosecution exposure

Once CRA contacts the taxpayer — whether through an audit notice, a letter of inquiry, or a compliance review — VDP eligibility for that specific matter is lost.

What VDP Relief Provides

For general program disclosures (income tax, GST/HST, information returns):

• Penalty relief — standard late filing and failure-to-report penalties are generally waived
• Protection from prosecution for the disclosed matters
• Partial interest relief — interest is generally payable for the three most recent years only (older interest may be cancelled)

For limited program disclosures (where major omissions or intentional non-compliance is involved):

• Penalty relief and prosecution protection still apply
• No interest relief — all arrears interest must be paid

VDP for MSBs: Most Relevant Scenarios

• Unreported foreign exchange gains from prior years
• Missing T1135 filings for offshore bank accounts or foreign investments
• Unreported cryptocurrency income from prior tax years
• Missing T1134 filings for foreign affiliates
• Underreported corporate income from any source

For any MSB that has identified historic compliance gaps, a VDP assessment should be the first step — before CRA initiates contact, and while the window is still open.

Taxpayer Relief: When Penalties Have Already Been Assessed

Where penalties and interest have already been assessed — and VDP is no longer available — the Taxpayer Relief provisions under section 220(3.1) of the ITA (formerly the “fairness provisions”) give CRA discretion to waive or cancel penalties and interest in certain circumstances:

• Financial hardship — where payment would cause undue hardship
• Serious illness or mental or physical incapacity
• Natural disaster or circumstances beyond the taxpayer’s control
• CRA error or delay — where the penalty or interest arose due to incorrect information or processing errors by CRA

Taxpayer relief is not automatic — it requires a formal application (Form RC4288) with supporting documentation. CRA’s discretion is wide but not unlimited, and applications are reviewed on the specific facts. For MSBs that have accumulated significant penalty and interest charges due to genuine hardship or circumstances beyond their control, a taxpayer relief application is a legitimate and underutilised tool.

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Master Deadline Reference Table: December 31 Year-End {#master-table}

The following table provides the complete CRA compliance calendar for a Canadian corporation with a December 31 fiscal year-end:

Date	Obligation
Various — per remitter category	Payroll source deduction remittances (CPP, EI, income tax) — see remittance schedule; accelerated remitters due within 3 days of period end; regular remitters due 15th of following month
Last day of February	T4 slips + T4 Summary filed with CRA and distributed to employees
Last day of February	T5 slips + T5 Summary filed with CRA and distributed to recipients
Last day of February	Relevé 1 filed with Revenu Québec (Quebec employees)
February 28	Corporate tax payment deadline — most corporations
March 31	Corporate tax payment deadline — eligible CCPCs
March 31	1st quarterly corporate tax instalment
March 31	GST/HST annual return due (for annual filers)
April 30	GST/HST Q1 return due (for quarterly filers)
June 30	T2 Corporation Income Tax Return due
June 30	T1135 Foreign Income Verification Statement due
June 30	T106 Transfer Pricing Information Return due
June 30	2nd quarterly corporate tax instalment
July 31	GST/HST Q2 return due (for quarterly filers)
September 30	3rd quarterly corporate tax instalment
October 31	GST/HST Q3 return due (for quarterly filers)
October 31	T1134 Foreign Affiliate Information Return due
December 31	4th quarterly corporate tax instalment
January 31 (following year)	GST/HST Q4 return due (for quarterly filers)

Deadlines falling on weekends or federal public holidays are extended to the next business day.

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How ComplyFactor Helps {#how-complyfactor-helps}

ComplyFactor’s Canadian CPAs manage the full corporate tax compliance calendar for MSBs, PSPs, and regulated financial businesses — ensuring that no deadline is missed, no penalty accrues unnecessarily, and that the underlying tax positions are defensible.

Our corporate tax compliance services include:

• T2 corporate tax return preparation and filing — on time, with all required schedules and supporting documentation
• Tax payment and instalment scheduling — modelling optimal payment amounts to eliminate interest exposure
• GST/HST compliance — supply classification, registration, filing, and ITC apportionment
• Payroll compliance — remittance scheduling, T4 and Relevé 1 preparation
• Information return filing — T1134, T1135, T106, T4, T5
• CRA audit representation — response drafting, document preparation, objection filing
• Voluntary Disclosures Program — assessment, preparation, and submission for historic non-compliance
• Penalty and interest negotiation — taxpayer relief applications where appropriate

For MSB-specific compliance, see our Canada PSP and MSB regulatory framework page and Canada tax compliance and financial statements page.

Contact ComplyFactor to build a compliance calendar that keeps your business ahead of every CRA deadline.

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FAQ {#faq}

When is the T2 corporate tax return due in Canada? Six months after the end of the corporation’s fiscal year. For a December 31 year-end, the T2 is due June 30 of the following year.

When must corporate taxes actually be paid? Two months after fiscal year-end for most corporations (February 28 for a December 31 year-end). For eligible CCPCs meeting the small business deduction and taxable capital conditions, three months (March 31 for a December 31 year-end). Interest begins accruing from the payment deadline — not the filing deadline.

What is the penalty for filing a T2 late? 5% of unpaid taxes, plus 1% per complete month the return is late (up to 12 months) for a first offence. For a repeat late filing where CRA previously demanded the return under s.150(2) ITA, the penalty doubles to 10% plus 2% per month, up to 20 months.

What interest rate does CRA charge on unpaid taxes? The prescribed rate plus 4%, compounded daily. The prescribed rate changes quarterly — check CRA’s website for the current rate.

Are directors personally liable for unpaid corporate taxes? Directors are personally liable for unremitted source deductions (CPP, EI, income tax) under s.227.1 of the ITA, and for unremitted GST/HST under s.323 of the ETA. They are not generally personally liable for unpaid corporate income tax (which remains a corporate obligation), unless personal liability arises through director’s guarantees or fraud.

What is the CRA Voluntary Disclosures Program? A CRA programme that allows taxpayers to come into compliance for past errors before CRA initiates contact, with penalty relief and prosecution protection. The disclosure must be voluntary, complete, and relate to a matter that is at least one year old.

What happens if I miss the instalment payment deadline? CRA charges instalment interest at the prescribed rate plus 4%, compounded daily from the due date of the missed or underpaid instalment. There is no separate penalty for late instalments — only interest.

Can I change my corporation’s fiscal year-end? Yes, but it requires CRA approval. A request to change the fiscal year-end must be made before the end of the proposed new fiscal year. The change affects all subsequent filing and payment deadlines.

Related Articles:

• Accounting and Tax Compliance for MSBs in Canada
• Canadian MSB Tax Obligations: Corporate Tax, GST/HST and Reporting
• Common Tax Mistakes Canadian MSBs Make
• MSB Compliance vs Tax Compliance in Canada
• Setting Up an MSB in Canada
• How to Apply for a FINTRAC MSB License
• Canada MSB License: Complete Guide
• RPAA Compliance Guide for Canadian PSPs
• Canada 2025 Assessment of ML/TF Risks
• How to Get Banking for Your Canadian MSB or PSP