What happens after you file a T2 return in Canada?

Filing the corporation income tax return is an important year-end milestone, but it does not always complete the corporate tax process.

After the Canada Revenue Agency receives the T2 return, it must process the information, assess the corporation’s tax position and update its corporate income tax account. The corporation may then receive a refund, have a remaining balance to pay or be asked to provide additional information.

In some cases, the corporation or the CRA may also need to adjust the return after the initial assessment.

Here is what business owners should expect after filing a T2 return in Canada.

1. CRA confirms that the return was received

When a T2 return is filed electronically, the tax software normally receives an immediate confirmation that CRA has received the return. CRA describes this confirmation as legal proof of receipt, so it should be retained in the corporation’s tax records. The transmission confirmation does not mean CRA has reviewed or accepted every amount reported. It only confirms that the electronic submission was received and can proceed to processing.

The corporation should retain:

• the electronic filing confirmation;
• a complete copy of the T2 return and schedules;
• the financial statements used to prepare the return;
• supporting tax calculations and elections;
• proof of corporate tax payments and instalments.

These documents may be needed if the return is delayed, adjusted or selected for review.

2. The T2 return enters CRA’s assessment process

After receiving the return, CRA sends it to the Corporation Services section of the appropriate tax centre for processing. CRA reviews the information submitted, calculates the assessment and updates the corporation’s income tax account. Many straightforward returns are processed without further communication. Processing can take longer when a return includes matters such as:

• refundable tax credits;
• loss carrybacks;
• associated corporations;
• international transactions;
• unusual or inconsistent amounts;
• incomplete information;
• discrepancies with information already available to CRA.

A request for additional information does not necessarily mean that the corporation is undergoing a full audit. CRA may simply need documentation or an explanation before it can complete or revise the assessment.

3. What is the current CRA T2 processing time?

For the 2026-2027 service year, CRA’s published standard is to issue a Notice of Assessment within eight weeks of receiving a digitally filed T2 corporation income tax return. CRA’s performance target is to meet that standard 90% of the time. The eight-week period is a service standard, not a guaranteed completion date. A complex return, a refundable credit claim or a request for supporting documentation can result in a longer CRA T2 processing time.

The corporation can monitor its tax account through My Business Account. Depending on the stage of processing, the online account may show correspondence, payments, assessed transactions and other account activity.

There is usually no need to contact CRA simply because a few weeks have passed. Follow-up becomes more appropriate when the return has been outstanding well beyond the applicable processing standard or when CRA has requested information that has not yet been provided.

4. CRA issues a Notice of Assessment

Once the T2 return has been processed, CRA issues a Notice of Assessment.

Most business correspondence is available online by default through My Business Account unless the corporation has changed its delivery preference to receive paper mail. A corporation registered for email notifications may receive an email advising that new correspondence is available online. The Notice of Assessment reports CRA’s assessment of the return. It may agree with the amounts filed or include adjustments.

The notice should be compared with the final T2 return, paying particular attention to:

• taxable income;
• federal and provincial or territorial tax assessed;
• instalment payments credited to the account;
• tax credits;
• the refund or balance owing;
• loss balances and other tax accounts, where applicable;
• interest and penalties.

A difference does not automatically mean CRA made an error. It could result from a payment allocation, an arithmetic correction, a denied credit or information already held by CRA. Material differences should nevertheless be investigated promptly.

5. Filing the T2 does not extend the tax payment deadline

The corporate tax filing deadline and corporate tax payment deadline are separate.

A corporation’s federal balance of tax is generally due two months after the end of its tax year. Certain qualifying Canadian-controlled private corporations may have three months to pay. The T2 filing deadline is generally six months after the corporation’s tax year-end. As a result, the tax may be due several months before the T2 return is filed.

When a balance remains unpaid after the applicable balance-due date, interest may accumulate even when the return itself is filed on time. Filing the T2 does not suspend interest on tax that was already payable. After filing, the corporation should confirm that:

• all instalments were reported correctly;
• the remaining balance was paid;
• payments were applied to the correct tax year and account;
• no unexpected interest remains on the statement of account.

6. What happens when the corporation expects a refund?

A corporate tax refund may arise when instalments, refundable credits or other payments exceed the final tax assessed for the year.

CRA generally does not refund excess instalment payments until it has assessed the T2 return for the year. CRA may also apply an overpayment against another debt or withhold the refund when a required return is missing from the corporation’s account or a related business-number account. Direct deposit can reduce the delay associated with receiving and depositing a cheque. The corporation should keep its banking information current, particularly after changing financial institutions.

A refund shown on the filed return should not be considered final until the assessment has been issued and the refund has been deposited or otherwise applied.

7. CRA may request supporting documents

CRA can examine specific amounts reported on the return either before or after issuing the initial Notice of Assessment.

Documents may be requested to support items such as:

• large or unusual expenses;
• vehicle and travel costs;
• salaries, bonuses and management fees;
• shareholder transactions;
• dividends;
• related-party transactions;
• capital asset purchases;
• tax credits and losses.

CRA’s letter will normally identify the information required and the response deadline. Providing a complete and organized response can reduce additional correspondence and the risk of CRA making an adjustment based on incomplete information.

Corporate ledgers, returns, financial statements, correspondence, electronic accounting records and supporting documents generally have to be kept for six years from the end of the last tax year to which they relate. The corporation remains responsible for these records even when they are maintained by an accountant, bookkeeper or third-party software provider.

8. What if an error is discovered after filing?

A corporation should not simply file another original T2 return to correct an assessed year.

When an error or omission is discovered, the corporation can request a reassessment. CRA indicates that submitting a reassessment request electronically through current commercial tax software is the fastest method. An adjustment may be required when the corporation:

• omitted income or an expense;
• reported an amount in the wrong category;
• missed an available tax credit;
• reported a dividend incorrectly;
• applied a loss to the wrong year;
• discovered an error in its financial statements;
• received relevant tax information after filing.

The adjustment may result in an additional refund, a reduced loss balance, additional tax payable or interest.

9. How long can CRA reassess a T2 return?

The normal reassessment period generally depends on the corporation’s status at the end of the tax year.

For a Canadian-controlled private corporation, CRA can usually reassess the return within three years from the date of the original Notice of Assessment.

For a corporation that was not a Canadian-controlled private corporation, the normal reassessment period is generally four years. The period may be extended in certain circumstances, including some international transactions and loss or credit carrybacks. Receiving a Notice of Assessment therefore does not mean the tax year is permanently closed. The corporation must continue to retain its records and be able to support the amounts reported.

10. What if the corporation disagrees with the assessment?

The first step is to compare the Notice of Assessment with the filed return and determine the precise reason for the difference.

A payment-allocation issue or straightforward error may sometimes be resolved by contacting CRA or submitting an adjustment request. When the corporation genuinely disagrees with tax, interest or penalties assessed by CRA, it may file a formal Notice of Objection.

The objection generally has to be filed within 90 days from the date of the Notice of Assessment or Notice of Reassessment. If the matter is not resolved through the objection process, the corporation may be able to appeal to the Tax Court of Canada. Because the objection deadline is limited, a significant assessment difference should be reviewed as soon as the notice is received.

11. Review the next year’s corporate tax instalments

The end of the T2 process is also a good time to review the corporation’s instalments for the current tax year.

A significant increase in income may require higher instalments. A substantial decline in business activity may support lower payments when an acceptable calculation method is used and the forecast is reasonably documented.

The corporation and its accountant should review:

• whether instalments are required;
• whether payments are monthly or quarterly;
• the federal and provincial amounts;
• upcoming due dates;
• prior payments applied to the account;
• the risk of instalment interest if payments are underestimated.

This review can help prevent a large unexpected tax balance at the next year-end.

Special considerations for Quebec and Alberta corporations

For most provinces and territories, the T2 return reports both federal and provincial or territorial corporate income tax.

Quebec and Alberta administer their own corporate income tax systems. A corporation with a permanent establishment in either jurisdiction generally has to file a separate provincial corporate income tax return: the CO-17 in Quebec or the AT1 in Alberta. A Quebec corporation may therefore receive two separate assessments:

• a CRA Notice of Assessment for the federal T2 return;
• a Revenu Québec Notice of Assessment for the CO-17 return.

Revenu Québec separately examines the CO-17, determines the corporation’s Quebec tax, credits, interest and penalties, and issues its own assessment. The corporation can review the processing status, payments, refunds and statement of account through My Account for businesses. An Alberta corporation must similarly monitor its separate account with Alberta Tax and Revenue Administration.

CRA’s acceptance or assessment of the T2 does not confirm that a Quebec CO-17 or Alberta AT1 has been filed, processed or paid correctly.

Post-filing T2 checklist

After filing the return, the corporation or its accountant should confirm that:

1. the electronic transmission confirmation has been retained;
2. the corporate tax balance has been paid;
3. payments were applied to the correct tax year;
4. the Notice of Assessment was received and compared with the T2;
5. all assessment differences were explained;
6. the expected refund was received or properly applied;
7. current-year instalments were calculated;
8. separate Quebec or Alberta assessments were reviewed;
9. supporting documents were stored securely;
10. CRA or provincial information requests were answered promptly.

Frequently asked questions

How long does CRA take to process a T2 return?

For 2026-2027, CRA’s service standard is to issue the Notice of Assessment within eight weeks of receiving a digital T2 return. CRA aims to meet this standard 90% of the time, but complex returns may take longer.

Is the electronic filing confirmation the Notice of Assessment?

No. The electronic confirmation proves that CRA received the return. The Notice of Assessment is issued later, after CRA processes and assesses it.

Can the corporation wait for the Notice of Assessment before paying its tax?

The tax balance is generally due two or three months after the corporation’s tax year-end. Waiting for the Notice of Assessment can therefore result in interest if the tax was not paid by the applicable balance-due date.

Can CRA change the T2 after issuing the Notice of Assessment?

Yes. CRA may reassess the return within the applicable reassessment period and, in certain circumstances, after the normal period. The corporation may also request a reassessment when it discovers an error.

Does a request for documents mean the corporation is being audited?

Not necessarily. It may be a limited review of a specific deduction, credit or transaction. The request should still be taken seriously and answered within the stated deadline.

Does the CRA T2 assessment include Quebec corporate tax?

No. Quebec administers its own corporate income tax return and assessment process. A Quebec corporation generally has to file a separate CO-17 return with Revenu Québec. Alberta corporations similarly file a separate AT1 return.

Filing is complete—but the follow-up still matters

Filing the T2 return is only one part of completing the corporation’s year-end tax obligations.

The process is not truly complete until the corporation has reviewed its Notice of Assessment, confirmed its account balance, verified its payments and refunds, and planned the next year’s instalments.

Careful follow-up can identify misapplied payments, assessment differences, withheld refunds and information requests before they become larger problems involving additional interest, reassessments or formal tax disputes.

T2Online.ca assists Canadian corporations with their year-end financial statements and corporate income tax filings. The platform is supported by the professional experience and CPA authority of DFD Chartered Professional Accountant Inc.