Filing a corporate tax return in Ontario can feel confusing, especially if you run a small business and do not deal with tax forms every day. There are financial statements to prepare, CRA schedules to complete, deadlines to track, and payments to make.
For Ontario corporations, the main return is the T2 Corporation Income Tax Return. This return is filed with the Canada Revenue Agency, and it is used to report corporate income, deductions, tax credits, and federal and Ontario corporate tax.
Most resident corporations in Canada have to file a T2 return every tax year, even if they had no income, no tax payable, or were inactive. CRA confirms that resident corporations must file a corporation income tax return each year, with limited exceptions.
This guide explains who needs to file, what documents you need, how the T2 filing process works, what Ontario businesses should watch for, and when it makes sense to get help from a corporate tax accountant in London, Ontario.
Key Takeaways
- Most Ontario corporations must file a T2 Corporation Income Tax Return every tax year.
- The T2 return is due within six months after the corporation’s tax year end.
- Corporation tax payments are generally due two months after year end, but some Canadian controlled private corporations may qualify for a three month balance due date.
- For tax years starting after 2023, most corporations must file their T2 return electronically.
- Ontario corporations also need to handle the Ontario Annual Return separately through the Ontario Business Registry. CRA no longer accepts Ontario annual returns on behalf of the province.
- Clean bookkeeping makes corporate tax filing much easier.
Who Needs to File a Corporate Tax Return in Ontario?
Most corporations in Ontario must file a corporate tax return each year.
CRA states that all resident corporations have to file a T2 return every tax year, except for tax-exempt Crown corporations, Hutterite colonies, and registered charities. This includes inactive corporations, non-profit organizations, and tax-exempt corporations.
So, if your Ontario corporation is active, inactive, profitable, or showing a loss, you may still need to file.
Common examples include:
- Canadian controlled private corporations
- incorporated small businesses
- professional corporations
- holding companies
- corporations with no activity
- corporations with business losses
- corporations with investment income
- incorporated non-profit organizations, unless a specific exception applies
A sole proprietor does not file a T2 return because the business is not incorporated. Sole proprietors usually report business income on their personal tax return.
What Is the T2 Corporation Income Tax Return?
The T2 Corporation Income Tax Return is the main corporate tax return for Canadian corporations.
For Ontario corporations, the T2 return covers federal corporate tax and Ontario corporate tax in one return. CRA explains that the T2 form serves as a federal, provincial, and territorial corporation income tax return, except for corporations located in Quebec or Alberta, where a separate provincial corporate return is required.
The T2 return usually includes:
- corporation name and business number
- tax year start and end dates
- income statement details
- balance sheet details
- taxable income calculations
- deductions and credits
- Ontario tax calculation
- shareholder and dividend details, if applicable
- schedules for losses, capital assets, dividends, and other items
Most corporations also need to include financial information using GIFI codes. GIFI stands for General Index of Financial Information. These codes help CRA read and process your financial statements in a standard format.
Common T2 Schedules Your Corporation May Need
Not every corporation needs the same schedules. The schedules depend on the type of business, income, expenses, assets, losses, dividends, and credits.
Some common schedules include:
Schedule 1: Net Income for Tax Purposes
This schedule adjusts accounting income to taxable income. For example, some expenses shown in your books may not be fully deductible for tax purposes.
Schedule 100: Balance Sheet Information
This reports the corporation’s assets, liabilities, and shareholder equity using GIFI codes.
Schedule 125: Income Statement Information
This reports business revenue, expenses, and net income using GIFI codes.
Schedule 8: Capital Cost Allowance
This is used when the corporation owns depreciable assets, such as equipment, vehicles, computers, furniture, or machinery.
Schedule 50: Shareholder Information
This may be required when shareholders own 10% or more of any class of shares.
Schedule 5: Tax Calculation Supplementary
This schedule is used for provincial or territorial tax calculations when needed. CRA explains that provincial or territorial tax can be reported through the T2 system for provinces other than Quebec and Alberta.
Step-by-Step Guide to Filing a Corporate Tax Return in Ontario
Step 1: Confirm Your Corporation’s Tax Year
A corporation does not always follow the calendar year.
Your tax year may end on December 31, but it could also end on another date, such as March 31 or June 30. The filing deadline depends on your corporation’s fiscal year end.
CRA says a corporation must file its return within six months of the end of each tax year. If the tax year ends on the last day of a month, the return is due on the last day of the sixth month after year end. If the tax year ends on a different day, the return is due on the same day of the sixth month after year end.
For example:
- Year end March 31: filing due September 30
- Year end June 30: filing due December 31
- Year end September 23: filing due March 23
- Year end December 31: filing due June 30
Step 2: Gather Your Corporate Records
Before preparing the T2 return, collect all key records.
You will usually need:
- business number
- articles of incorporation
- prior year T2 return
- prior year notice of assessment
- bank statements
- credit card statements
- sales records
- invoices issued
- supplier bills
- payroll records
- HST returns, if registered
- loan statements
- lease agreements
- asset purchase records
- vehicle expense records
- shareholder loan details
- dividend or salary records
- investment income records, if any
If your bookkeeping is not up to date, finish that first. A T2 return based on messy or incomplete books can lead to wrong income, missed deductions, CRA questions, or a poor tax result.
Step 3: Prepare Financial Statements
Your accountant will usually prepare or review financial statements before completing the T2.
These may include:
- income statement
- balance sheet
- trial balance
- general ledger
- accounts receivable listing
- accounts payable listing
The income statement shows revenue, expenses, and profit or loss.
The balance sheet shows what the corporation owns and owes, including bank balances, loans, equipment, HST payable, payroll liabilities, and shareholder loans.
This step is important because the T2 return is built from the corporation’s financial records.
Step 4: Review Corporate Expenses
Before filing, review your business expenses carefully.
Common deductible expenses may include:
- rent
- office supplies
- software
- advertising
- professional fees
- insurance
- bank charges
- wages
- subcontractor payments
- vehicle expenses, where properly supported
- meals and entertainment, subject to tax limits
- repairs and maintenance
- training costs
- business phone and internet
Not every expense is fully deductible. Some expenses have limits, and some personal costs should not be claimed by the corporation.
A good review helps avoid two problems: missing valid deductions or claiming expenses that should not be claimed.
Step 5: Review Payroll, HST, and Source Deductions
If your corporation pays employees or pays you a salary, payroll records should be checked before filing.
You should review:
- wages paid
- source deductions
- CPP contributions
- EI, where applicable
- T4 slips
- payroll remittances
- year end payroll balances
If your corporation is registered for HST, review HST filings as well.
Make sure your HST collected, input tax credits, payments, and balances match your bookkeeping records. If the books say one thing and CRA filings say another, the difference should be fixed before the T2 return is filed.
Step 6: Complete the T2 Return and Required Schedules
Once the records are ready, the T2 return can be prepared.
For tax years starting after 2023, most corporations must file their T2 return electronically. CRA lists limited exceptions, including insurance corporations, non-resident corporations, corporations reporting in functional currency, and corporations exempt from tax payable under section 149 of the Income Tax Act.
A corporate tax accountant or tax preparer usually prepares the return using CRA-certified tax software.
Step 7: File the Return Electronically
Most Ontario corporations must file electronically through approved methods, such as Corporation Internet Filing or tax software used by an authorized preparer.
CRA says Corporation Internet Filing gives immediate confirmation of receipt and can result in faster refunds.
After filing, keep the confirmation number with your tax records.
Step 8: Pay Any Balance Owing
Filing the return and paying the tax are not the same thing.
The T2 return is due six months after year end, but the tax balance is usually due earlier. CRA says corporation taxes are generally due two months after the tax year end, while some Canadian controlled private corporations may qualify for a three month balance due date if they meet the required conditions.
This means your corporation may need to pay tax before the T2 filing deadline.
Corporations can usually pay through:
- CRA My Business Account
- online banking
- pre-authorized debit
- a financial institution
- third party payment service providers accepted by CRA
If you wait until the T2 return is filed, interest may already be building on the unpaid balance.
Do Ontario Corporations Need to File an Annual Return?
Yes, many Ontario corporations must also file an Ontario Annual Return. This is separate from the T2 corporate tax return.
The Ontario Annual Return updates company information with the Ontario Business Registry. Ontario states that corporations can file their annual return directly in the Ontario Business Registry, and CRA stopped accepting Ontario annual returns on behalf of Ontario in 2021.
This is not the same as paying corporate tax.
In simple terms:
- T2 return: filed with CRA for corporate income tax
- Ontario Annual Return: filed with Ontario Business Registry for corporate information updates
Business owners often confuse the two. Filing one does not always mean the other has been handled.
Ontario Corporate Tax Rates: What Small Businesses Should Know
Ontario corporate tax depends on the type of income and whether the corporation qualifies for the small business deduction.
CRA states that the federal small business tax rate for Canadian controlled private corporations claiming the small business deduction is 9%.
For Ontario, CRA states that the Ontario small business deduction results in a lower Ontario rate of 3.2%.
This does not mean every corporation pays the small business rate. Eligibility depends on the type of corporation, taxable income, associated corporations, passive investment income, and other rules.
A corporation with investment income, foreign income, or related corporations may need a more detailed review.
What If Your Corporation Had No Income?
A corporation may still need to file.
CRA says inactive corporations must file a T2 return every tax year unless a specific exception applies.
So, even if your corporation earned no revenue, had no expenses, or did not operate during the year, do not assume you can skip filing.
This is common for:
- newly incorporated businesses
- holding companies
- dormant corporations
- corporations between projects
- businesses that paused operations
Filing a nil return is often better than ignoring the filing requirement.
Special Corporate Tax Situations to Watch
Some corporations need extra schedules, forms, or review.
Holding Companies
Holding companies may earn dividend income, interest income, rental income, capital gains, or other investment income.
These items can affect tax rates, refundable taxes, passive income rules, and shareholder planning. A holding company return may look simple, but it can still need careful tax work.
Corporations With Foreign Property
If a corporation owns specified foreign property with a total cost amount over $100,000 at any time in the year, Form T1135 may be required. CRA explains that Form T1135 has reporting rules for specified foreign property over this threshold.
Missing this form can lead to penalties, so foreign assets should be reviewed before filing.
Corporations With Losses
If your corporation had a loss, the T2 return still matters.
Business losses may be carried back or carried forward, depending on the type of loss and tax rules. This can help reduce taxable income in other years if handled correctly.
Corporations With Capital Assets
If your business owns equipment, vehicles, furniture, leasehold improvements, or computers, you may need to calculate Capital Cost Allowance.
This should be done carefully because claiming too much or too little CCA can affect future tax planning.
Corporations With Payroll
If the corporation has employees, T4 slips, payroll remittances, salaries, bonuses, and shareholder wages should be reviewed before filing.
Payroll errors can create CRA penalties and year end problems.
Corporations With HST Accounts
If your corporation is registered for HST, compare the HST returns with your accounting records before filing the T2.
A mismatch can lead to confusion later if CRA reviews your account.
Common Mistakes When Filing a Corporate Tax Return
Filing Late
CRA applies a late filing penalty when a corporation files after the deadline and has unpaid tax. The penalty is 5% of the unpaid tax due on the filing deadline, plus 1% of that unpaid tax for each complete month the return is late, up to 12 months.
Paying Late
Even if the T2 is filed on time, late payment can still lead to interest. Since the tax balance is generally due two or three months after year end, waiting six months to pay can be costly.
Ignoring an Inactive Corporation
An inactive corporation may still need to file a T2 return. Skipping the return can lead to CRA notices and possible penalties.
Mixing Personal and Corporate Expenses
Corporate money should not be treated like personal money. Personal withdrawals may need to be recorded as salary, dividends, shareholder loans, or reimbursements.
Not Tracking Shareholder Loans
Shareholder loan accounts are a common problem for small corporations. If owners take money out of the company without proper records, it can create tax issues.
Forgetting the Ontario Annual Return
The Ontario Annual Return is separate from the T2. Filing the corporate tax return does not automatically update your corporation’s Ontario registry information.
Missing Foreign Property Reporting
If the corporation owns specified foreign property over the reporting threshold, Form T1135 may be needed.
Corporate Tax Filing Checklist for Ontario Businesses
Before filing your T2 return, check these items:
- Confirm corporation name and business number
- Confirm tax year start and end dates
- Update bookkeeping records
- Reconcile bank accounts
- Reconcile credit card accounts
- Review sales and invoices
- Review unpaid invoices
- Review supplier bills
- Check payroll records
- Check HST filings, if registered
- Review loans and interest
- Review shareholder withdrawals
- Review dividends or salary payments
- Gather asset purchase records
- Review vehicle and home office claims, if any
- Check foreign property reporting
- Prepare financial statements
- Complete T2 schedules
- File electronically
- Pay any balance owing
- File the Ontario Annual Return separately, if required
- Save the CRA confirmation number and notice of assessment
How Multi Tax Services Can Help
Corporate tax filing is not only about submitting a form. It starts with clean books, correct records, and the right tax treatment for income, expenses, payroll, HST, shareholder loans, and assets.
Multi Tax Services helps businesses in London, Ontario with:
- corporate tax return filing
- bookkeeping cleanup
- financial statement preparation
- payroll support
- HST review and filing
- CRA account guidance
- shareholder loan review
- year end tax planning
- Ontario business compliance support
If your corporation has grown, changed, hired staff, bought assets, or missed past filings, getting professional help can reduce stress and lower the risk of avoidable mistakes.
Conclusion
Filing a corporate tax return in Ontario becomes much easier when your records are clean and your deadlines are clear. Most corporations need to file a T2 return every year, even if they had no income or no tax payable.
The key steps are simple: prepare your books, review payroll and HST, complete the T2 schedules, file electronically, pay any balance owing, and remember that the Ontario Annual Return is a separate filing.
For small business owners in London, Ontario, the biggest risk is not the T2 form itself. It is filled with messy records, missing deadlines, overlooking shareholder loans, or forgetting tax accounts like payroll and HST.
MultiTax Services can help you prepare your corporate tax return properly, stay compliant with CRA requirements, and keep your business records ready for the next tax year.
FAQs About Filing Corporate Tax in Ontario
How do I file a corporate tax return in Ontario?
You file a T2 Corporation Income Tax Return with CRA, usually through electronic filing. The return includes federal tax and Ontario corporate tax details for Ontario corporations.
Who has to file a T2 return?
Most resident corporations in Canada must file a T2 return every tax year, even if they had no income, no tax payable, or were inactive.
What is the deadline to file a corporate tax return?
A corporation must file its T2 return within six months after the end of its tax year.
When is corporate tax payment due?
Corporation tax balances are generally due two months after year end. Some Canadian controlled private corporations may qualify for a three month balance due date if they meet the required conditions.
Can I file my Ontario corporate tax return online?
Yes. For tax years starting after 2023, most corporations must file their T2 return electronically, with limited exceptions.
Is the Ontario Annual Return the same as the T2 return?
No. The T2 return is for corporate income tax and is filed with CRA. The Ontario Annual Return updates corporation information with the Ontario Business Registry. CRA no longer accepts Ontario annual returns for the province.
Does an inactive corporation need to file a T2 return?
Usually, yes. CRA states that inactive corporations must file a T2 return unless a specific exception applies.
What happens if a corporation files late?
If a corporation files late and has unpaid tax, CRA may charge a penalty of 5% of the unpaid tax, plus 1% for each complete month late, up to 12 months.
