Catching Up on Unfiled Corporate Returns in Canada

What happens if a corporation does not file its taxes?

The CRA may demand missing returns, assess tax without a return, charge penalties and interest, and collect an assessed debt. Its non-filer process can escalate to field contact or prosecution. A corporation's tax debt does not disappear because no return was filed: the Income Tax Act says tax liability is not dependent on an assessment.

Check the date and type of every CRA letter first. A demand, assessment and collection notice call for different responses. Payroll deductions and GST/HST remittance debts are especially urgent: the CRA says legal collection action can begin shortly after notification.

Must we file every missing year, even with no income?

A resident corporation generally must file a T2 for every tax year, including inactive years and years with no tax payable. The CRA lists narrow exceptions for certain tax-exempt Crown corporations, Hutterite colonies and registered charities; stopping operations does not end the duty. If the corporation was dissolved, check its dissolution date and whether the CRA was notified; payroll and GST/HST accounts have separate closing steps. A non-resident corporation has different filing triggers (CRA: who files a T2).

A T2 is due within six months after the corporate year-end. The corporate tax balance is generally due 2 months after year-end, or 3 months for an eligible CCPC. There is no general rule that only recent unfiled years need returns. A GST/HST registrant must file for each reporting period, even with no transactions or net tax. Monthly and quarterly returns and payments are due 1 month after the period; annual returns and final payments are generally due 3 months after year-end. Payroll filings depend on whether the corporation paid remuneration or had an open payroll account expecting remittances.

Which returns are missing, and which do we file first?

Map the corporation's obligations by account and period before filing. A T2 year, a GST/HST reporting period, a payroll remittance period and a T4 calendar year are different units, so one catch-up return cannot cover them all.

First check demands, collection action and unpaid payroll or GST/HST amounts; contact the CRA promptly about those balances. In parallel, reconstruct the oldest missing periods first so opening balances, losses and payments roll into later years correctly. Before submitting, reconcile the returns to each other: T2 revenue, GST/HST taxable sales, T4 pay and T5 dividends should tell a consistent story. For Quebec, Revenu Québec administers GST/HST and QST filings. If the corporation should have registered for GST/HST but never did, see when to register.

Check the submission method for each overdue T2 year; some older returns need a different method. See filing your corporate return for the filing steps and exceptions.

How do we get old slips, notices and account statements from the CRA?

Use the corporation's business number to review every program account in My Business Account, or give an authorized representative access. The CRA lists outstanding returns, balances, expected and filed GST/HST returns, payroll details and T2 return status there.

Download the corporation's notices, letters and statements from online mail. For a missing notice or a detailed payment history, the CRA says the Enquiries service can request copies and customized statements. For filed T4 or T5 slips, use View return details in My Business Account: filter by year and return type, then view slips or request a download. Rebuild unfiled slips from source records; a blank CRA screen does not prove no payment was made. Obtain Revenu Québec account history and notices for Quebec obligations.

Gather the business number and program account numbers, incorporation and year-end dates, bank and credit-card statements, sales invoices, expense receipts, payroll registers, prior slips, tax returns, CRA notices and proof of payments. Keep a list of each missing period and its filing status.

What if the books were never kept or the records are gone?

Reconstruct the transactions from the best available evidence before filing. Trace each bank deposit and document whether it is a sale, loan, transfer or other receipt; do not claim an undocumented withdrawal as an expense. Request old statements, invoices and payroll data from the original holders, then reconcile them to the CRA account history. The CRA requires reliable, complete records supported by documents. Missing electronic records must be reported to the CRA and recreated within a reasonable time.

Generally, keep records for a late-filed income tax return for six years after filing; property and share history, CRA directions and unresolved objections can require longer retention. The CRA also says a GST/HST return remains required when a reporting period ended more than six years ago. For the actual reconstruction and year-end statements, see corporate bookkeeping and GIFI.

The CRA sent a demand to file or an arbitrary assessment: what now?

Check whether the letter is a demand or an assessment. Respond promptly to a CRA demand with a realistic filing plan. If the corporation disputes an assessment, check its notice date now: a corporation has 90 days to file a formal objection. Filing a missing return or contacting collections does not file an objection; see reviews, audits and voluntary disclosure for the dispute process.

An assessment under Income Tax Act subsection 152(7) is not a substitute for the missing return. The CRA says it may omit voluntary deductions because it lacks the facts; when the corporation files its actual return, the CRA reviews it and issues a reassessment. The assessed balance can remain collectible while that work proceeds. A demand or existing CRA contact also matters when considering voluntary disclosure, so check that route before submitting a disclosure application.

The CRA froze the corporation's bank account: what can we do?

Treat the bank restriction as an active collection matter. Ask the bank what legal document it received, obtain the corporation's copy, confirm the affected program account and balance with the CRA, and contact the collections officer named on the notice. The CRA can direct a financial institution to send funds it holds to the CRA through a requirement to pay or related garnishment document.

If the balance is disputed, provide the officer with the assessment and missing-return filing plan; a return or objection alone does not necessarily stop collection. If the corporation cannot pay at once, the CRA offers payment arrangements. A payment arrangement does not automatically release an existing requirement to pay: the CRA says it usually keeps the action in place until the account is paid in full or financial hardship is shown. Ask the officer what is needed to change the restriction, and get the answer in writing before relying on the account for payroll or a closing. Payroll and GST/HST remittance debts can move into collection soon after notice; a pending sale or mortgage makes the timing critical.

Are directors personally liable for unpaid payroll deductions and GST/HST?

Directors can be personally assessed for specified unremitted payroll amounts and GST/HST, plus related penalties and interest. That exposure differs from the corporation's ordinary T2 income-tax debt. The CRA must meet collection conditions against the corporation, and a director may have a due-diligence defence if reasonable preventive steps were taken before the failure. The CRA's directors' liability circular says an assessment must be issued within two years after the person last ceased to be a director; simply being uninvolved does not by itself remove the risk.

Identify who was a director in each unpaid period, when each person ceased, and what controls existed for withholding and remitting. If trust amounts were used to fund operations, or a director has received a personal assessment, get tax-preparation help with the account and director records before assuming the corporate return will settle the personal exposure.

Can we still claim input tax credits and old losses?

Some claims may remain available, but filing late does not extend every claim deadline. Under Excise Tax Act subsection 225(4), a typical GST/HST registrant must claim an input tax credit in a return filed by the due date for the last reporting period ending within four years after the original period. For specified persons, the general deadline uses the last reporting period ending within two years after the fiscal year containing the original period; statutory exceptions apply. Check each invoice, registration period and claim deadline before including an old credit.

A properly supported corporate non-capital loss may offset taxable income in other years within the applicable carryover window. The CRA's T2 guide describes a current-year non-capital loss carried back three years or forward 20 years. Older losses may have different windows, and an acquisition of control can restrict loss use. File the loss year with support, then reconcile the assessed loss balance before using it on later returns. A CRA arbitrary assessment may not reflect deductions or losses until the actual return is reviewed.

What will catching up cost in tax, penalties and interest?

There is no useful single estimate before the records and account history are reconciled. Separate corporate income tax, GST/HST net tax, payroll deductions and employer amounts, provincial balances, penalties, interest and the cost of rebuilding records. A nil T2 can still require preparation and filing; a nil GST/HST return can still clear a missing-period notice. Conversely, unpaid trust amounts can create collection and director risk before all T2 years are finished (CRA collections; directors' liability).

Build a period-by-period estimate from reconstructed books, then compare it with CRA assessments, payments and credits. Corporate tax may have been due before the T2 filing deadline, so filing now does not erase interest already accruing. For the calculations and possible cancellation, see penalties, interest and relief. A corporation with an active demand, frozen account, multiple missing years or unclear owner withdrawals has more than a routine filing job.

Do not budget a GST/HST refund as cash yet: the CRA can hold it while required returns or payments are missing, or apply it to a balance. A T2 must be filed within three years after year-end for a cash refund. The CRA may, at its discretion, apply an older T2 credit to eligible established debt under the same business number; debt from a subsection 152(7) assessment is excluded. Confirm any credit's status before counting it toward the catch-up cost.

Example

Illustrative amounts are in Canadian dollars. A corporation has three unfiled T2 years and three unfiled annual GST/HST periods. In year one, it records $100,000 of sales and $80,000 of documented expenses: $20,000 of book profit before tax adjustments. Its GST/HST records separately show $12,000 of net tax to remit. In year two, its supported tax calculation shows a $10,000 non-capital loss and its GST/HST return is nil. In year three, it has no income, expenses, wages or GST/HST transactions.

The corporation checks its CRA accounts and demand dates, then prepares all three T2 years and GST/HST periods. If year-one taxable income also equals $20,000 and the carryback is allowed, a $10,000 loss claim would reduce it to $10,000; book profit alone does not establish taxable income. Years two and three have nil GST/HST returns, and year three still needs a T2 while the accounts remain open. It reconciles the $12,000 total GST/HST net tax against payments already credited and checks whether T4 or T5 slips were required. These figures do not establish penalties, interest or a final balance.

Different for you?

• The CRA sent a review or audit letter, or you are considering disclosure: see reviews, audits and voluntary disclosure.
• The CRA charged penalties or interest: see penalties, interest and relief.
• The books and year-end statements need rebuilding: see corporate bookkeeping and GIFI.
• The owner took money without a clear salary or dividend record: see shareholder loans.
• The corporation never registered for GST/HST but may have needed to: see GST/HST registration.
• The corporation missed T1134, T1135 or T106: see foreign property and affiliate reporting.
• Your own T1 returns are also missing: see catching up on personal returns.
• A bank restriction, director assessment or urgent sale deadline is involved: bring the notices, account statements and transaction records to tax preparation.