Unfiled Corporate Tax Returns in Ontario: How to Catch Up

Prepared by Toronto Tax & Accounting Solutions Inc., Office 19, 695 Markham Road, Scarborough, Ontario. Last reviewed October 16, 2026 against the CRA pages listed at the end. This article provides general information and may not apply to every tax situation.

An Ontario corporation with unfiled T2 returns can work in this order:

1. List every unfiled year and every GST/HST or payroll account that is behind.
2. Collect the CRA letters it has received.
3. Review whether the CRA’s Voluntary Disclosures Program (VDP) could apply.
4. Gather records and file.

The rules below are federal CRA rules that apply to Ontario corporations, as they stood on October 16, 2026. Each links to the CRA page it comes from. The guide is written for incorporated business owners with missing T2 years, incomplete records, and related GST/HST or payroll gaps.

The catch-up sequence, in order

1. List what is outstanding. Every tax year, GST/HST reporting period and payroll period with no filed return, checked against what the CRA shows.
2. Collect every CRA letter and notice, with the date each arrived and any deadline it sets. Letters can change your options.
3. Review VDP eligibility before you submit the overdue returns. This is practical sequencing, not a CRA instruction, and not a reason to delay. See the VDP section.
4. Deal with payment separately. Payment deadlines are not tied to the date you file. See “What do late T2, GST/HST and payroll filings cost?”
5. Gather records for each unfiled year, and note what is missing.
6. Get the scope and fee in writing for each year and account before work begins.
7. Prepare and file the returns, pay any balance or ask the CRA about a payment arrangement, then file and pay future years on time.

How do I find out which returns and accounts are outstanding?

List every tax year, GST/HST reporting period and payroll period since the corporation was incorporated or registered. Then compare your list with what the CRA shows in My Business Account. Treat each tax separately: a corporation can be current on payroll and years behind on its T2, or the reverse.

• T2 (corporate income tax). Write down every tax year since incorporation. Mark each year for which you hold a filed return and a notice of assessment. The unmarked years are your candidates.
• GST/HST. If the corporation is registered, list each reporting period since registration and mark the returns that were filed.
• Payroll. List the periods in which remittances were due and each calendar year for which T4 slips were due.

In My Business Account, the corporation income tax (RC), GST/HST (RT) and payroll (RP) accounts show return status or expected and filed returns. The account lists “Outstanding returns and balances” and “Filing and balance confirmation” services. If nobody in the business has access, tell us when you contact us.

What do late T2, GST/HST and payroll filings cost?

These are federal CRA rules. Filing deadlines and payment deadlines are separate, and each account has its own dates, so there is no single deadline for every corporation. Late-filing penalties stop growing at their caps, but interest continues on unpaid amounts.

T2 returns: deadlines and penalties

Filing deadline. A T2 is due within six months of the tax year-end. For a March 31 year-end, that is September 30.

Payment deadline (balance-due day), separate from filing. The balance of tax is due two months after year-end. It is due three months after year-end only if all of these apply (CRA, balance-due day):

• the corporation was a Canadian-controlled private corporation (CCPC) for the entire tax year;
• it claimed the small business deduction for the current or previous tax year; and
• either (a) it is not associated with another corporation and its previous-year taxable income was no more than its business limit for that year, or (b) it is associated with another corporation and the combined taxable income of all the associated corporations for their last tax years ending in the previous calendar year was no more than the combined business limits for those years.

For a March 31 year-end, that is May 31, or June 30 if all three conditions are met. The payment date falls before the filing date, and an unfiled return does not move it. The CRA page has the full conditions and exceptions, including the effect of amalgamations and wind-ups.

Late-filing penalty. The penalty is 5% of the tax that was unpaid at the filing deadline, plus 1% of that unpaid tax for each complete month the return is late, up to 12 months (CRA, avoiding penalties).

• Worked example. Assume $10,000 of tax was unpaid at the filing deadline and the return is filed four complete months late. The penalty is $500 plus 4 × $100, or $900, before interest.
• Cap. At 12 months the penalty reaches 17% of the unpaid tax, which is $1,700 in this example.
• Assumptions. The $10,000 is the tax still unpaid at the filing deadline, and this is not a repeat late filer.

Exception. The percentages apply to unpaid tax, so a year with no unpaid tax generally has no late-filing penalty. The return is still due (CRA, avoiding penalties).

Repeat late-filing penalty. The penalty becomes 10% of the unpaid tax plus 2% for each complete month late, up to 20 months. This applies only when both conditions are met: the CRA issued a demand to file under subsection 150(2), and it assessed a failure-to-file penalty in any of the three previous tax years (CRA, avoiding penalties).

E-filing. For tax years starting after 2023, most corporations must file the T2 electronically, with listed exemptions. The CRA applies a penalty to returns that should have been e-filed and were not (CRA, avoiding penalties).

GST/HST returns: late-filing penalty

Rule. The late-filing penalty is 1% of the balance owing, plus 25% of that 1% for each complete month the return is late, up to 12 months (CRA, GST/HST filing penalties).

• Worked example. Assume $2,000 is owing on the return and it is filed four complete months late. The penalty is $20 plus 4 × $5, or $40, before interest.
• Cap. At 12 months the penalty is $20 plus 12 × $5, or $80, which is 4% of the balance.
• Assumptions. The $2,000 is the balance owing on that one return.

Exceptions and add-ons. No late-filing penalty applies when nothing is owing or a refund is due. If you do not file after the CRA demands a return, a separate $250 penalty applies (CRA, GST/HST filing penalties).

Payroll remittances and T4 slips

Late remittances. The penalty is 3% for a payment one to three days late, 5% for four or five days, 7% for six or seven days, and 10% for more than seven days late or if nothing is remitted.

• Generally the penalty applies only to the part of the unremitted amount over $500.
• If the failure was made knowingly or through gross negligence, it applies to the full amount.
• If the CRA assesses this penalty more than once in a calendar year, a 20% penalty can apply to the second or later failures, but only if those failures were made knowingly or through gross negligence.
• Interest also applies to unpaid amounts, including unpaid penalties.

Source: CRA, Employers’ Guide T4001. Check the guide for the complete rules.

Director liability. Directors of a corporation that fails to deduct, remit or pay these amounts can be personally liable along with the corporation. The CRA says directors who act to ensure compliance are generally not held personally responsible (CRA, Employers’ Guide T4001).

T4 slips. Slips are due by the end of February after the calendar year, or the next business day when that falls on a weekend. For a late T4 return, the CRA says it applies an administrative policy that reduces the penalty. For 1 to 50 slips, the calculation is $10 per day late, subject to a $100 minimum and a $1,000 maximum. The $100 is a floor, not an extra charge added to the daily amount (CRA, filing the T4 slip and summary). The guide lists different amounts for larger numbers of slips.

Can the Voluntary Disclosures Program reduce penalties on unfiled returns?

Sometimes. The VDP can reduce penalties and part of the interest on returns that are at least one year past due (income tax) or at least one reporting period past due (GST/HST). The application must be voluntary and complete, and the tax owing must be paid or a payment arrangement requested. The VDP does not reduce the tax itself, and the CRA decides each application (IC00-1R7, para. 10; GST/HST Memorandum 16-5-1, para. 8).

The current rules apply to applications received on or after October 1, 2025. They are CRA administrative policy, not legislation. Relief is granted at the Minister’s discretion and the CRA can revise the policy (IC00-1R7, paras. 5 and 7). The earlier versions are archived. The CRA lists the changes on its Changes to the VDP page.

Conditions: income tax and GST/HST are different

Condition	Income tax (IC00-1R7)	GST/HST (Memorandum 16-5-1)
Timing	The information is at least one year past its filing due date (para. 10). The CRA’s example is a prior-year return that was never filed and is now a year late.	The information relates to a reporting period that is at least one reporting period past its filing due date (para. 8).
Voluntary	No audit or investigation has been initiated against you or a related taxpayer concerning the information being disclosed (para. 17).	No audit or investigation has been initiated against you or a related person concerning the information being disclosed (para. 15).
Complete	All relevant information and documents for all required years (para. 10).	Supporting documents, plus prompt and comprehensive answers to all CRA requests for information (para. 8).
Penalties or interest	The error or omission involves applicable penalties, interest or both (para. 10).	The same (para. 8).
Payment	The estimated tax owing is paid, or a payment arrangement is requested, if it applies. The CRA does not guarantee that an arrangement will be approved (paras. 10 and 32).	The same (paras. 8 and 30).
Documents for the application	The most recent six years, or ten years for foreign-sourced income or assets (para. 27).	The most recent four years (para. 25).

The audit or investigation restriction is not limited to the CRA: the circular also names law enforcement and other regulators. The CRA’s wording is “in respect of the information being disclosed.” Each account is judged on its own rules. The CRA also says it continues to restrict eligibility for taxpayers it considers egregiously non-compliant (income tax eligibility page).

What the VDP does not cover, and the sequencing question

The CRA says relief is typically not available when the application relates to returns resulting in a refund or no taxes or penalties owing, or for penalties and interest that have already been assessed (IC00-1R7, para. 11).

A late return is normally assessed when it is filed, penalties included. As a practical sequence, review VDP eligibility before the overdue returns are submitted, so the review does not come too late for penalties that would otherwise be assessed. That is practical sequencing, not a CRA instruction. It is not a reason to delay compliance. The review can be quick, the returns are still due, a letter may carry its own deadline, and interest continues on unpaid amounts. If you decide the VDP does not fit, file.

Payment is a separate step from filing. Do not wait until the returns are filed to deal with it. The payment deadlines above do not depend on the filing date, and a VDP application has to include payment of the estimated tax owing or a request for a payment arrangement.

Prompted and unprompted applications

The CRA classifies each application as unprompted or prompted, and the class sets the relief it will normally consider (IC00-1R7, paras. 19 to 21; Memorandum 16-5-1, paras. 17 to 19).

	Unprompted	Prompted
When it applies	There has been no verbal or written communication about an identified compliance issue related to the disclosure. An education letter or notice offering only general guidance does not count as prompting.	You apply after the CRA communicated with you about an identified issue, for example by identifying a specific error or omission on your account. It also applies when the CRA has already received information from third parties about your possible non-compliance.
Relief the CRA normally considers	General relief: 100% of applicable penalties and 75% of applicable interest.	Partial relief: up to 100% of applicable penalties and 25% of applicable interest.

These are normal outcomes, not promises, and neither level reduces the tax owing.

The six-, four- and ten-year periods are not limits

These periods say how many years of supporting documents to include with an application. Years inside the window with no errors or omissions need not be included, and the CRA may ask for earlier years. Where books and records do not exist, taxpayers should make all reasonable efforts to provide estimates (IC00-1R7, paras. 27 to 29).

They are not a cutoff for outstanding returns or tax owing. The same applies to the six-year rule for keeping records, which says how long to keep records, not how far back a return can be unfiled.

Before you decide: pre-disclosure discussion and other relief

The CRA offers a pre-disclosure discussion that can happen before you reveal your identity. It is informal and non-binding, does not guarantee relief, and does not limit the CRA’s ability to audit or penalize you (IC00-1R7, paras. 13 and 14). Applications use Form RC199.

If the VDP does not fit, taxpayer relief is a separate route. The CRA considers requests based on financial hardship, extraordinary circumstances, and CRA actions such as delays or errors. Requests go through My Business Account or Form RC4288, and relief is not automatic. Check the CRA page for eligibility and time limits.

How do CRA letters affect a VDP application?

A CRA letter can change how an application is classified or whether the VDP is available. Note the date of every letter, the account and year it refers to, and any deadline it sets.

What the CRA has sent or done	What it changes
A general education letter or notice that only offers general guidance	A later VDP application is still treated as unprompted. The returns remain due.
A letter or notice identifying a specific error or omission on your account	A VDP application would normally be prompted: partial relief, not general relief.
The CRA already holds third-party information about your possible non-compliance	A VDP application is prompted. This applies even if you have not received a letter.
A non-filer letter or a demand to file	The CRA can require a return under subsection 150(2) of the Income Tax Act and can assess on its own if returns stay unfiled (CRA, unfiled tax returns). The letter may set a deadline, and an application made after it may be treated as prompted. The VDP circular does not set out a specific rule for demands to file, so confirm the position with the CRA before relying on the VDP.
Notice of an audit or investigation concerning the same information	The application is not voluntary, so the VDP is not available for that information (IC00-1R7, para. 17).
A notice of assessment that already includes penalties or interest	The VDP does not relieve penalties and interest already assessed. Taxpayer relief is the separate route.

What records do I need for each unfiled year?

Bring the records below for each unfiled year. The first five rows match the checklist in our corporate year-end records tracker (Excel) and the printable one-page checklist (PDF). Use a separate copy of the tracker for each year so the gaps stay visible.

Area	Bring
Corporation	Business number and registered name; articles of incorporation and any amendments; names, addresses and share percentages of all shareholders
Earlier filings	Prior T2 returns, notices of assessment and financial statements, for the years on either side of each gap
Banking and credit	Bank, credit card, line of credit and loan statements for the full fiscal year
Revenue and expenses	Sales invoices and records of all revenue; purchase receipts and bills; the bookkeeping file or a trial balance, if one exists
Year-end balances and assets	Accounts receivable and payable at year-end; inventory count, if any; invoices for assets bought and details of assets sold; loan agreements, leases and vehicle details
GST/HST	Registration date, filing frequency, and the returns already filed
Payroll and owner pay	Remittance records, T4 summaries and slips already issued, and any T5 slips for dividends
CRA correspondence	Every letter, notice of assessment, arrears statement and demand, with the date it arrived

Missing records are common. Start with bank and credit card statements and tell us what you cannot find. Do not email banking credentials or passwords. For SINs, employee tax information, and full tax slips, contact us first for instructions on the safest way to send documents. If the books themselves are behind, see our bookkeeping catch-up page.

What does Toronto Tax & Accounting Solutions Inc. offer, and what does it cost?

This section describes our services. It is not a CRA rule.

Toronto Tax & Accounting Solutions Inc. has one office, at Office 19, 695 Markham Road, Scarborough, Ontario. It serves Toronto and the GTA and files remotely for clients anywhere in Canada except Quebec. We work in English, Urdu and Punjabi. Walk-ins are welcome during office hours (see the contact page for current hours), and calling ahead is optional.

For a catch-up, we offer:

• Preparation and electronic filing of the federal T2 for each tax year, quoted per year. See corporate tax filing in Toronto.
• Bookkeeping catch-up for past months or years, quoted separately in writing.
• GST/HST filing and payroll services, quoted separately.
• Help organizing your records for each year.

We do not promise penalty relief or any particular outcome. The CRA decides every VDP application and relief request, and whether to apply is your decision. Ask us what we can and cannot do for your situation before work starts.

Starting fees (CAD, per tax year, before HST): from $250 for a nil return, subject to our review of the corporation’s activity and records, and from $499 for an active corporation when you provide financial statements. Both cover preparing and electronically filing the federal T2. These are starting points, not fixed fees, and having no income does not by itself mean a return qualifies for the nil price. The Ontario annual return, payroll filings, and bookkeeping and financial statement preparation are not included; each is quoted separately in writing. GST/HST returns and other filings are confirmed in your written quote. See what a T2 costs in Toronto for the factors that change the amount of work.

How to request a catch-up quote

A scoped quote names the years and accounts it covers, so you know what you are paying for before work starts.

1. Reach us. Call (437) 410-7999, email Info@torontax.ca, use the contact form, or walk in during office hours.
2. Say what is behind. In the form, choose “Prior-year or late returns” under “What do you need help with?” Then tell us in the message:
   • your year-end dates;
   • which T2 years are unfiled;
   • which GST/HST periods and payroll filings are behind;
   • the date and type of each CRA letter;
   • whether books exist and where; and
   • whether you have already contacted the CRA about this.
3. Get the scope in writing. We confirm the scope and fee in writing, including each earlier unfiled year, before work begins. Work outside the agreed scope is quoted in writing before it begins.

For deadlines and penalties on a current-year T2, see our T2 filing requirements and deadlines guide. Personal returns that are also behind follow different rules: see our personal late-filing guide.

Next step

Send us your year-end dates and which returns, GST/HST periods or payroll filings are behind, along with any CRA letters. Request a catch-up quote or call (437) 410-7999.

Official sources used

All pages were reviewed on October 16, 2026. Dates are the modified or issue dates the CRA shows.

• IC00-1R7, Voluntary Disclosures Program (September 10, 2025; applications received on or after October 1, 2025)
• GST/HST Memorandum 16-5-1, Voluntary Disclosures Program (September 2025)
• Changes to the VDP (October 1, 2025)
• VDP income tax eligibility (October 1, 2025)
• Form RC199 (October 1, 2025)
• When to file your corporation income tax return (May 26, 2025)
• Balance-due day (January 21, 2026)
• Avoiding penalties, corporations (May 5, 2026)
• GST/HST filing penalties (June 16, 2025)
• Employers’ Guide, Payroll Deductions and Remittances (T4001) (January 21, 2026)
• Employers’ Guide, Filing the T4 Slip and Summary (RC4120) (January 6, 2026)
• Where to keep your records and for how long (August 3, 2026)
• Unfiled tax returns (Non-Filer Program) (December 19, 2024)
• Services in My Business Account (September 25, 2024)
• Request taxpayer relief (December 12, 2024)

Last reviewed October 16, 2026. Prepared by Toronto Tax & Accounting Solutions Inc. This article provides general information and may not apply to every tax situation.

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