What happens if I file my taxes late in Canada

Short answer

The CRA charges 5% of the balance owing plus 1% for each full month the return is late, up to 12 months. A repeat late filing within three years doubles this to 10% plus 2% per month, up to 20 months.

How the penalty actually compounds

The first-time late-filing penalty is 5% of the unpaid balance plus 1% per complete month the return remains outstanding, capped at 12 months. A return six months late with $20,000 owing attracts $1,000 plus $1,200, so $2,200 before interest.

The repeat penalty is where it becomes punitive. If the CRA issued a formal demand to file, and you were charged a late-filing penalty in any of the three preceding years, the rate doubles to 10% plus 2% per month for up to 20 months. The same $20,000 balance becomes $2,000 plus $8,000.

Note the base: penalties apply to the balance owing. If you file late but owe nothing, there is no late-filing penalty — though you may still delay benefits and credits.

Interest runs separately and daily

Interest is charged on top of penalties, compounded daily, from the payment due date. The CRA sets the prescribed rate quarterly and it has run materially above commercial lending rates in recent years.

Critically, interest is charged on the penalty as well as the tax. And unlike a business loan, interest on overdue tax is not deductible. This is why filing on time and paying late is almost always cheaper than filing late — the filing penalty is the larger and faster-growing component.

The deadlines that actually apply to you

Personal (T1) — 30 April. Self-employed individuals and their spouses have until 15 June to file, but any balance owing is still due 30 April.
Corporate (T2) — six months after fiscal year-end. Balance owing is due two months after year-end, or three months for a CCPC claiming the small business deduction.
GST/HST — depends on filing frequency; annual filers with a 31 December year-end generally file by 30 June.
Payroll remittances — by the 15th of the following month for regular remitters, with accelerated schedules for larger payrolls.
T4/T5 slips — last day of February.

The corporate structure catches people out most often: the return is due at six months but the money is due at two or three. Filing on time does not stop interest running on an unpaid balance.

Payroll penalties are far harsher

Source deductions are held in trust for the Crown, and the CRA treats failure to remit them very differently from other late payments. The penalty is 3% to 10% depending on how late, rising to 20% for a second or subsequent failure in the same calendar year where it was made knowingly or through gross negligence.

Directors can also be held personally liable for unremitted source deductions and GST/HST. Incorporation does not shield you from this, which makes payroll remittance the single most important date in a business owner's calendar.

The Voluntary Disclosures Program

If you are behind, the VDP may cancel penalties and part of the interest. To qualify the disclosure must be genuinely voluntary — made before the CRA contacts you about the issue — as well as complete, involve a potential penalty, and include information at least one year overdue.

The programme is materially less generous than it once was, and applications are assessed on their facts. The critical point is timing: once the CRA opens an enquiry, the door closes. If you know you are behind, acting now preserves an option that disappears the moment a letter arrives.

What to do if you cannot pay

File anyway. The filing penalty is the largest and fastest-growing charge, and it applies whether or not you can pay. Filing on time with a nil payment stops that penalty entirely and leaves only interest running.

The CRA will generally agree a payment arrangement if you contact them and can demonstrate the plan is realistic. Taxpayer relief provisions may also cancel penalties and interest in cases of serious illness, natural disaster, or CRA error or delay — but relief is discretionary and requires a documented application.

Primary sources

Income Tax Act, s. 150 Filing returns of income — general rule
Income Tax Act, s. 162(1) Failure to file return of income

Reviewed for the 2025 tax year by Udit Gupta, Certified Tax Accountant. General information, not advice for your specific situation — book a free 15-minute call to discuss your circumstances.

What happens if I file my taxes late in Canada? Frequently Asked Questions

Common questions regarding our compliance workflows and service guarantees.

There is no late-filing penalty when no balance is owing. However, you delay your refund, and benefits such as the Canada Child Benefit and GST/HST credit can be interrupted because they are recalculated from your filed return.

You can file returns for prior years at any time, and generally claim refunds up to ten years back through a taxpayer relief request. Catch-up filing is routine work and better done in sequence.

They can issue an arbitrary assessment under subsection 152(7), estimating your income without any of your deductions or credits. These assessments are almost always far higher than a properly prepared return.

No. Interest continues to accrue on the outstanding balance throughout the arrangement. An arrangement prevents collection action, it does not freeze the debt.

Through the Voluntary Disclosures Program if you come forward first, or through taxpayer relief for circumstances beyond your control. Both require a documented application rather than a phone call.

Multi-year catch-up work is a core service. We rebuild the records year by year, file in sequence, and assess VDP eligibility before contacting the CRA on your behalf.

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Related Questions Canadians Search

The questions Canadians actually search on this topic, answered plainly. Browse every question in the Canadian tax answers directory.

A tax return is the annual filing that reports your income, deductions and credits to the CRA so the final tax for the year can be settled. Payers withhold tax during the year and the return reconciles that against what you actually owe, producing either a refund or a balance to pay. For 2025 returns filed in 2026, refunds usually arrive in about two weeks for an online return, while a paper return runs on a considerably longer standard because it is handled manually.

CRA online filing for 2025 returns opened 23 February 2026 and closes 29 January 2027. Most people file between late February and the 30 April 2026 deadline, and that stretch is what tax season refers to. You can gather documents and prepare a return earlier, but it cannot be sent electronically before the system opens. Employment and investment slips such as T4 and T5 are issued by payers early in the year, and the CRA's Auto-fill service can pull the ones it already holds once you have set up My Account.

As the rules stand for the 2025 tax year filed in 2026, the late-filing penalty is 5% of the balance owing plus 1% of that balance for each full month the return is late, to a maximum of 12 months, so 17% at worst. It rises to 10% plus 2% per month for up to 20 months, a 50% maximum, but only where the CRA formally demanded the return and had already charged a late-filing penalty for any of the three preceding tax years. Interest compounds daily.

Yes. Canada Post charges GST/HST on domestic postage, including stamps, at the rate of the province where you buy them: 13% in Ontario, 5% GST where there is no HST. Postage for mail addressed outside Canada is generally zero-rated, so no GST/HST is charged on it. The tax shows on your receipt rather than in the stamp's face value. Check the CRA's GST/HST rates page for the rate in your province.

Sales taxes such as GST/HST are consumption taxes: the tax is charged on the transaction but the cost falls on the final consumer. Registered businesses collect GST at 5% for 2025 and 2026, or HST where a province has harmonised, and claim input tax credits for the tax they paid on their own purchases, so tax is not stacked at each stage. Businesses act as collectors, not as the ones bearing the tax.

Some are. Unused tuition, disability, age and pension income amounts can be transferred to a spouse, parent or grandparent within limits, and tuition not transferred carries forward for the student indefinitely. Most other non-refundable credits only reduce tax to zero and are then lost, because they cannot be refunded. Donations and student loan interest carry forward for a limited number of later years, and CRA's page for each credit states its transfer and carry-forward rules. Refundable credits are paid even with no tax payable.

An incentive paid to an employee is employment income and is taxed like wages, whether it arrives as a bonus, a sales incentive, a gift card or points with a cash value. The employer reports it on the T4 and withholds income tax and CPP, and EI as well where the incentive is cash or near-cash such as a gift card, while a genuinely non-cash award is taxable and pensionable but not insurable. For a business, an incentive or rebate from a supplier or a government programme is normally taxable, either as income or as a reduction of the cost it relates to.

Bring every slip issued to you for the year, T4, T5 and T3 among them, plus receipts for deductions and credits such as RRSP contributions, medical expenses, donations, child care and tuition. Add last year's return and notice of assessment, any CRA letters, and the authorisation your preparer needs to see your account. If you have self-employment or rental income, bring income and expense totals with the records behind them. Flag any change in marital status, dependants or residency.

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Reviewed and fact-checked by Udit Gupta

Ex Big 4 — Ernst & Young, Deloitte · International & cross-border tax specialist · CPA Canada (In-Depth Tax Program) · Chartered accountant, ICAI & MIA

Udit Gupta has over 15 years of experience helping corporations and business owners with corporate structuring, corporate tax filing, bookkeeping, payroll, GST/HST, cross-border tax and CRA representation. Big 4 trained at Ernst & Young and Deloitte, and qualified as a chartered accountant in India and again in Malaysia, he founded his accounting practice in 2014 to serve entrepreneurs, startups and non-resident business owners across Canada. View full member bio.

The Institute of Chartered Accountants of India — member 521458 · Malaysian Institute of Accountants — member CA 44667 · Ex Big 4: Ernst & Young, Deloitte · CPA Canada (In-Depth Tax Program), completed 19 Dec 2023 · In-Depth GST/HST Part I, 12 Jul 2022 · Part II, 5 Jul 2023

Editorial policy. Every page is researched against primary sources — the Income Tax Act, CRA publications and CPA Canada guidance — and every rate or threshold is stated with the tax year it applies to.