GST/HST Guide for Canadian Businesses 2026
The complete GST/HST guide for business owners across Canada — registration, calculating net tax, filing returns, Input Tax Credits, the Quick Method, zero-rated and exempt supplies, compliance timelines and the penalties most commonly issued by CRA.
Registration Rules Filing Your Return1. What Is GST/HST?
The Goods and Services Tax (GST) is a federal consumption tax of 5% imposed on most goods and services supplied in Canada. In five provinces — Ontario, Nova Scotia, New Brunswick, Prince Edward Island and Newfoundland and Labrador — the federal GST is blended with the provincial sales tax into a single Harmonized Sales Tax (HST) collected and administered by the Canada Revenue Agency as a single remittance.
In the remaining provinces and territories, GST applies at 5% through your CRA registration, while the provincial sales tax (PST in BC, Saskatchewan and Manitoba; QST in Quebec; RST in Manitoba) is a separate obligation administered by the respective province. Alberta, the Northwest Territories, Nunavut and Yukon have no provincial sales tax — only the federal 5% GST applies.
GST/HST is a value-added tax. At each stage of the production and distribution chain, a business collects tax on its sales and claims a credit for the tax paid on its purchases. Only the final consumer bears the full economic cost of the tax because they cannot recover it through Input Tax Credits. Registered businesses act as unpaid tax collectors — collecting the tax from customers, offsetting it against the tax they paid on inputs, and remitting the net difference to CRA.
2. How GST/HST Works — The Value-Added System
To understand why registration creates an advantage for businesses, it helps to trace a simple transaction chain from manufacturer to consumer.
| Stage | Supplier | Sale Price | HST Collected (13%) | HST Paid on Inputs | Net HST to CRA |
|---|---|---|---|---|---|
| 1 | Raw material supplier | $1,000 | $130 | $0 | $130 |
| 2 | Manufacturer | $3,000 | $390 | $130 (ITC) | $260 |
| 3 | Retailer | $5,000 | $650 | $390 (ITC) | $260 |
| Final | Consumer (cannot claim ITC) | $5,000 | Bears full $650 | — | — |
Every registered business in the chain collects $650 total — but the net remittance at each stage equals only the value the business added. The consumer ultimately pays the full tax. This structure means that for B2B transactions, HST is tax-neutral — your registered business client recovers whatever HST you charge them. For B2C transactions, HST increases your effective price to consumers who cannot recover it.
3. When to Register for GST/HST
A Canadian business is generally required to register for GST/HST once it crosses the $30,000 small supplier threshold. Below this level, the business is a small supplier and is not required to register, collect or remit GST/HST. However, certain business types must register from the very first dollar of revenue — regardless of the threshold.
Businesses That Must Register Regardless of Revenue
- Taxi operators and rideshare drivers (Uber, Lyft, InDrive) — must register and collect GST/HST on every fare from the first ride
- Non-residents carrying on business in Canada who make taxable supplies to Canadian registrants
- Non-resident digital platform operators, streaming services and SaaS providers supplying to Canadian consumers (post-July 2021 digital economy rules)
- Qualifying charities and public institutions with total revenues over $250,000 annually
- Businesses that sell, lease or import goods commercially across Canadian borders
4. The $30,000 Threshold — Two Tests Explained
The $30,000 registration threshold is one of the most misunderstood rules in Canadian tax. CRA applies two independent tests — a business must register if it fails either one. These tests do not align with your fiscal year. They look at rolling calendar quarters.
Test 1 — Single Quarter Test
If your taxable revenues in any single calendar quarter (January–March, April–June, July–September, October–December) exceed $30,000, you are no longer a small supplier effective the day you crossed the threshold. You must register within 29 days of that date and begin collecting GST/HST on all taxable supplies from that date forward.
Test 2 — Four-Quarter Cumulative Test
If your taxable revenues over four consecutive calendar quarters — which do not need to align with your fiscal year — exceed $30,000 in total, you are required to register. The deadline is the last day of the month following the calendar quarter in which the cumulative $30,000 was exceeded.
The Retroactive Liability Problem: If you crossed the threshold in March but only registered in September, CRA can assess you for HST on all taxable sales made from March onward — even if you never collected it from customers. On $150,000 of Ontario sales over 6 months, the retroactive HST liability would be $17,257 (13 ÷ 113 × $150,000). The tax comes out of your pocket, not your customers'. Register immediately when you cross the threshold.
What Counts Toward the $30,000?
| Revenue Type | Counts Toward $30,000? |
|---|---|
| Taxable supplies (standard-rated goods and services) | Yes — counted in full |
| Zero-rated supplies (exports, basic groceries, prescription drugs) | Yes — counted in full |
| Exempt supplies (residential rent, most healthcare, financial services) | No — not counted |
| Wages, salaries, employment income | No — not a taxable supply |
| Sale of capital assets (buildings, vehicles used in business) | Generally excluded |
| Revenue of associated persons or corporations | Yes — must be aggregated |
The aggregation rule deserves special attention. If you own or control two or more businesses that are associated — through common ownership, related parties or other control tests — their revenues must be combined to determine whether the $30,000 threshold is met. A sole proprietor running two separate businesses has $30,000 shared across both, not $30,000 per business.
5. Voluntary Registration — When It Makes Sense
Any business — even one with zero revenue — can voluntarily register for GST/HST. There is no minimum revenue requirement. Voluntary registration gives you the right to claim Input Tax Credits on all GST/HST-taxable business expenses from your effective registration date (and potentially retroactively).
| Situation | Register Voluntarily? | Reason |
|---|---|---|
| New business with heavy startup costs | Yes — strongly recommended | Recover 5–15% ITC on all setup expenses immediately |
| B2B service business — all clients are registered | Yes — no competitive disadvantage | Clients recover HST you charge; adds professional credibility |
| Exporter with zero-rated sales | Yes — receive regular refunds | Charge 0% but claim full ITCs on all Canadian inputs |
| Freelancer with minimal expenses, individual clients | Consider carefully | Adding HST increases effective price to non-registered consumers |
| Primarily exempt supplies (residential landlord) | Limited benefit | Cannot claim ITCs on exempt-activity expenses regardless |
6. How to Register for GST/HST — Step by Step
GST/HST registration is free and takes 5 to 30 minutes. CRA provides three methods. Online registration through Business Registration Online (BRO) is the fastest and is recommended for most businesses.
Go to CRA Business Registration Online
Visit canada.ca and navigate to Business Registration Online. You can register without an existing CRA My Business Account. Select "Register a new business" or add a GST/HST account to an existing Business Number.
Provide Your Business Information
Legal name, operating name (if different), business structure (corporation, sole proprietor, partnership), business address, primary business activity and — for corporations — your corporation number from your Articles of Incorporation.
Choose Your Effective Date
For mandatory registration: the date you crossed the threshold. For voluntary registration: any date you choose, including retroactively up to 30 days before your application. Earlier effective dates allow ITC claims on pre-registration purchases.
Select Your Reporting Period
Annual (under $1.5M revenue), quarterly ($1.5M–$6M) or monthly (over $6M). You can elect a more frequent period than assigned — useful if you regularly receive net refunds from CRA.
Receive Your GST/HST Number
CRA issues your Business Number (BN) with your RT0001 GST/HST account identifier. For online registration, the number is typically issued the same day or within a few business days. Your complete GST/HST number is 15 characters: 123456789RT0001.
To register by phone, call CRA Business Enquiries at 1-800-959-5525. By mail, use Form RC1 sent to your nearest tax centre — allow 4 to 6 weeks.
7. Provincial GST/HST Rates 2026 — All Provinces and Territories
| Province / Territory | Rate | System | Administered By |
|---|---|---|---|
| Ontario | 13% | HST | CRA |
| Nova Scotia | 15% | HST | CRA |
| New Brunswick | 15% | HST | CRA |
| Prince Edward Island | 15% | HST | CRA |
| Newfoundland and Labrador | 15% | HST | CRA |
| British Columbia | 5% GST + 7% PST | GST + PST | CRA (GST) + BC Ministry of Finance (PST) |
| Alberta | 5% GST only | GST only | CRA |
| Saskatchewan | 5% GST + 6% PST | GST + PST | CRA (GST) + Sask. Ministry of Finance (PST) |
| Manitoba | 5% GST + 7% RST | GST + RST | CRA (GST) + Manitoba Finance (RST) |
| Quebec | 5% GST + 9.975% QST | GST + QST | CRA (GST) + Revenu Québec (QST) |
| Northwest Territories | 5% GST only | GST only | CRA |
| Nunavut | 5% GST only | GST only | CRA |
| Yukon | 5% GST only | GST only | CRA |
Non-HST Provinces Require Two Registrations: If you operate in BC, Saskatchewan, Manitoba or Quebec, you need a separate provincial sales tax registration in addition to your CRA GST registration. Each province has its own rules, thresholds and registration process. Quebec's QST is administered by Revenu Québec — not CRA — and has its own return filing schedule. Alberta has no provincial sales tax at all.
8. Place of Supply Rules
When you make a taxable supply across provincial lines, the rate that applies depends on where the supply is made — not where you, the supplier, are located. These Place of Supply rules determine whether you charge the GST rate (5%) or the destination province's HST rate.
| Supply Type | Place of Supply | Practical Example |
|---|---|---|
| Goods (tangible personal property) | Province where goods are delivered | Ontario retailer ships to BC customer — charge 5% GST |
| Services performed at a specific location | Province where service is physically performed | Ontario plumber works at a Nova Scotia property — charge 15% HST |
| Services with no specific location | Province where the recipient is located | Ontario consultant advises a New Brunswick company — charge 15% HST |
| Real property | Province where the property is situated | Sale of BC property — BC GST rules apply |
| Digital services to consumers | Province where the consumer ordinarily resides | SaaS sold to Alberta consumer — charge 5% GST |
9. Collecting GST/HST — Invoice Requirements
Once registered, every taxable supply you make must include GST/HST at the applicable rate. CRA has specific invoice content requirements — your clients need these details to claim their ITCs. The requirements scale with the invoice amount.
| Invoice Amount | Required Information |
|---|---|
| Under $30 | No specific documentation required — a receipt showing total amount charged is sufficient |
| $30 to $149.99 | Supplier name, invoice date, total amount, indication that GST/HST is included (or amount shown separately) |
| $150 to $999.99 | All above plus: supplier's GST/HST registration number, a description of goods or services, the GST/HST rate applied |
| $1,000 or more | All above plus: purchaser's name or operating name; this is required for the purchaser to claim their ITC |
10. Input Tax Credits (ITCs) — Recovering What You Paid
An Input Tax Credit is the GST/HST you paid on business purchases that you are entitled to recover from CRA. ITCs are the core benefit of being registered — they effectively make business expenses tax-free by recovering the consumption tax component on each return.
General ITC Rules
- You may claim an ITC for any GST/HST paid on goods or services acquired for use in your commercial activities
- You need a valid supplier invoice showing their GST/HST number to support the claim
- ITCs must be claimed within four years of the due date of the return for the reporting period in which they arose (two years for certain large businesses)
- ITCs on capital property must be claimed in the period the property was acquired, not when it is put in use
ITC Restrictions — What You Cannot Claim in Full
| Expense | ITC Available | Rule |
|---|---|---|
| Meals and entertainment | 50% only | ITC is restricted to 50% of the GST/HST paid — mirrors the income tax 50% rule |
| Passenger vehicle — capital cost | Limited | ITC on purchase price limited to the Class 10.1 threshold ($37,000 in 2026 + HST) |
| Employee allowances | Deemed ITC | Flat-rate deemed ITC available for reasonable per-kilometre allowances to employees |
| Personal-use portion of mixed property | Business % only | Only the business-use percentage of shared property generates an ITC |
| Exempt-activity expenses | None | No ITCs on inputs used exclusively to make exempt supplies |
| Employee wages and benefits (most) | None | Wages are not a taxable supply — no GST/HST is paid, no ITC available |
11. Calculating Net Tax
Your net tax for a reporting period is simply the difference between the GST/HST you collected on your taxable supplies and the ITCs you are entitled to claim for that period.
Net Tax Formula
Net Tax = GST/HST Collected on Taxable Supplies − Input Tax Credits (ITCs)
If net tax is positive: you owe that amount to CRA — remit it by your filing due date.
If net tax is negative: CRA owes you a refund — claim it on your return and CRA will issue a refund within 21 days (direct deposit) or 30 days (cheque) for timely-filed returns.
Example — Ontario Business, Quarterly Filer:
- HST collected on sales: $6,500
- HST paid on office rent: $650
- HST paid on equipment: $2,340
- HST paid on advertising: $390
- Total ITCs: $3,380
- Net Tax Owing: $6,500 − $3,380 = $3,120
12. Filing Your GST/HST Return
Every registered business must file a GST/HST return for every reporting period — even if no transactions occurred and no tax is owing. Filing a nil return for a period with no activity is still required. Failure to file on time attracts a penalty regardless of whether any tax is owing.
How to File
Most businesses are required to file online. CRA accepts GST/HST returns through:
- My Business Account — CRA's online business portal — direct filing with instant confirmation
- GST/HST NETFILE — web-based filing without login credentials
- Third-party accounting software — QuickBooks Online, Xero and most accounting platforms support direct CRA filing through their GST/HST module
- Your CPA or authorized representative — can file on your behalf with a signed T1013 or online authorization
- Paper returns — only available for businesses with less than $1.5M in annual taxable revenues who have not been instructed to file electronically
What to Include on Your Return
- Total sales and other revenues for the period (including exempt and zero-rated)
- Taxable sales (excluding zero-rated exports)
- Zero-rated exports separately
- Total GST/HST collected and collectible
- Total eligible ITCs claimed
- Any adjustments (rebates, bad debt relief, changes in use)
- Net tax owing or refund claimed
13. Filing Frequency — Annual, Quarterly or Monthly
CRA assigns a default reporting period based on your annual taxable revenues. You can elect to file more frequently than your assigned period but cannot file less frequently without CRA approval. More frequent filing is beneficial when you regularly receive net refunds — because you receive your ITC refunds faster.
| Annual Taxable Revenue | Assigned Frequency | Return and Payment Due | Can Elect More Often? |
|---|---|---|---|
| Under $1,500,000 | Annual | 3 months after fiscal year-end | Yes — quarterly or monthly |
| $1,500,001 to $6,000,000 | Quarterly | 1 month after each quarter-end | Yes — monthly |
| Over $6,000,000 | Monthly | 1 month after each month-end | Already most frequent |
14. Instalments for Annual Filers
If you are an annual filer and your net tax in the immediately preceding fiscal year was $3,000 or more, CRA requires you to make quarterly instalment payments during the current year. Each instalment is generally one-quarter of the lesser of your prior year net tax or your estimated current year net tax. Instalments are due one month after each calendar quarter.
Instalment Due Dates for Calendar Year-End Businesses: April 30 (Q1), July 31 (Q2), October 31 (Q3), and January 31 of the following year (Q4). Missing an instalment does not trigger a separate late penalty — but CRA charges interest on any shortfall at the prescribed rate (7% in 2026) from the instalment due date to the date payment is actually received.
15. The Quick Method of Accounting
The Quick Method is an alternative calculation approach for eligible small businesses that simplifies GST/HST administration. Instead of tracking every individual ITC, you remit a fixed percentage of your HST-inclusive revenues — with the rate set below the statutory rate to approximate an average ITC offset for typical business expenses.
Eligibility Requirements
- Annual taxable revenues (including HST) must be under $400,000 for the previous year and the current year
- You cannot use the Quick Method if you are a financial institution, a charity or public institution with over $250,000 in revenues, or certain other excluded categories
- You must have been registered for at least one year before electing the Quick Method
- The election must be filed with CRA before the start of the first reporting period to which it applies
Quick Method Remittance Rates 2026 (Ontario, 13% HST)
| Business Type | Quick Method Rate | HST Collected Rate | Effective Retention |
|---|---|---|---|
| Service businesses (no significant goods sold) | 8.8% of HST-inclusive revenue | 13% collected from customers | ~3.7% of HST-inclusive revenue retained |
| Businesses that sell goods | 1.8% of HST-inclusive revenue | 13% collected from customers | ~9.8% of HST-inclusive revenue retained |
Quick Method Planning Tip: The Quick Method is not always more beneficial than the regular method. A service business with significant input costs — equipment, software subscriptions, professional services, office rent — may recover more through actual ITC claims than the 8.8% Quick Method provides. Model both approaches with your accountant before electing. You can switch back to the regular method at the start of any subsequent fiscal year.
16. Zero-Rated vs. Exempt Supplies
Both zero-rated and exempt supplies result in zero GST/HST being charged to the customer — but they have fundamentally different consequences for your business. This distinction is one of the most important concepts in GST/HST and one of the most frequently confused.
| Category | Tax Charged | ITCs on Related Expenses | Counts Toward $30K Threshold |
|---|---|---|---|
| Zero-rated (taxable at 0%) | 0% | Yes — full ITCs claimable | Yes — counts in full |
| Exempt | 0% | No — no ITCs on exempt-activity costs | No — does not count |
Common Zero-Rated Supplies
- Exports of goods shipped to a destination outside Canada
- Services rendered entirely outside Canada to non-resident clients
- Most basic groceries (unprocessed, non-restaurant food items)
- Prescription drugs, most medical devices and certain medical supplies
- International transportation services and related services
- Feminine hygiene products
- Most agricultural products for use as animal feed or crop production
Common Exempt Supplies
- Long-term residential rent (one month or more)
- Most healthcare services — physician, dentist, physiotherapy, optometry
- Most educational tuition and student fees at recognised institutions
- Most financial services — lending, deposit-taking, life insurance, investment management fees
- Childcare and daycare services
- Legal aid services provided by qualifying legal aid clinics
17. Partial Use and Mixed-Use Properties
When you acquire a property or service for use partly in commercial activities and partly for personal use or exempt activities, the ITC available is restricted to the commercial-use percentage. CRA requires you to determine a reasonable apportionment method and apply it consistently.
Common examples include a vehicle used for both business and personal driving (ITC based on business-use percentage established by a mileage logbook), a home office (ITC based on the proportion of home square footage used exclusively for business), and a building used for both commercial rental and personal use.
If the primary use of a property changes, you may be required to make adjustments — either claiming additional ITCs (if you convert personal property to commercial use) or repaying ITCs (if you convert commercial property to personal or exempt use). These change-in-use rules apply to capital property and are triggered by a change in the proportional use.
18. Non-Residents and Digital Economy Rules
Since July 1, 2021, Canada has significantly expanded GST/HST obligations for non-resident businesses. Three new registration categories were introduced under the digital economy provisions.
Simplified GST/HST Registration — Non-Resident Suppliers
Non-resident businesses that supply digital products and services (streaming, apps, SaaS, digital media, online gaming) to Canadian consumers — who cannot self-assess — must register for GST/HST and collect and remit tax at the applicable rate for the consumer's province of residence. The simplified registration allows non-residents to register without a permanent establishment in Canada but restricts them from claiming ITCs through that account.
Platform Economy Rules
Online accommodation platforms (Airbnb, VRBO) and digital goods platforms are responsible for collecting and remitting GST/HST on supplies made through their platform by non-registered Canadian suppliers. The platform is deemed the supplier for GST/HST purposes on short-term accommodations and certain digital goods sold through their marketplace.
19. Adjustments, Credits and Rebates
Bad Debt Adjustments
If you have already remitted GST/HST on a supply and subsequently write off the receivable as a bad debt, you are entitled to claim an adjustment on your next return to recover the GST/HST remitted on the uncollected amount. The adjustment is calculated as the GST/HST fraction (13/113 for Ontario) of the amount written off. You must have previously included the amount in your taxable sales and remitted the corresponding tax.
New Housing Rebate
Builders of new residential housing may be entitled to apply a New Housing Rebate on behalf of eligible purchasers. Purchasers of newly constructed homes used as their primary place of residence may be eligible for a rebate of a portion of the federal GST or federal component of HST paid — reducing the effective tax on new residential construction. The rebate phases out for homes priced above $450,000 for the federal component.
Public Service Body Rebates
Charities, municipalities, qualifying non-profit organisations, public hospitals, school authorities, universities and public colleges may be eligible for partial rebates of GST/HST paid on their inputs — even when those inputs are used to make exempt supplies for which no ITC is otherwise available. Rebate percentages range from 50% (charities and qualifying non-profits) to 83% (public service bodies with designated classifications).
20. Penalties and Interest
| Compliance Issue | Penalty | Interest Rate (2026) |
|---|---|---|
| Late filing — return filed after due date | 1% of net tax owing + 0.25% per complete month late (max 12 months) | 7% daily compound on unpaid tax |
| Failure to register when required | Liability for all GST/HST collectible from mandatory registration date — even if not collected | 7% on unpaid amounts |
| Gross negligence or intentional non-compliance | 25% of the net tax that was understated or overclaimed — minimum $250 | 7% compound + penalty interest |
| False statement or omission | Greater of $250 or 25% of the tax advantage sought | 7% compound |
| Failure to provide information or records | $100 per failure — $1,000 maximum per calendar year | N/A |
| Repeated failure to report income — two returns within 4 years | 10% of the amount not reported on the second and subsequent occasions | 7% compound |
Director Liability for GST/HST: Directors of a corporation can be held personally liable for a corporation's unremitted GST/HST — in the same way as for unremitted payroll source deductions. Personal liability can be assessed for two years after a person ceases to be a director. The only defence is due diligence — demonstrating that you exercised the degree of care, diligence and skill to prevent the failure that a reasonably prudent person would have exercised in comparable circumstances. The threshold is high.
21. GST/HST Audits — What Triggers Them
CRA selects GST/HST returns for audit through both risk-scoring algorithms and targeted compliance campaigns. Understanding the common triggers allows businesses to maintain records that withstand scrutiny without disrupting operations.
Common GST/HST Audit Triggers
- Large or unusual ITC claims — particularly large capital acquisitions or ITCs that are disproportionate to revenues in the same period
- Consistent refund position — businesses that receive refunds every period attract attention — particularly if the refund position is not consistent with an export or startup profile
- Revenue inconsistencies — GST/HST-reported revenues that do not align with income tax-reported revenues for the same period
- Industry-specific campaigns — CRA runs compliance campaigns targeting sectors with known compliance issues — construction, restaurant, trucking and other cash-intensive industries
- Missing or late returns — businesses with a history of late or missing returns are scored as higher risk
- New registrants with large immediate refunds — particularly where the refund is disproportionate to the stated business activity
- Third-party information matching — CRA receives information from financial institutions, T5018 filers, import/export records and other sources that it matches against GST/HST returns
How to Prepare for a GST/HST Audit
The best preparation for a GST/HST audit is having organised, well-maintained records from the start. CRA auditors examine sales records, purchase invoices, bank statements, payroll records and general ledger entries. For every ITC claimed, you should have the original supplier invoice showing their GST/HST registration number, the amount of HST paid, and a description of the supply. Bank statements reconciled monthly to your accounting records are the foundation of any successful audit response.
22. Most Common GST/HST Mistakes
Spending Collected HST as Revenue
Many new business owners treat collected HST as part of their income and spend it before their return is due. When the return is filed, there is no cash to pay the liability.
Missing the $30,000 Threshold Deadline
Failing to register within 29 days of crossing the single-quarter threshold creates retroactive liability for all tax on sales from the threshold date — whether collected or not.
Claiming ITCs Without Valid Invoices
CRA auditors disallow ITC claims when the underlying supplier invoice does not show the supplier's GST/HST number, when the invoice is missing, or when the payment cannot be traced to a bank record.
Applying the Wrong Provincial Rate
Charging Ontario's 13% HST to an Alberta client (who should be charged 5% GST) results in overcollection — which must be remitted in full. Charging 5% to an Ontario client undercollects and creates a shortfall liability.
Not Filing Nil Returns
A nil return is still required for every reporting period, even if there were no transactions and no tax is owing. Failing to file a nil return triggers a late filing penalty starting at $250.
Claiming 100% ITC on Meals and Vehicles
The ITC on meals and entertainment is restricted to 50% — mirroring the income tax deductibility rule. ITCs on passenger vehicles are also restricted to the cost cap threshold. Claiming 100% is an automatic audit finding.
Need Help with GST/HST Registration or Filing?
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