Invoice Requirements in Canada: Legal Rules for 2026

TL;DR: Canadian invoices must show GST/HST registration numbers and separate each applicable tax (5% GST, HST, PST, QST) by line, with rates varying by province of supply. Retain records for at least six years and monitor CRA requirements as provincial rules differ significantly.

Canadian invoices must reflect federal GST and, depending on province, HST, PST, or QST. Rates and registration IDs change by place of supply, so a static footer is risky. Remote sellers and marketplaces increasingly need to know when to register in multiple provinces. This article frames 2026 expectations for growing businesses—validate motor vehicles, real property, digital supplies, and First Nations relief with official guidance. It is not a substitute for professional advice.

Required fields

Strong invoices include your legal name and address; Business Number with GST/HST program account when registered; invoice number and date; customer identity (especially for large B2B credit claims); clear supply description; quantity and price; subtotal; each tax shown separately with the correct name and rate (GST, HST, PST, QST) and provincial registration where you collect provincial tax; total payable; and payment terms. Credit and debit notes should reference the original invoice and explain tax adjustments in the same structure as the initial charge. Where you claim input tax credits, buyers may expect your registration to appear exactly as on CRA records. Currency should be explicit for cross-border contracts. Small supplier rules and simplified receipts exist—use CRA tables for thresholds.

Tax rules (VAT/GST/sales tax rates)

Federal GST is 5%. Participating provinces charge HST combining federal and provincial portions (13% in Ontario, 15% in selected Atlantic provinces, etc.). Other provinces layer PST or QST according to local statutes. Alberta has no provincial sales tax on top of GST; British Columbia, Saskatchewan, Manitoba, and others maintain PST regimes with distinct registration and reporting. Quebec operates QST alongside GST with its own administration. Zero-rated exports and basic groceries need correct labelling—not every line is taxed at the headline rate. Place-of-supply rules decide which rate applies to intangible and remote services.

Language requirements

English and French are official; Quebec consumers often require French or bilingual documentation under Charter of the French Language rules for many consumer-facing documents. Nationwide B2B frequently uses English, but consumer protection and provincial rules still matter—mirror your market. Invoices that will be tendered in court or arbitration should match the contract language and keep tax labels aligned with CRA terminology.

Digital invoicing rules

Canada lacks one universal B2B network, yet enterprise and public-sector buyers increasingly prefer structured e-invoices. You must retain readable electronic records supporting GST/HST returns for audit—six years is a common planning horizon unless a longer period applies to your situation. Email PDFs are acceptable if immutable and indexed; avoid overwriting files after issue. Provincial pilots may expand—monitor CRA and provincial finance ministries. Align your chart of accounts tax codes with each invoice line so auditors can reconcile GL postings to supporting PDFs without manual spreadsheets.

Invoice numbering rules

CRA does not prescribe a specific numbering format, but invoices should carry a unique identifier that allows tracing to your records. Sequential numbering is considered best practice for audit readiness -- auditors will look for unexplained gaps or duplicates. You may use alphanumeric prefixes (such as INV-2026-001) or series separated by division or customer segment. Credit notes and adjustments should reference the original invoice number and carry their own identifiers. Businesses using multiple billing systems (for example, one for goods and another for professional services) should ensure numbering does not overlap. There is no legal prohibition on restarting sequences annually, but maintain logs that allow CRA and provincial auditors to reconstruct the full trail for any fiscal year under review.

Common exemptions and special cases

Small suppliers with annual taxable revenues below CAD 30,000 (or CAD 50,000 for public service bodies) are not required to register for GST/HST and do not charge it on invoices. Once you exceed the threshold, registration is mandatory. Simplified invoices or receipts may be used for point-of-sale retail below certain thresholds, but B2B buyers claiming input tax credits (ITCs) generally need a full invoice showing your Business Number. Zero-rated supplies include many exports, basic groceries, prescription drugs, and certain agricultural products -- these must be invoiced at 0% GST/HST but are still reportable on returns. Exempt supplies (such as most financial services, residential rent, and certain health and educational services) sit outside the GST/HST system -- do not show tax on these lines. Provincial variations create complexity: for example, British Columbia PST has its own exemptions (such as for food equipment used in restaurants), Saskatchewan PST exempts certain farm machinery, and Quebec QST follows the GST model but is administered by Revenu Quebec with separate registration and filing. First Nations customers may present tax exemption certificates that relieve GST/HST at the point of sale -- keep copies of these certificates with the invoice for audit purposes.

Record retention requirements

CRA generally requires you to retain all business records, including invoices, for six years from the end of the tax year to which they relate. If you have filed an objection or appeal, retain records until the matter is fully resolved plus the standard period. Records must be kept in Canada unless CRA grants written permission to maintain them elsewhere. Electronic records are acceptable if they are readable, accessible, and stored in a format CRA can inspect -- avoid proprietary formats that require discontinued software. Scanned copies of paper invoices are acceptable if the scanning process preserves accuracy and the images are complete and legible. Provincial authorities (notably Revenu Quebec for QST) may have additional requirements -- check whether your provincial tax filings require separate retention policies. Destroying records before the retention period expires can result in penalties and the loss of your ability to dispute CRA assessments.

E-invoicing status

Canada does not currently mandate structured B2B e-invoicing at the federal or provincial level. Most businesses exchange invoices as PDF attachments via email or through accounting portals. However, the federal government and some provincial governments are increasingly adopting Peppol for procurement and accounts payable, and enterprise buyers in sectors like mining, oil and gas, and financial services frequently require structured data through vendor portals or EDI. CRA has expressed interest in digital tax administration modernisation, and the broader international trend toward mandatory e-invoicing (in the EU, Latin America, and Asia) suggests Canada may follow in coming years. Businesses that invest in machine-readable invoice formats and clean tax code mapping now will be better positioned for any future mandate. Monitor CRA and Finance Canada publications for consultations on digital reporting.

Penalties

Failure to collect or remit GST/HST correctly yields assessments, interest, and penalties. CRA charges compound daily interest on overdue amounts at a rate set quarterly (typically the Bank of Canada prescribed rate plus 4%). Late-filing penalties for GST/HST returns are 1% of the balance owing plus 0.25% per month of delay, up to twelve months. If CRA has assessed a late-filing penalty in any of the previous three years, the penalty doubles to 2% plus 0.5% per month. Gross negligence penalties of 25% of the understated tax can apply when errors are deemed more than merely careless. False invoices or fictitious ITCs attract the most severe treatment, including referral for criminal prosecution under the Excise Tax Act, with penalties of up to 200% of the tax evaded and potential imprisonment. Voluntary disclosure through the VDP programme may reduce penalties and interest when you correct errors proactively before CRA contacts you -- confirm eligibility before filing. Repeated misstated rates on recurring SaaS or subscription invoices can trigger large assessments quickly because volume multiplies small per-invoice errors across billing periods.

FAQ

Which tax do I charge -- GST, HST, or PST? It depends on the place of supply. If you supply goods or services in a participating province (Ontario, New Brunswick, Newfoundland and Labrador, Nova Scotia, Prince Edward Island), you charge HST at the combined rate. In non-participating provinces (Alberta, BC, Saskatchewan, Manitoba), you charge 5% GST and separately charge any applicable PST or RST under that province's rules. In Quebec, you charge 5% GST plus 9.975% QST. The place of supply is determined by where the goods are delivered or where the service is performed, not where your business is located.

Do I need separate registrations for GST and PST? Yes. GST/HST registration is federal (through CRA). PST registration is handled by each provincial authority separately -- for example, BC's Ministry of Finance, Saskatchewan's Ministry of Finance, and Manitoba's Finance department. QST registration is through Revenu Quebec. If you sell into multiple provinces, you may need registrations in each province that levies PST.

What if I sell digital products to Canadian consumers from outside Canada? Non-resident digital service providers and online marketplace operators with Canadian sales exceeding CAD 30,000 over a 12-month period must register for GST/HST under the simplified registration framework and charge GST/HST on sales to non-registered Canadian consumers. You file returns through a simplified online portal and do not claim ITCs under this regime.

Can I issue invoices in USD for Canadian clients? Yes, but the GST/HST amounts must be reported in CAD on your return. Use the Bank of Canada exchange rate on the date of the supply (or another consistent method CRA accepts) and document your conversion approach. The invoice itself may show USD amounts, but keep records of the CAD equivalents for each transaction.

Template link

Use our Canadian invoice template for multi-tax columns. Read the invoice tax compliance guide and tax rate lookup tool. Official sources include the Canada Revenue Agency and GST/HST for businesses. Join InvoiceQuickly early access to standardise cross-province billing.