Canada CRA Business Number and GST/HST Account: A Registration Decision Tree

A Canada Revenue Agency (CRA) Business Number (BN) identifies a business, while GST/HST, payroll, import-export and corporation-income-tax accounts represent different program obligations. Determining legal structure and activities before opening an account prevents voluntary-registration consequences you did not intend.

BN vs the program accounts

• A BN alone does not mean you charge GST/HST or run payroll — it is the root identifier.
• GST/HST account relates to charging, collecting and remitting goods and services / harmonized sales tax where turnover and activity make you a registrant or you choose voluntary registration.
• Payroll, import-export and corporation accounts are separate program accounts with their own triggers and filing periods.

Decision tree before you register

1. Is the business a sole proprietorship, partnership or corporation? Incorporation under federal or provincial law is separate from a BN.
2. What activities will you carry on and where? Marketplace sales, interprovincial supplies and imported services can affect GST/HST analysis.
3. Do turnover and activity thresholds make registration required, or is voluntary registration advantageous? Ask CRA or an accountant — voluntary registration can be difficult to unwind.
4. Register only the accounts your facts require and record effective dates, accounting period, filing frequency and remittance calendar in one place.

Invoicing, records and filing hygiene

Where GST/HST applies, invoicing must distinguish taxable, zero-rated and exempt supplies and show the correct registration number. Keep a calendar of filings and remittances, and review when activity changes — for example adding interprovincial sales or digital services.

Provincial and marketplace layers

CRA accounts do not answer provincial sales tax (PST/RST/QST), municipal licensing or Indigenous-tax questions. Marketplace facilitator, drop-shipping and platform-sales rules need specialized review. Record each jurisdiction separately.

Common mistakes

• Assuming a BN equals incorporation.
• Registering for GST/HST voluntarily without advice and then needing to charge on supplies where customers expected no tax.
• Ignoring provincial or territorial rules.
• Assuming a threshold or rate is permanent — they change.

Official source

CRA — Registering your business. Verify turnover, rate and filing-period rules live; this guide is educational.

Frequently asked question

Q: Is a BN the same as incorporation? No. A number identifies CRA program accounts; it does not create a corporation.