For most new Canadian business number and CRA program-account registrations, the current first step is Business Registration Online (BRO). Before you apply, check whether your business already has a business number (BN), separate your CRA registration from any provincial business registration, and decide which program accounts actually apply to your activities.
The process is manageable when you treat it as a sequence of decisions rather than one general application. The guide below explains what to prepare, how to avoid a duplicate BN, which accounts may be relevant, and what to do after registration.
Quick summary
- Check business records and CRA correspondence for an existing nine-digit BN before starting a new application.
- Prepare consistent legal, operating, ownership, contact, activity, and start-date information.
- Use Business Registration Online for the current primary registration route.
- Select only the CRA program accounts that match your situation. A BN does not automatically mean every account is required.
- Save confirmation details and set up an organized process for CRA access and ongoing records.
Before you start: separate the BN from business registration
A CRA business number is a nine-digit identifier used with CRA program accounts and related business services. It is not the same thing as choosing a sole proprietorship, partnership, or corporation, and it is not automatically the same as a provincial business registration identifier. The CRA explains the BN as part of its federal business-account system.
In Ontario, take particular care not to confuse a CRA BN with the province’s separate business registration number or BIN. You may need to address both business structure or name registration and CRA account registration, but they are related steps rather than one interchangeable process.
Before opening the CRA application, clarify your structure and name decisions. This helps keep the information on your provincial, banking, and CRA records consistent.
Step 1: Check whether your business already has a BN
Do not assume that a new application is necessary. Look through CRA letters, prior registration confirmations, corporate records, tax documents, and accounting files. A BN may already exist if you previously registered with the CRA, incorporated federally, registered or incorporated through certain provincial processes, or began a BRO application that later timed out.
The CRA states that an existing BN is needed when adding CRA program accounts through BRO. If you find one, use that number rather than creating a second BN for the same business. If you are unsure whether a number belongs to the business or which accounts are attached to it, verify the information before continuing.
Step 2: Prepare the information BRO may require
Gather the information before opening the application. Exact requirements can vary with your business type, residency, ownership, and selected accounts, so use the CRA’s current instructions to confirm what applies. A practical preparation list includes:
- Legal business information: the legal name and, where applicable, the operating or registered business name.
- Contact details: the business address, mailing address if different, telephone number, and email address.
- Ownership and structure: whether the business is a sole proprietorship, partnership, corporation, or another arrangement, along with the relevant owner or director information.
- Business activity: a clear description of what the business does and how it earns revenue.
- Start date: the date the business began, or the relevant date for the activity or account being opened.
- Account decisions: a list of the CRA program accounts you may need, such as GST/HST, payroll, or corporate income tax.
Keep the spelling, addresses, and dates consistent across your incorporation or business-name documents, bank records, contracts, and CRA application. If a detail is uncertain, record the question instead of guessing. A small inconsistency can create follow-up work later.
Step 3: Decide which CRA program accounts apply
A BN is the identifier. Program accounts describe specific CRA responsibilities attached to that identifier. Your business may need one or more accounts, but obtaining a BN does not mean that every business automatically needs GST/HST, payroll, or corporate income tax accounts.
| Item | What it is for | Decision to make |
|---|---|---|
| CRA business number | A nine-digit identifier used with CRA program accounts and related business services. | Check whether the business already has one before applying. |
| GST/HST account | Used when the business has a GST/HST registration obligation or otherwise needs to register for the account. | Confirm whether your taxable activities and circumstances require or justify registration. |
| Payroll account | Used for employer payroll responsibilities, including deductions and remittances. | Consider it before paying employees or otherwise becoming an employer. |
| Corporate income tax account | Associated with corporate income tax administration for a corporation. | Confirm the account requirements for the corporation and its tax situation. |
Do not rely on a general assumption about what every new business needs. Residency, legal structure, taxable activities, hiring plans, and the timing of operations can change the answer. Verma Accounting provides support with CRA business number registration, GST/HST account setup, and payroll account setup when you want help reviewing these choices.
Step 4: Complete the registration through Business Registration Online
For a Canadian resident with a Canadian business, the CRA identifies online registration as the fastest and easiest route for obtaining a BN and certain CRA program accounts. Since November 3, 2025, new BN and CRA program-account registrations have moved to the online process rather than phone-based registration.
- Open the CRA’s Business Registration Online service. Use the current CRA registration instructions and select the path that matches your business and residency.
- Enter the business details. Provide the legal, contact, ownership, activity, and start-date information you prepared. Review names and numbers carefully.
- Identify any existing BN. If the business already has one, use it when the application asks for the existing identifier rather than creating a duplicate.
- Select applicable program accounts. Add only the accounts that fit your business. If the situation is unclear, pause and verify the requirement before submitting.
- Review the complete submission. Check the legal name, address, contact information, structure, and account selections before finalizing the registration.
- Save the confirmation. Download or securely store the BN, account numbers, confirmation pages, submission details, and any correspondence in a dedicated business records folder.
Business Registration Online is administered by the CRA. An accountant or other professional can help you prepare information and think through account decisions, but the registration itself remains a CRA process. The CRA’s online registration guidance explains the available route and the information needed for registration.
If online registration cannot be completed: understand the RC1 fallback
Form RC1 remains available when online registration cannot be completed. It is a fallback, not the standard first choice under the current process. The form can be used to request a BN and certain CRA program accounts, including GST/HST, payroll, and corporate income tax accounts where applicable.
Use the current CRA instructions to determine what to submit and where to send it. Do not assume that using RC1 changes the underlying account requirements or guarantees a particular processing time. Keep a copy of the completed form and any delivery or confirmation records with your business documents.
After registration: save, access, and maintain your CRA information
Registration is not the end of the setup. Create a short post-registration workflow so the BN and related accounts remain easy to find and the business can manage its CRA information securely.
- Store the confirmation: keep the BN, program-account numbers, confirmation dates, and supporting documents together.
- Check CRA online access: link the business information to the appropriate CRA online services where applicable so you can view and manage account information.
- Review authorization: decide whether an accountant or another representative should be authorized, and understand what access they will receive before approving it.
- Set calendar reminders: record the account-specific filing, remittance, and information-return obligations that apply to your business after confirming them with CRA guidance.
- Maintain source records: organize invoices, receipts, bank statements, payroll records, contracts, and CRA correspondence in a secure, searchable system.
Once the BN is active, use a CRA compliance checklist to organize source document capture, retention and access, reconciliations, payroll records, and review responsibilities. A repeatable recordkeeping process makes future filings and questions easier to manage.
Should you complete the setup yourself or get accounting support?
Do-it-yourself registration may be reasonable when your structure is straightforward, your business details are clear, and you understand which CRA accounts may apply. You should still use current CRA instructions and keep copies of everything submitted.
Professional support may be useful when you are choosing between structures, formalizing an Ontario business, starting payroll, assessing GST/HST registration, registering a corporation, or trying to organize several accounts at once. Support is also practical when an existing BN is difficult to locate or the information in your records does not agree.
Verma Accounting & Financial Services supports individuals, freelancers, entrepreneurs, small businesses, and corporations across Ontario and Canada with business registration, bookkeeping, payroll, tax, and related compliance services. Its stated process begins with a consultation, followed by setup and review and then ongoing support where needed.
Frequently asked questions
Not necessarily. The need for a BN depends on the business’s circumstances and the CRA program accounts or services involved. A sole proprietor should check whether a BN already exists and confirm the registration requirement for the specific activities and accounts before applying.
No. A BN is the identifier used with CRA program accounts, but GST/HST and payroll accounts are separate account decisions. Add them only when they apply to the business. For example, hiring plans may raise payroll-account questions, while taxable activities and the business’s circumstances may affect GST/HST registration.
In many cases, an existing BN should be used when adding program accounts rather than creating a duplicate. First confirm that the number belongs to the same business and check the CRA records or correspondence associated with it. The CRA provides guidance for finding an existing BN.
Review the CRA’s current instructions to identify the reason the online process could not be completed. Form RC1 remains a fallback for situations where online registration cannot be completed. Keep copies of the form and any related records, and confirm the appropriate submission instructions with the CRA.
No. A CRA BN belongs to the federal CRA business-account system. Ontario may have a separate business registration identifier or BIN connected with provincial registration. Treat the provincial and CRA steps as distinct and keep both sets of records organized.
Conclusion: complete the right registration once and keep the records
The safest CRA BN setup path is to confirm your business structure and name, check for an existing BN, prepare accurate details, and use Business Registration Online for the current primary registration route. Then select only the CRA program accounts that fit your situation, save the confirmations, and establish a process for online access and ongoing recordkeeping.
If the structure, GST/HST, payroll, or corporate-account decisions are unclear, getting help before submitting can prevent avoidable rework. For business registration support and related accounting services across Ontario and Canada, contact Verma Accounting & Financial Services.
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