Business Number

A business number, often shortened to BN, is the core identifier the CRA uses for a business in federal tax and payroll administration.

In payroll context, it matters because employer payroll reporting and remittance must be tied to the right business identity. It is not an employee pay-stub term. It is part of the employer’s payroll setup.

Why Business Number Matters

Business number matters because it affects:

• payroll registration
• the creation of the payroll program account
• remittance and reporting setup
• the employer’s administrative identity in payroll records

Payroll can be calculated correctly and still be operationally incomplete if the employer-side registration structure is wrong.

How It Works In Canada

The business number is the broader CRA identifier. Payroll then sits under that structure through a payroll program account. In practice, payroll staff or bookkeepers may encounter the BN when:

• registering for payroll with the CRA
• setting up payroll software
• confirming which employer account the payroll belongs to
• reconciling remittance or reporting records

It is the foundation of the employer’s CRA payroll identity, not the payroll account by itself.

Example

An employer has a 9-digit business number. Payroll is then connected to that business through a payroll program account, often shown with an RP program identifier and account suffix.

Common Misunderstandings

• Business number is not the same as the payroll program account. The payroll account sits under the BN structure.
• Business number is not an employee identifier. It belongs to the employer side of payroll.
• Business number is not the U.S. EIN. A brief comparison may help, but the Canadian term is the payroll standard here.

Related Terms

• Payroll Program Account
• Remitter Type
• Payroll Remittance
• Source Deductions
• T4 Summary

Knowledge Check

1. Is the business number an employer-side payroll term? Yes.
2. Is the business number the same thing as the payroll program account? No.
3. Does the business number matter to payroll registration and reporting setup? Yes.

Caveat

The core BN concept is stable, but exact registration steps and account-management workflow can vary depending on employer structure and CRA administration details.