RC Account vs Business Number: What's The Difference?

Corporation Income Tax Account (RC) is the CRA program account used for Canadian corporation income-tax administration. It is a program-specific account that sits under a business's broader federal Business Number (BN); understanding the difference between the BN and an RC account is essential for correct tax administration and payments.

The Business Number is the nine-digit federal identifier the CRA issues to a business or legal entity. Program accounts — such as the RC for corporate income tax, the RP for payroll, and the RT for GST/HST — are appended to the BN to create program-specific identifiers. For example, a company with BN 123456789 will typically have its corporation income tax account shown as 123456789RC0001. The BN identifies the legal entity; the RC identifies the corporation income tax account used for that entity.

Key Differences

• Scope: The BN identifies the legal entity as a whole. The RC account identifies the corporation income tax account for that entity.
• Function: BN is a shared identifier used by multiple CRA programs. RC is used specifically for T2 filing and corporate tax administration.
• Multiplicity: A BN can have multiple program accounts (multiple RCs, RPs, RTs) if the business requires separate accounts; each program account has its own four-digit suffix.

Why The Distinction Matters Operationally

Confusing the BN and RC can cause misdirected payments or filings. For example, sending a payroll remittance and referencing the BN without the RP program identifier may still be processed, but corporate tax remittances must reference the RC program identifier to ensure they apply to corporate tax liability. When setting up automated payments, ERP or banking templates must include the full program account reference to avoid manual reconciliation tasks.

How To Read The Full Identifier

Read the full CRA program account identifier from left to right: the nine‑digit BN, followed by the two-letter program identifier, followed by the four-digit account number (suffix). Example:

• BN: 123456789
• Program: RC
• Suffix: 0001

When You Need Separate RC Accounts

Some organizations operate multiple corporate legal entities (subsidiaries) or have divisions that require separate corporate registration. Each incorporated legal entity receives its own BN and therefore its own RC accounts. In certain cases one BN can host multiple account suffixes for administrative reasons, but typically each incorporated entity has a distinct BN and RC account.

Practical Checklist For Finance And Operations

• Confirm identifiers: Before filing or paying, confirm the exact BN + program identifier + suffix for the specific legal entity.
• Template accuracy: Update ERP and bank templates to include the full RC identifier; don’t rely on the BN alone.
• Record-keeping: Maintain a registry of BNs and RC accounts for each legal entity you manage or represent.
• Closing accounts: When winding down or restructuring, follow CRA procedures to close or transfer RC accounts to prevent future notices being sent to an inactive account.

In short, the Corporation Income Tax Account (RC) is the CRA program account used for Canadian corporation income-tax administration and is always linked to a Business Number. The BN identifies the legal entity; the RC specifies the corporate tax account for that entity — both are required to ensure filings and payments are applied correctly.