LEI vs Business Number (BN) vs CRA Number: What’s the Difference?

If your organisation is setting up tax accounts, entering capital markets, or dealing with a bank that asks for more entity information, the initials can start to blur together fast. LEI. BN. CRA number. They all identify a business in some way, yet they are not interchangeable.

For Canadian entities, the distinction matters because each identifier serves a different legal and operational purpose. One is built for the global financial system, one is built for Canadian government and tax administration, and one is usually just a practical way of referring to a specific CRA account tied to the Business Number.

LEI, BN, and CRA account numbers in Canada

A quick side by side view makes the differences easier to spot.

The key point is simple: an LEI does not replace a BN, and a BN does not replace an LEI.

A Canadian corporation can have both. In many cases, it should.

What a Legal Entity Identifier is designed to do

An LEI is a global identifier for legal entities involved in financial transactions. It was introduced to make entity identification more consistent across borders and across regulators. If a bank, fund, insurer, listed company, pension plan, or reporting issuer participates in regulated financial activity, the LEI is often part of the operational toolkit.

The format is fixed. An LEI contains 20 alphanumeric characters under the ISO 17442 standard. Behind that code sits reference data that helps answer two basic questions: who the entity is, and who owns whom. That data is published openly through the Global Legal Entity Identifier Foundation, or GLEIF.

This is why the LEI shows up in financial regulation rather than tax administration. Its job is to support clarity in market activity, especially where transactions move across institutions, markets, and countries.

After the 2025 Canadian changes to OTC derivatives data reporting, entities participating in those reporting flows need an active LEI, not a lapsed one. That shift reflects a broader pattern: the LEI is becoming standard infrastructure for regulated finance.

After that context, here are some common situations where an LEI matters:

• Cross-border financial transactions
• Securities issuance and trading
• Bank onboarding for certain corporate activities
• OTC derivatives reporting: Canadian participants may need an active LEI for compliance
• Global counterparty checks: financial institutions use LEIs to identify entities with precision
• Regulatory reporting: the LEI helps connect reports to the correct legal entity across jurisdictions

What a Business Number is used for in Canada

The Business Number, usually called a BN, is a Canadian government identifier centred on tax and program administration. It is issued by the CRA and acts as the core number for a business or legal entity in dealings with federal programs, and often with provincial or municipal systems that connect to the same framework.

The basic BN is nine digits long. On its own, it identifies the entity at the base level. When the entity registers for a specific program, the BN is extended with a two-letter code and a four-digit account suffix. That creates the full account number used for a particular obligation.

A federal corporation will typically receive a BN as part of the incorporation process. Other entities, including partnerships, trusts, charities, and sole proprietors, may receive one when they register for GST/HST, payroll, import-export, or another CRA program.

In practice, the BN is the identifier most Canadian businesses deal with regularly. It appears on tax filings, remittance forms, and government interactions tied to business activity inside Canada.

Common CRA program extensions include:

• RT: GST/HST account
• RP: payroll deductions account
• RC: corporate income tax account
• RM: import-export account
• RR: registered charity account

A BN is not global. It is Canadian. That is its strength, because it is built for domestic administration.

Is a CRA number actually different from a Business Number?

Usually, no.

When people say “CRA number,” they often mean one of two things. They may be referring to the nine-digit Business Number itself, or they may mean a specific CRA program account number built from that BN. So if someone asks for your CRA number, the right response often depends on context.

If the request is tied to GST/HST, payroll, corporate tax, imports, or charity registration, the person is likely asking for the full CRA account number, not just the base BN. A GST account might look like 123456789RT0001. A payroll account might look like 123456789RP0001. Those are not separate identifiers issued from a different system. They are extensions of the same BN.

That small distinction causes a lot of confusion, especially for newer businesses that see several numbers on CRA correspondence and assume each one is a different master identifier.

LEI vs BN: the real difference is scope and purpose

The LEI and the BN overlap only in the broadest sense: both identify an entity. Beyond that, they operate in different systems.

The LEI is built for the financial marketplace. It supports counterparty identification, regulatory reporting, and market transparency. It is international and standardised across borders. A Canadian fund reporting a derivatives position, a corporation accessing global capital markets, or an entity involved in high-value international finance may need one.

The BN is built for public administration in Canada. It supports income tax, GST/HST, payroll, import-export, and related government interactions. A local construction firm, a retailer with staff, or a consulting company charging GST/HST may need a BN long before an LEI is even relevant.

That means the question is rarely “Which one should I choose?” More often, the right question is “Which system am I operating in?”

When a Canadian entity needs an LEI, a BN, or both

A business with only domestic tax obligations usually starts with the BN. If it has employees, collects GST/HST, imports goods, or files corporate tax returns, the CRA framework is the obvious requirement. Many organisations never need anything more.

A business active in regulated finance may need an LEI even if it already has a BN. That includes entities involved in securities transactions, derivatives reporting, investment fund operations, and some cross-border banking or treasury arrangements. A public company or financial institution will often need both identifiers active at the same time.

Charities and non-profits can also fall on either side of the line. A charity may have a BN plus an RR account for CRA purposes, yet still need an LEI if it participates in certain financial transactions or holds investments in a structure where counterparties require it.

A practical way to think about it is this:

• BN only: domestic tax, payroll, GST/HST, import-export, standard government dealings
• LEI only: rare for a Canadian entity operating normally, since most active organisations also have some domestic registration footprint
• Both LEI and BN: funds, banks, public issuers, large corporates, entities with regulated or cross-border financial activity
• CRA account number: needed when a specific tax or program account is involved, not as a replacement for either of the above

Common mix-ups between LEI and CRA identifiers

One common mistake is assuming that an incorporated company automatically has an LEI because it already has a BN. It does not. Incorporation and tax registration do not create a Legal Entity Identifier.

Another is assuming that the CRA number is a third, fully separate identifier. In most cases, it is just shorthand for the BN or one of its attached program accounts.

A third mistake is treating the LEI as a one-time formality. LEIs need renewal to remain active. If a reporting rule, bank process, or trade repository requires an active LEI, a lapsed record can create delays or compliance issues.

That is where many organisations benefit from a managed registration approach rather than a last-minute scramble.

How LEI registration fits into day-to-day compliance

For Canadian entities that do need an LEI, the application process is usually much simpler than the terminology suggests. A registration agent can help confirm the legal entity details, check for existing records to avoid duplicates, submit the application through an accredited issuing structure, and keep reference data current over time.

That matters because LEI value comes from accuracy as much as issuance speed. If legal name, address, or ownership information changes, the LEI record should stay current. Renewals also need to happen on time if the identifier is used in live reporting or trading activity.

Many organisations look for a process with a few clear benefits:

• Fast issuance options
• Duplicate prevention checks
• Renewal reminders or multi-year management
• Phone and email support
• Transfer help if an LEI is already issued elsewhere

For finance teams, legal staff, and operations groups, that kind of support turns the LEI from a niche regulatory task into a straightforward part of entity data management.

Choosing the right identifier for the request in front of you

When a bank, regulator, accountant, or government portal asks for an identifier, the best clue is the context of the request. If the issue involves tax, payroll, GST/HST, imports, or a charity account, it is almost certainly a BN or CRA program account number. If the issue involves trading, regulated reporting, counterparties, or international financial infrastructure, the LEI is much more likely to be the correct answer.

That distinction saves time, prevents rejected filings, and helps teams avoid supplying the wrong number to the wrong system.

For many Canadian organisations, the BN is the operational baseline. For others, especially in capital markets and institutional finance, the LEI is just as essential. Knowing where each one fits is less about terminology and more about using the right identifier for the right regulatory environment.