Opening a business bank account — what you need and why it matters

Opening the corporate bank account is one of the first things to do after incorporating and one of the most commonly deferred, usually because the personal account already works and the paperwork looks tedious. Deferring it is expensive in a way that is invisible at the time: every week the corporation operates through a personal account is a week of transactions that someone will later have to separate, and a week in which the corporation is not behaving like a separate entity.

Why a corporation genuinely needs its own account

The strongest reason is the one owners think about least. Incorporating creates a separate legal person, and limited liability depends on that separation being real in practice rather than only on paper. A corporation whose money lives in its owner’s personal account is not obviously distinct from its owner, and that is the argument you never want to have to answer.

The second reason is practical. Every downstream process assumes a dedicated account. Reconciliation proves the corporation’s cash against the corporation’s statement. The shareholder loan account only means something if there is a boundary for money to cross. Schedule 100 of the T2 reports a cash balance that has to correspond to something. Mixed accounts break all three at once — which is why separating business and personal money is the habit with the largest payoff.

The third is administrative. GST/HST refunds, corporate tax refunds and CRA direct deposit all pay to a business account. Payroll remittances and pre-authorised debits are set up from one. Customers paying a corporation by cheque write it to the corporation, and a cheque made out to a corporation cannot be deposited into a personal account.

What the bank will ask for

Requirements vary between institutions, but the pattern is consistent, because banks are verifying that the entity exists and that the people opening the account are entitled to act for it. Expect to be asked for:

• The incorporation documents — certificate and articles of incorporation, federal or provincial. Have the exact legal name to hand, including any numbered-company form.
• Proof of who controls the corporation — typically the director and officer register and the shareholder register from your minute book, plus a banking resolution authorising who may sign.
• Government photo identification for each signing authority and, under beneficial-ownership rules, information about individuals holding significant ownership.
• The business number issued by the CRA, and often the program account numbers if you already have them.
• A business address and a description of the activity, which the bank uses for its own risk classification.

If the corporation trades under a name different from its legal name, bring the registration for that operating name too — that is what allows the bank to accept cheques payable to it.

Get the business number first

The sequence that saves a second appointment is: incorporate, obtain the business number and the program accounts you need, then open the account. A federally incorporated company usually receives its business number and corporation income tax account as part of incorporation, and several provinces do the same. Which additional accounts you need — payroll, GST/HST, information returns — depends on your activities, and the structure is explained in the guide to business numbers and CRA program accounts.

How to set it up so the bookkeeping works

Open a chequing account and a corporate credit card in the corporation’s name at the same time. The card matters more than it seems: most day-to-day commingling happens on cards rather than through transfers, because the wrong card is easier to reach for than the wrong chequing account.

Open a second savings account at the same institution and use it as the tax and GST/HST reserve. It costs nothing, it takes the money out of the visible operating balance, and it is the mechanism behind almost every business that never has a remittance problem. Then connect the accounts to your bookkeeping software so the feed runs from day one — comparisons of the common Canadian options are in the guide to QuickBooks and Xero in Canada.

Set up CRA direct deposit and pre-authorised debit from the business account while you are in the process, and register for online banking with the same signing authorities you told the bank about. Then reconcile from the first month rather than starting later — the guide to bank reconciliation explains why the first reconciled month is worth more than any later one.

Common mistakes

Using a personal account “just until things pick up” is the most common, and it produces exactly the untangling exercise the account was meant to avoid. Opening a personal account under a business label is another: it is still a personal account, so cheques payable to the corporation may be refused and the separation is cosmetic. Running two operating accounts without a clear rule about which pays what recreates the same ambiguity in a different form. And leaving a former signing authority on the account after they leave the business is an avoidable exposure that nobody notices until it matters.

The bottom line

The corporate bank account is not administrative overhead; it is the physical boundary that makes the corporation real. Open it in the legal name, with the incorporation documents and the business number in hand, add a card and a reserve account at the same time, and route every dollar of business income and expense through it from the first day. Everything downstream — reconciliation, the shareholder loan, the T2, and how a CRA review goes — gets easier because of it.

This article is general information for Canadian business owners and is current as of July 2026. It is not tax, legal or accounting advice, and it does not create a client relationship. Tax rules change and your situation is unique — please speak with a CPA before acting on anything here.