How to Register a CRA Payroll Account

Opening a CRA payroll account is one of the first compliance steps for any Canadian business hiring employees, and it is also one of the most commonly missed. Business owners busy with the day-to-day of getting a business running sometimes hire their first employees before realising there is a dedicated CRA account required to remit source deductions. By the time the miss is caught, there can be months of back-owed remittances plus penalties. This guide walks through the process in the order you need it.

What a CRA payroll program account is

A CRA payroll program account, technically called an RP account, is the dedicated account the Canada Revenue Agency uses to track source deductions for your business. Every Canadian employer needs one before they make their first payroll. The account is a sub-account under your business number (BN), which CRA uses as the master identifier for your business across all tax programs. Your BN has a nine-digit root, and the RP account adds a four-character suffix: the letters RP followed by a two-digit sequence, usually starting at 0001.

The RP account is separate from your GST/HST account (which ends in RT), your corporate income tax account (RC), or any import account (RM). A business with employees, sales tax obligations, and corporate income tax might have three or four different account suffixes under the same business number. You need the RP specifically for payroll.

The account is what lets you remit federal and provincial income tax withholdings, Canada Pension Plan contributions, and Employment Insurance premiums to CRA on behalf of your employees. Without it, there is no legal mechanism to remit.

When you are legally required to open a CRA payroll account

The rule is straightforward: you must register before you make your first remittance. The first remittance is due by the 15th of the month following the month in which you withheld the first source deductions from employee pay. For a business hiring its first employee on the first Monday of July and running its first payroll that week, the first remittance is due by August 15. Registration needs to happen before August 15, and ideally before the first paycheque goes out.

In practice, CRA recommends registering as soon as you know you will be hiring. Registration takes less than a day when done online. Waiting until you are ready to pay someone leaves no buffer for administrative delays.

A handful of specific triggers always require registration, even if the employment relationship is unusual:

• Hiring your first employee, full-time or part-time.
• Paying yourself a salary from your incorporated business (you are now an employee of your corporation).
• Paying directors fees to corporate directors.
• Hiring a family member who performs arms-length work.
• Hiring a commissioned salesperson who is an employee rather than a contractor.

Contractor payments to people who are legitimately independent contractors do not require a payroll account, but misclassifying someone as a contractor who should be an employee is a separate compliance trap. We covered that risk separately in our employee versus contractor guide.

The exact steps to register a CRA payroll account

There are four ways to register. Choose based on your preference and how quickly you need the account.

Online through Business Registration Online (BRO). This is the fastest method and what we recommend for most new businesses. Go to the CRA website and search for Business Registration Online. Log in with your CRA My Business Account credentials (or sign up if you do not have one). Walk through the BRO flow, select that you need a payroll program account, and enter the required information. You typically receive the RP account number the same day, sometimes within minutes.

Online through CRA My Business Account. If you already have a business number and other accounts set up, you can add a payroll program account from inside My Business Account. Same speed as BRO, slightly different starting screen.

By phone. Call CRA business enquiries at 1-800-959-5525. Have your business number and business details ready. The phone agent can register the account during the call. Expect hold times of 15 to 45 minutes during peak hours. Useful if you do not have CRA online access set up.

By mail using Form RC1. Fill out Form RC1 "Request for a Business Number" and mail it to your CRA tax centre. This is the slowest method and takes four to six weeks. Use it only if you cannot access online or phone registration, which is rare.

Information you need before registering

Have this ready before you start any registration method:

• Your business number (BN). If you do not have one, BRO will create one as part of the same flow.
• Legal business name exactly as registered with your province.
• Business mailing address and physical address.
• Estimated annual payroll for the first 12 months. A reasonable estimate is fine; it only affects your initial remitter type assignment.
• Date of your first payroll (actual or expected).
• Names and SIN or BN of the business's directors and owners (for corporations).
• Primary business activity description.

Having all of this at hand compresses registration from a frustrating back-and-forth into a 10 minute process.

Consequences of failing to register

Running payroll without a CRA payroll account exposes the business to compounding problems.

Unremitted source deductions with interest. Every paycheque you issue generates a source-deduction obligation you cannot pay because there is no account to remit into. Interest accrues on the unpaid amount from the due date.

Failure-to-remit penalties. CRA assesses penalties of 3 to 10 percent on late remittances depending on how late. Without an account, every remittance is functionally infinitely late until registration catches up. The penalty exposure is substantial.

T4 filing problems. Year-end T4 slips require an active payroll account. A business that has paid employees without an account cannot file T4s cleanly, which creates issues for employees trying to file their personal taxes and triggers CRA follow-up.

Director personal liability. For corporations, unremitted source deductions can flow through to director personal liability under the Income Tax Act. This is one of the few business tax exposures that pierces the corporate veil. Directors who allow source-deduction obligations to go unpaid are personally on the hook.

Audit exposure. A business caught paying employees without a payroll account is essentially advertising itself as a compliance risk. CRA is more likely to initiate a broader audit of the business when registration gaps surface. Related reading: our CRA payroll audit guide.

How a specialized payroll partner handles account setup

When a Canadian payroll partner is engaged before a business makes its first hire, account setup is part of the onboarding process. The partner registers the RP account on your behalf, configures remitter type based on your expected payroll volume, and sets up automated remittance so the first (and every subsequent) payment lands on time.

For businesses that come to a payroll partner after already hiring, the partner handles back-registration and the remediation path: opening the account with CRA, calculating the back-owed remittances, filing the owed amounts, and negotiating penalty relief where the circumstances support it. Voluntary disclosure, if applicable, can significantly reduce penalty exposure compared to CRA discovering the issue through audit.

The broader operational benefit is that every downstream payroll function (source deduction calculations, remittance timing, T4 filing, ROE filing) hangs off the payroll account. Getting the account set up correctly from day one prevents a decade of compounding paperwork. See our payroll deductions guide for what source deductions involve once the account is live.

Common mistakes Canadian business owners make

Five mistakes account for most of the problems we see with CRA payroll accounts.

Registering too late. Catching the need to register only after the first paycheque has been issued. The problem compounds fast.

Misreporting estimated payroll. CRA uses the estimate to assign remitter type. Under-estimating can land a larger business in an accelerated remitter tier later, with shorter deadlines and higher penalty risk.

Not updating when the business changes. Moving the business, changing legal name, adding a second location, or hiring in a new province can all require CRA account updates. Missing these creates mismatches at year-end.

Confusing the RP account with other accounts. Remitting payroll source deductions against the wrong sub-account suffix creates accounting issues that can take weeks to unwind with CRA.

Skipping registration for "casual" hires. A seasonal worker paid for two weeks during a busy period is still subject to source deduction rules. There is no casual-payroll exemption in Canadian law.

Next steps

If your Canadian business is about to make a first hire, register the CRA payroll account now, before the first paycheque. It takes minutes and removes a compliance failure mode entirely. If you have already hired without registering, stop the bleeding: register, calculate what is owed, and consider voluntary disclosure before CRA finds the gap on its own.

For the broader PEO and outsourced-payroll context, read our PEO Canada cornerstone guide. To request a free assessment with our Canadian payroll partner, use our contact page. Zero obligation either way.