Do I Need a CRA Business Number to Hire a Caregiver or Nanny?

You’ve found the perfect person to help run your home. Whether you are bringing in a full-time professional to watch the kids or an in-home aide to assist an aging parent, you suddenly realize you might officially be an employer. The very first question most families ask is: Do I actually need a caregiver CRA business number or a nanny CRA business number just to pay for help at home?

Yes. If you hire a caregiver or nanny who is considered an employee rather than an independent contractor, you must complete your domestic employer registration with the Canada Revenue Agency. This business number is legally required so you can remit CPP, EI, and income tax deductions to the government.

Here is exactly how to figure out if your caregiver is an employee, why the CRA requires this registration, and how to get your business number set up quickly.

Employee vs. Independent Contractor: Understanding CRA Domestic Worker Rules

The line between a casual, occasional babysitter and a formal employee can seem blurry, but the CRA is quite strict about the distinction. Many families hope their caregiver is simply an independent contractor to avoid the paperwork, but that is rarely the case.

• The Contractor Test: Does the caregiver bring their own specialized equipment and cleaning supplies? Do they dictate their own hours? Do they work for multiple families through their own registered business? If yes, they might be an independent contractor. In this rare scenario, you would not need a Business Number.
• The Employee Test: Under CRA domestic worker rules, if they use your home’s supplies, follow a set schedule that you provide, and work under your specific direction, the CRA considers them an employee.

The legal reality is that nannies and regular senior caregivers working in your home are almost always classified as employees. If you want to hire a nanny legally, you must treat them as an employee from day one and process their payroll accordingly.

Why You Need a Nanny CRA Business Number

When you hear “Business Number” (BN), you might think you need to incorporate a commercial company. You don’t. For household employers, the CRA uses a Business Number specifically to create a “payroll program account.” This account is used strictly to process your nanny payroll taxes.

As an employer, you are legally required to make three mandatory withholdings from your employee’s pay:

1. CPP (Canada Pension Plan): You must deduct the employee’s portion and match it with your own employer contribution.
2. EI (Employment Insurance): You must deduct the employee’s portion and pay the employer premium (which is 1.4 times the employee’s deduction).
3. Income Tax: You must deduct the appropriate federal and provincial income tax from their gross pay.

Without a caregiver CRA business number, you simply cannot remit these taxes to the government. Failing to remit them not only leads to severe CRA penalties for you, but it also prevents your employee from accessing vital safety nets like Employment Insurance, maternity leave, or their future pension. If you want your nanny or caregiver to be a professional, treat them like a professional.

How to Complete Your Domestic Employer Registration

Getting your business number is entirely free and can usually be done in an afternoon. Here is the step-by-step process:

1. Gather your information: You will need your own Social Insurance Number (SIN) and the basic details of your new employee.
2. Contact the CRA: The fastest way to initiate your domestic employer registration is online. You can register securely through the CRA’s Business Registration Online (BRO) portal.
3. Open a Payroll Program Account: During registration, specifically request a payroll account. Your new Business Number will be a 9-digit number followed by the letters “RP” and four digits (for example: 123456789 RP 0001).
4. Complete the TD1 Forms: Before their very first payday, ensure your nanny or caregiver fills out both their federal and provincial TD1 forms so you know exactly how much income tax to deduct.

The Hidden Cost of DIY Nanny Payroll Taxes

Securing your Business Number is just step one and can easily be accomplished by anyone with internet access. The ongoing math is where most families stumble.

Calculating the correct gross pay from a net hourly rate, figuring out the exact CPP and EI matching amounts, and ensuring you hit the strict 15th-of-the-month remittance deadline under CRA domestic worker rules can easily eat up your Friday nights.

You went through the effort to hire help so you could get your time back—you shouldn’t have to spend that time playing amateur accountant.

Simplify Your Household Payroll

Once your domestic employer registration is complete, RoostPay puts the rest of your household HR on autopilot.

Our app automatically calculates your nanny payroll taxes, creates a work schedule, tracks sick days, handles provincial overtime math, and generates compliant digital pay stubs. We make it easy to hire a nanny legally without the administrative headache.

Ready to take “payroll clerk” off your to-do list? Check out what RoostPay offers and see how we automate CRA compliance for Canadian families.