A new consulting engagement can look straightforward: agree on a rate, complete the work, send an invoice. Then the client asks, “Do consultants charge GST?” The answer depends primarily on the consultant’s GST/HST registration status, the type of service provided, and where the client is located.
For many independent consultants, GST/HST is not an optional line item to add whenever it feels appropriate. It is a tax that must be charged once registration is required, and it comes with filing, recordkeeping, and remittance responsibilities. Getting it right protects your cash flow, keeps invoices professional, and helps avoid unpleasant CRA assessments later.
Do Consultants Charge GST in Canada?
Consultants generally charge GST/HST when they are registered for GST/HST and provide taxable consulting services in Canada. Management consulting, marketing, technology, human resources, financial advisory, design, training, and many other professional services are typically taxable supplies.
If you are registered, you charge the applicable GST/HST rate on your consulting fee and, in most cases, on reimbursed expenses billed to the client. You collect that tax on behalf of the government, then remit the net amount after claiming eligible input tax credits for GST/HST paid on business purchases.
If you are not registered because you qualify as a small supplier, you generally do not charge GST/HST. You also cannot claim input tax credits. This distinction matters: charging tax without a registration number is not a shortcut, and failing to charge tax after mandatory registration can leave you responsible for paying it out of your own revenue.
The $30,000 Small Supplier Threshold
Most self-employed consultants are not required to register for GST/HST until their worldwide taxable revenues exceed $30,000. This threshold is based on revenue before expenses, not profit. A consultant with $45,000 in billings and $30,000 in expenses has still exceeded the threshold.
The CRA considers taxable revenues from all of your business activities, not just one consulting contract. For example, a consultant who also sells templates, delivers paid workshops, or earns revenue through a separate sole proprietorship should consider those taxable sales as part of the calculation.
The $30,000 test is measured in two ways:
- If your taxable revenues exceed $30,000 in a single calendar quarter, you must register immediately when you make the sale that pushes you over the limit.
- If your taxable revenues exceed $30,000 over four consecutive calendar quarters, you generally must register by the end of the month following the quarter in which you exceeded the threshold.
The timing can be easy to miss when revenue is growing quickly. A consultant may have several months of invoices still outstanding, receive a large project deposit, or add a recurring client. Regularly tracking billings helps you identify when registration is approaching rather than discovering the issue after year-end.
Should a Consultant Register Voluntarily?
Some consultants choose to register before reaching $30,000 in taxable revenue. Voluntary registration can make sense when you work mainly with GST/HST-registered business clients. Those clients can often claim an input tax credit for the tax they pay, so GST/HST may not be a meaningful added cost to them.
Voluntary registration also allows you to claim input tax credits on eligible business expenses. A consultant who purchases equipment, software subscriptions, office supplies, professional insurance, advertising, or other taxable business inputs may recover some of the GST/HST paid on those costs.
There is a trade-off. Once registered, you must charge GST/HST, file returns on time, maintain supporting records, and remit the tax you collect. If your clients are consumers, small suppliers, or organizations that cannot recover GST/HST, adding tax to your invoice can affect pricing and purchasing decisions. Registration should support your business model, not simply add administrative work.
Which Rate Should You Charge?
Canada uses GST in some provinces and HST in others. The rate is generally determined by the place-of-supply rules for services, which often depend on the client’s address and the facts of the engagement.
A consultant based in Alberta, for example, may charge 5% GST to an Alberta client. A service supplied to a client in Ontario may be subject to 13% HST, while a client in a province with a different HST rate may require that province’s rate. The consultant’s own location does not always determine the rate.
This is particularly relevant for remote consulting. A Calgary-based advisor working by video with clients across Canada cannot assume that every invoice carries Alberta’s 5% GST. Review the client’s usual business address, the agreement, and the specific service being provided. Some services have special place-of-supply rules, and services provided to non-resident clients may have different treatment.
Quebec creates an additional consideration. Depending on your activities and registration requirements, Quebec Sales Tax may also apply. When a project involves multiple provinces, international clients, or an unusual service arrangement, it is worth confirming the tax treatment before invoicing.
What a GST/HST Invoice Should Show
Clear invoicing reduces questions from clients and gives you the documentation needed for CRA compliance. A GST/HST invoice should identify your business, show the invoice date, describe the consulting services, and state the amount charged before tax.
It should also show the applicable GST/HST rate, the tax amount, the total amount due, and your GST/HST registration number. If you bill expenses to a client, distinguish between your consulting fee and the reimbursed expenses so the invoice clearly shows what tax has been applied.
For a simple example, assume an Alberta consultant is registered and invoices an Alberta client $2,000 for strategy work. The invoice would show $2,000 in consulting fees, $100 in GST, and a total due of $2,100. That $100 is not business income. It should be tracked separately from the moment it is collected.
Reimbursements, Deposits, and Expenses
Consultants often overlook GST/HST on amounts that do not feel like “revenue.” If you incur travel, materials, software, or subcontractor costs in your own name and then bill the client for reimbursement, GST/HST generally applies to the amount you charge the client. You may be able to claim an input tax credit for GST/HST you paid on the original eligible expense, provided you have proper supporting documentation.
Client deposits also require attention. GST/HST is generally collectible when consideration for a taxable service becomes due or is paid, whichever happens first. If a client pays a project deposit before the work is complete, the timing of the tax may follow the payment.
A true disbursement can be treated differently. This occurs when you pay an expense strictly as the client’s agent, rather than as part of providing your own service. The distinction is fact-specific, so do not assume every pass-through cost is tax-free simply because the client ultimately bears the cost.
Filing Returns and Protecting Your Cash Flow
After registration, the CRA assigns a filing frequency, often annually for smaller businesses, although quarterly or monthly filing may be available or required in certain circumstances. Your GST/HST return reports tax collected or collectible, less eligible input tax credits. The difference is the amount you remit or, in some cases, receive as a refund.
The practical challenge is that GST/HST collected can look like available cash. It is not. Set it aside in a separate account or track it carefully in your bookkeeping system. This is especially helpful if clients pay invoices late, because your reporting obligation may arise before you receive every payment.
Good records are the foundation of an accurate return. Keep invoices issued, vendor receipts, expense records, contracts, bank statements, and proof of payment. A bank balance alone does not show whether a purchase qualifies for an input tax credit or whether tax was charged at the correct rate.
Get the Setup Right Before Your Next Invoice
GST/HST can be manageable when it is built into your pricing, invoicing, and bookkeeping from the beginning. The key is to monitor the $30,000 threshold, register at the right time, apply the correct rate, and separate sales tax from operating income.
If your consulting business is expanding, has clients in several provinces, or includes reimbursed expenses and subcontractors, a review of your GST/HST setup can prevent small errors from becoming expensive ones. RheaM Accounting can help you organize the records and reporting process so you can invoice clients with clarity and focus on the work that grows your business.