If you’re starting a business in Ontario or looking to grow an existing one, understanding how to register for the Harmonized Sales Tax (HST) is crucial. The HST is a value-added tax that is applied to most goods and services sold in the province, and registering for it can seem daunting if you’re unfamiliar with the process. Fortunately, this blog post will guide you through the steps to register for HST in Ontario, ensuring you comply with regulations set forth by the Canada Revenue Agency (CRA).
What is HST?
The Harmonized Sales Tax (HST) combines the federal Goods and Services Tax (GST) and the provincial sales tax into a single tax. In Ontario, the current HST rate is 13%. This tax applies to most goods and services, which means businesses must charge it when making taxable sales. It’s important for businesses to register for HST to ensure compliance and to be able to claim input tax credits.
Who Needs to Register for HST?
Most businesses in Ontario need to register for HST if they meet specific criteria. Here’s when you must register:
- Your total worldwide revenue exceeds $30,000 in a single calendar quarter or over four consecutive calendar quarters.
- You provide taxable goods or services in Canada, which are subject to HST.
- You want to voluntarily register, even if your revenue is below the $30,000 threshold, to claim input tax credits.
If you’re just starting and anticipate generating enough revenue or if you work in specific sectors like construction or retail, it’s wise to register even before hitting that threshold, as it allows you to claim back the HST you pay on your purchases.
How to Register for HST in Ontario
Here are the steps to successfully register for HST in Ontario:
Step 1: Gather Required Information
Before you begin the registration process, make sure you have the following information handy:
- Your business number (BN) from the CRA, which is a unique identifier for your business.
- Your business structure details (e.g., sole proprietorship, partnership, corporation).
- Your estimated annual revenue.
- Bank account information for any refunds.
- Your contact information, including the address and phone number.
Step 2: Register Online or by Mail
You can register for HST in Ontario either online or via mail. The online method is generally faster and more efficient:
- Online:
- Visit the CRA website and log in to your account using your business number.
- Select the option to register for the HST.
- Fill out the necessary forms and ensure all the information is accurate.
- Submit your application.
- By Mail:
- Download and complete Form RC1, the Request for a Business Number.
- Mail the completed form to your local tax services office.
- Allow for additional processing time for your application.
Step 3: Receive Your HST Registration Number
Once your registration is processed, you will receive your HST registration number from the CRA. This number will be essential for dealings with your customers, as you must include it on invoices and receipts.
Filing Your HST Returns
After you have registered, you will need to file HST returns periodically. The frequency of your filings (monthly, quarterly, or annually) will depend on your revenue.
- Monthly Filers: Usually businesses with sales over $6 million.
- Quarterly Filers: Suitable for businesses with sales between $1.5 million and $6 million.
- Annual Filers: Mostly applies to businesses with annual revenue under $1.5 million.
Ensure you keep detailed records of your sales and purchases, as the CRA may request them for verification during an audit.
Claiming HST Input Tax Credits
One of the key benefits of registering for HST is the ability to claim input tax credits (ITCs) for the HST you pay on business-related goods and services. To claim ITCs:
- Ensure you retain all receipts.
- Include the claimed amounts on your HST return.
- Keep track of your business expenses meticulously to maximize your credits.
Final Thoughts
Registering for HST in Ontario is a necessary step for businesses looking to run legally and efficiently. By ensuring compliance and understanding how to manage HST filings and claims, you’ll set a solid foundation for your business. If you have more questions or need assistance, consider consulting a tax professional or visiting resources on the CRA and Ontario Business Registry websites.


