Understanding HST/GST Filing for Small Businesses
- teamtaxbreak01
- Dec 2
- 4 min read
Navigating the world of taxes can be daunting, especially for small business owners. One of the most critical aspects of managing a business is understanding how to file your HST (Harmonized Sales Tax) or GST (Goods and Services Tax). Whether you are just starting out or have been in business for years, knowing the ins and outs of HST/GST filing is essential for compliance and financial health.
In this post, we will break down everything you need to know about HST/GST filing, including what it is, who needs to register, how to file, and common mistakes to avoid.

What is HST/GST?
HST and GST are types of sales taxes that businesses collect from customers on behalf of the government.
GST is a federal tax that applies to most goods and services sold in Canada. The current GST rate is 5%.
HST is a combination of the federal GST and provincial sales tax. It applies in provinces that have harmonized their sales tax systems with the federal government. The HST rate varies by province, ranging from 13% to 15%.
Understanding the difference between these two taxes is crucial for small business owners, as it affects how you charge your customers and report your sales.
Who Needs to Register for HST/GST?
Not every business is required to register for HST/GST. Here are the key points to consider:
Small Suppliers: If your business earns less than $30,000 in revenue over four consecutive quarters, you are considered a small supplier and do not need to register for HST/GST. However, you can choose to register voluntarily.
Businesses Above the Threshold: If your revenue exceeds $30,000, you must register for HST/GST. This applies to most businesses, including sole proprietorships, partnerships, and corporations.
Exemptions: Certain businesses, such as those providing exempt supplies (e.g., most health care services), may not need to register.
Registering for HST/GST is a straightforward process that can be done online through the Canada Revenue Agency (CRA) website.
How to Register for HST/GST
Registering for HST/GST is a simple process. Here’s how to do it:
Gather Necessary Information: You will need your business number, contact information, and details about your business activities.
Visit the CRA Website: Go to the CRA website and navigate to the registration section for HST/GST.
Complete the Application: Fill out the online application form. You can also register by phone or by mail if you prefer.
Receive Your Registration Number: Once your application is processed, you will receive a registration number, which you will use for all future HST/GST transactions.
Filing HST/GST Returns
Once registered, you must file HST/GST returns regularly. Here’s a step-by-step guide on how to do it:
Determine Your Filing Frequency
Your filing frequency will depend on your annual taxable sales:
Annual Filing: For small businesses with sales under $1.5 million.
Quarterly Filing: For businesses with sales between $1.5 million and $6 million.
Monthly Filing: For businesses with sales over $6 million.
Gather Your Records
Before filing, ensure you have all necessary records, including:
Sales invoices
Purchase receipts
Previous HST/GST returns
Complete Your Return
You can file your return online through the CRA’s My Business Account or by using paper forms. Here’s what to include:
Total sales and taxable supplies
Total HST/GST collected
Total HST/GST paid on purchases
Submit Your Return
Once completed, submit your return by the due date. Late submissions may incur penalties and interest.
Common Mistakes to Avoid
Filing HST/GST returns can be tricky, and small businesses often make mistakes. Here are some common pitfalls to watch out for:
Not Keeping Accurate Records: Failing to maintain proper records can lead to errors in your returns. Use accounting software to track sales and expenses accurately.
Missing Deadlines: Always be aware of your filing deadlines to avoid penalties. Set reminders for yourself or use calendar alerts.
Incorrect Calculations: Double-check your calculations to ensure accuracy. Mistakes can lead to overpaying or underpaying taxes.
Not Claiming Input Tax Credits: If you pay HST/GST on business expenses, you can claim input tax credits. Make sure to include these in your return.
Understanding Input Tax Credits
Input tax credits (ITCs) allow businesses to recover the HST/GST paid on purchases related to their commercial activities. Here’s how they work:
Eligibility: You can claim ITCs if you are registered for HST/GST and the purchases are for your business.
Documentation: Keep all receipts and invoices as proof of your purchases. You will need these when filing your return.
Claiming ITCs: When filing your return, report the total amount of ITCs you are claiming. This will reduce the amount of HST/GST you owe.
Conclusion
Understanding HST/GST filing is essential for small business owners. By knowing when to register, how to file, and common mistakes to avoid, you can ensure compliance and maintain your business's financial health.
As you navigate the complexities of HST/GST, remember to keep accurate records, stay informed about deadlines, and take advantage of input tax credits. This knowledge will empower you to manage your business effectively and avoid unnecessary penalties.
If you have further questions or need assistance, consider consulting with a tax professional who can provide personalized guidance tailored to your business needs.




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