HST/GST Filing Guide for Small Business Canada | 2026

Q: When do I need to register for HST in Canada?

When your taxable revenue exceeds $30,000. If you exceed $30,000 in a single calendar quarter, you stop being a small supplier immediately and must register effective the sale that put you over. If you exceed $30,000 over four consecutive calendar quarters (but not in any single quarter), you must register within 29 days of the day you become liable.

Q: How often do I file HST in Canada?

Annual (under $1.5M revenue), quarterly ($1.5M–$6M), or monthly (over $6M). CRA assigns your frequency when you register — you can request a change.

Q: Can I claim HST paid on bookkeeping services?

Yes. HST paid on professional services like bookkeeping is fully recoverable as an Input Tax Credit (ITC) for HST-registered businesses.

Q: What happens if I file HST late in Canada?

CRA charges 1% of the net tax owing, plus 0.25% per complete month the return is late (maximum 12 months). The maximum late-filing penalty is 4% of the amount owing. Interest also accrues daily at CRA's prescribed rate (7% for the first half of 2026) on any unpaid balance. Late HST is one of the most common and avoidable small business penalties.

Q: Does Alberta have HST?

No. Alberta only charges the 5% federal GST — there is no provincial sales tax. Alberta businesses file GST returns (not HST).

# HST/GST Filing Guide for Canadian Small Businesses (2026)

GST vs. HST: What's the Difference?

●GST (Goods and Services Tax): federal 5% — applies in Alberta, BC, Manitoba, Quebec, Saskatchewan
●HST (Harmonized Sales Tax): GST + provincial combined — Ontario (13%), Nova Scotia (14%), New Brunswick (15%), PEI (15%), Newfoundland (15%)
●BC and Quebec have separate provincial sales taxes (PST/QST) collected separately from GST

Provincial Sales Tax Rates

Province	Tax Type	Rate
Ontario	HST	13%
BC	GST + PST	5% + 7% = 12%
Alberta	GST only	5%
Quebec	GST + QST	5% + 9.975% = ~15%
Manitoba	GST + RST	5% + 7% = 12%
Nova Scotia	HST	14%
New Brunswick	HST	15%
PEI	HST	15%
Newfoundland	HST	15%
Saskatchewan	GST + PST	5% + 6% = 11%

When Do You Need to Register for HST/GST in Canada?

●Required: when taxable revenue exceeds $30,000 in any single calendar quarter OR in any four consecutive calendar quarters
●Voluntary registration: allowed at any time (advisable — lets you claim ITCs immediately)
●Certain businesses exempt: charities, small suppliers under threshold, some financial services

HST/GST Filing Deadlines in Canada

Filing Frequency	Who Qualifies	Due Date
Annual	Revenue under $1.5M	3 months after year-end
Quarterly	Revenue $1.5M–$6M	1 month after quarter-end
Monthly	Revenue over $6M	1 month after month-end

How to File a GST/HST Return in Canada

1. Calculate total HST/GST collected from customers 2. Calculate total ITCs (HST/GST paid on business expenses) 3. Net amount = HST collected minus ITCs = amount owing (or refund) 4. File online via CRA My Business Account or through your accounting software 5. Pay balance owing by due date

Input Tax Credits (ITCs): What You Can Claim

ITCs let you recover HST/GST paid on business purchases. Claimable on: office supplies, equipment, software subscriptions, professional services (bookkeeping!), vehicle expenses (business portion), marketing costs.

Not claimable on: personal expenses, meals/entertainment (50% limit), exempt purchases.

HST/GST Late Filing Penalties

●Penalty formula: 1% of the net tax owing, plus 0.25% per complete month the return is late (maximum 12 months)
●Maximum penalty: 4% of the amount owing (reached after 12 months late)
●Repeat offences (second failure within 3 years): 10% of net tax owing + 2%/month up to 20 months
●Interest: daily compound interest at CRA's prescribed rate (7% for the first half of 2026)
●Note: No penalty is charged if your balance owing is $0 or CRA owes you a refund

Does a Bookkeeper File HST Returns?

Yes. A qualified bookkeeper handles HST collection tracking, ITC recording, quarterly/annual return preparation and filing, and CRA correspondence. HST filing is included in our $500/month flat rate.

Learn more about our HST/GST filing service or outsourced bookkeeping services. See pricing.

Official Sources

All rates, filing thresholds, and penalty formulas in this guide are sourced directly from the Canada Revenue Agency:

Frequently Asked Questions

When do I need to register for HST in Canada?

How often do I file HST in Canada?

Can I claim HST paid on bookkeeping services?

What happens if I file HST late in Canada?

Does Alberta have HST?

Disclaimer: This article is published by Outsource Bookkeeping for general informational purposes only and is not bookkeeping, accounting, tax, payroll, or legal advice. Canadian tax and sales tax rules — including GST, HST, QST, PST, payroll source deductions, and CRA administrative positions — change frequently and apply differently in each province and to each business. Content may not be current or applicable to your situation. Outsource Bookkeeping is a bookkeeping service; we are not Chartered Professional Accountants (CPAs) and do not provide assurance, audit, review, or legal services. Always consult your CPA, tax advisor, or lawyer before acting on any information in this article. OutsourceBookkeeping accepts no liability for any loss arising from reliance on this content. See our full Disclaimer.

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