GST/HST Calculator
Calculate GST, HST, PST, or QST for any Canadian province. Add tax to a price, or reverse-calculate the pre-tax amount.
Transaction
HST Calculation
Total with Tax
C$113
13% HST
Pre-tax Amount
C$100
HST (13%)
C$13
Total with Tax
C$113
GST, HST, PST, QST — what's the difference?
Canada has three sales tax systems that vary by province. GST (5%) is the federal goods & services tax and applies everywhere. HST (Harmonized Sales Tax, 13–15%) combines GST with provincial tax in ON, NB, NS, NL, and PE. Non-HST provinces charge GST plus a separate PST (Provincial Sales Tax) — or QST in Quebec, which works like HST but is administered provincially.
2026 provincial rates
HST: Ontario 13%, NB/NS/NL/PE 15%. GST-only: Alberta, Yukon, NWT, Nunavut (5% total). GST+PST: BC (5%+7%=12%), SK (5%+6%=11%), MB (5%+7%=12%). Quebec: 5% GST + 9.975% QST ≈ 14.975%.
Registration threshold
Businesses with over $30,000 in taxable revenue over 4 consecutive quarters must register for GST/HST. Voluntary registration below threshold lets you claim input tax credits (ITCs) on business purchases.
Add vs remove tax
Add mode: enter a pre-tax amount, see total. Remove mode: enter a tax-inclusive price (the one on the receipt) to back out the base and tax portions. Essential for expense reporting and ITC claims.
Frequently Asked Questions
Everything you need to know, in one place.
What is the difference between GST, HST, PST, and QST?
GST (Goods & Services Tax) is the federal 5% tax. HST (Harmonized Sales Tax) blends GST with provincial tax in some provinces (ON, NS, NB, NL, PE — 13-15%). PST is separate provincial tax (BC, SK, MB). QST is Quebec provincial tax (9.975%). Alberta, Yukon, NWT, Nunavut charge GST only.
Which province has the highest sales tax?
Three-way tie at 15%: Nova Scotia, New Brunswick, Newfoundland & Labrador, PEI (all HST). Quebec is 14.975% (GST+QST). Alberta is the lowest at 5% (GST only — no provincial tax).
Do I need to pay GST/HST as a freelancer?
You must register and charge GST/HST once your business revenue exceeds $30,000 in any 4 consecutive quarters (Small Supplier threshold). Below that, registration is optional. Registering lets you claim Input Tax Credits (ITCs) on business expenses.
Are there GST-exempt items?
Yes: basic groceries, prescription drugs, most healthcare, residential rent, most financial services, educational services, and child care. Also, exports are zero-rated (0% instead of 5%).
When must I file GST/HST returns?
Filing frequency depends on total annual taxable supplies: under $1.5M — annual (unless elected more often); $1.5M-$6M — quarterly; above $6M — monthly. Small suppliers who voluntarily register usually file annually. Returns and payments due one month after the reporting period ends (three months for annual filers). Late filing penalty: $250 minimum. Electronic filing (My Business Account) is mandatory for most registrants. Keep records for 6 years.
What are Input Tax Credits (ITCs)?
Registered businesses recover GST/HST paid on purchases used to make taxable supplies. Example: buy a $1,130 laptop in Ontario ($1,000 + $130 HST) — claim $130 ITC on your next return. Exceptions: personal use, meals & entertainment (50% recoverable), club memberships (not recoverable), exempt supplies (no ITCs). New registrants can claim ITCs on inventory and capital property held at registration date. Keep detailed invoices showing supplier's GST/HST number.
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