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. Free, accurate, no sign-up, no tracking.
Transaction
HST Calculation
Total with Tax
C$113
13% HST
Pre-tax Amount
C$100
HST (13%)
C$13
Total with Tax
C$113
For estimation only. Not professional financial, tax, or legal advice. Consult a qualified advisor before making decisions. Full disclaimer.
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.
Common questions about GST/HST
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.