The GST/HST calculator helps Canadian small business owners estimate their net tax remittance based on revenue collected, input tax credits from business purchases, and the applicable tax rate for their province. Compare the regular method against the Quick Method to see which saves your business more money.
How this GST/HST calculator works
Select your province, reporting period, total revenue (before tax), and eligible business purchases (before tax). Choose the regular method or Quick Method. The calculator shows the GST/HST collected on revenue, your input tax credits, net remittance owing, and the effective tax cost to your business.
Note: Businesses with annual taxable revenue under $30,000 are considered small suppliers and may not need to register for GST/HST. The Quick Method is available to eligible small businesses with annual taxable supplies ≤ $400,000.
GST/HST rates by province (2026)
| Province | Tax Type | Rate |
|---|---|---|
| Alberta | GST | 5% |
| British Columbia | GST + PST | 5% + 7% = 12% |
| Manitoba | GST + RST | 5% + 7% = 12% |
| New Brunswick | HST | 15% |
| Newfoundland & Labrador | HST | 15% |
| Nova Scotia | HST | 15% |
| Ontario | HST | 13% |
| Prince Edward Island | HST | 15% |
| Quebec | GST + QST | 5% + 9.975% |
| Saskatchewan | GST + PST | 5% + 6% = 11% |
Important: PST and QST are separate provincial taxes that are not part of the federal GST/HST system. You remit GST/HST to the CRA, and PST/QST to the provincial government separately.
Regular Method vs Quick Method
Regular Method
- Track GST/HST on every business expense
- Claim full ITCs on all eligible purchases
- Best for businesses with high expenses relative to revenue
- More bookkeeping required
Quick Method
- Remit a flat % of tax-inclusive revenue
- No ITCs claimed on individual expenses
- 1% credit on first $30,000 of eligible supplies
- Best for businesses with low expenses (service providers)
Eligibility for Quick Method:
- Annual taxable supplies ≤ $400,000
- Not a public service body, charity, or listed financial institution
Quick Method rates (2026)
| Province | Purchasing supplies | Providing services |
|---|---|---|
| Ontario | 4.4% | 8.8% |
| Alberta | 2.6% | 3.6% |
| British Columbia | 3.6% | 3.6% |
| New Brunswick | 4.4% | 10.0% |
| Nova Scotia | 4.4% | 10.0% |
Example: consultant in Ontario
$100,000 in revenue, $15,000 in business expenses
| Method | GST/HST Collected | ITCs/Deduction | Net Remittance |
|---|---|---|---|
| Regular | $13,000 | $1,950 | $11,050 |
| Quick (8.8%) | — | — | $9,644 |
Savings with Quick Method: $1,406/year
For service businesses with low expenses, the Quick Method often saves $1,000-$3,000 per year.
ITCs — what you can and cannot claim
Eligible for ITCs
- Office supplies and equipment
- Business insurance
- Professional services (accounting, legal)
- Business travel and meals (50% for meals)
- Vehicle expenses (business use portion)
- Commercial rent
- Advertising and marketing
- Software subscriptions
Not eligible for ITCs
- Personal expenses
- Exempt supplies (residential rent, financial services)
- Club memberships
- Municipal property taxes
When to voluntarily register for GST/HST
Even if you are under the $30,000 small supplier threshold, registering may make sense if:
- Your business expenses are high — Claiming ITCs on purchases can result in a net refund
- You sell to other businesses — Registered businesses expect to see GST/HST on invoices for their own ITC claims
- You want to appear professional — Having a GST/HST number signals an established business
Related calculators
- Sales Tax Calculator — Calculate GST/HST/PST on consumer purchases
- Side Hustle Tax Calculator — Estimate income tax on self-employment earnings
- Income Tax Calculator — Calculate your overall tax obligation
- Marginal Tax Rate Calculator — Find your combined marginal rate
- Salary Calculator — Compare self-employment to employment income