Select Your Province / Territory
Choose your region to automatically apply statutory tax rates and itemization rules for your roofing contractor estimate.
GST / HST / PST: Official Rates & Who They Are For
Canada applies either the federal 5% Goods and Services Tax (GST), a combined Harmonized Sales Tax (HST) of 13%–15%, or a combination of 5% GST plus Provincial Sales Tax (PST/QST). Mandatory registration applies once gross worldwide taxable revenue exceeds $30,000 CAD over four consecutive quarters.
Applicable Canada Tax Tiers4 Tiers
Select appropriate rate for your estimateHarmonized Sales Tax (HST 13%–15%)
A single combined federal-provincial tax: 13% in Ontario; 15% in New Brunswick, Newfoundland and Labrador, Nova Scotia, and Prince Edward Island.
All trade contractors operating in Ontario and the Atlantic Canadian provinces.
- •Residential renovations and electrical service in Toronto and Ottawa (13% HST)
- •Plumbing, roofing, and heat pump installations in Halifax and St. John's (15% HST)
Federal GST Only (5%)
Only the 5% federal Goods and Services Tax applies. No provincial sales tax is charged in Alberta, Northwest Territories, Nunavut, and Yukon.
Contractors operating in Alberta, Calgary, Edmonton, and northern Canadian territories.
- •Commercial electrical installations in Calgary and Edmonton (5% GST)
- •Plumbing and heating maintenance in Yellowknife and Whitehorse (5% GST)
Dual Tax: GST (5%) + PST / QST (6%–9.975%)
Federal 5% GST charged alongside separate Provincial Sales Tax: 9.975% QST in Quebec (14.975% total), 7% PST in British Columbia (12% total), 6% PST in Saskatchewan (11% total), 7% PST in Manitoba (12% total).
Contractors in Quebec, British Columbia, Saskatchewan, and Manitoba requiring dual tax registration.
- •Residential construction and plumbing in Montreal (5% GST + 9.975% QST)
- •Electrical and HVAC services in Vancouver (5% GST + 7% PST)
Small Supplier Exemption ($0 Tax)
Contractors whose total taxable revenue does not exceed $30,000 CAD over four calendar quarters do not have to register for or charge GST/HST.
Part-time solo handymen and newly launched apprentices operating under the $30k CAD threshold.
- •Solo painter earning under $30,000 CAD per year
Canada Statutory Compliance Rules on Your Estimate
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Why Roofing Contractors in Canada Trust DoXMitra
As a professional roofing contractor operating in Canada, maintaining accurate and legally compliant estimates is critical for getting paid on time and managing your taxes. Our 2026-updated platform ensures that your documents automatically reflect the correct local tax rates, so you don't have to manually calculate them.
Whether you are on a residential job site or a commercial build, DoXMitra allows you to instantly generate, customize, and export your estimates to PDF directly from your phone or tablet. Build trust with your clients by providing clean, professional documentation every single time.