GST/HST basics
CRA Business Expenses and GST/HST Input Tax Credits
See which expenses may support GST/HST input tax credits, how business use affects a claim, and how an ITC differs from an income tax deduction.
HST in Canada
GST/HST guides for Canada
Practical guides to GST/HST rates, registration, invoicing and filing for Canadian small businesses. Start with a guide, or use the calculator when you need the numbers.
119 guides
Invoicing
Canadian Invoice Template: Fields to Include
Copy a Canadian invoice template, see a worked HST example, and check what your customer needs to support an input tax credit.
Registration
Form RC145: How to Cancel or Close a GST/HST Account
Close a GST/HST account when eligible and prepare the final return and records for closing adjustments.
GST/HST basics
Reverse GST/HST Calculator: Find the Price Before Tax
Extract GST, HST, PST or QST from a tax-included total. Select the correct province and taxes, then compare the breakdown with your receipt.
GST/HST basics
How Is GST Calculated? Formulas and Worked Examples
Calculate 5% GST manually, extract included GST, and understand how HST and separate provincial taxes change the result.
Rates by province
Quebec Sales Tax Calculator
Add or remove Quebec sales tax with a working calculator, standard rates, formulas, examples, and limits for taxable purchases.
GST/HST basics
GST and PST Calculator: Add or Remove Both Taxes
Calculate standard GST plus PST or RST for BC, Manitoba and Saskatchewan, with separate tax components and reverse calculations.
Rates by province
Saskatchewan Sales Tax Calculator
Add or remove Saskatchewan sales tax with a working calculator, standard rates, formulas, examples, and limits for taxable purchases.
Rates by province
Ontario HST Calculator: Add or Remove 13% Sales Tax
Add or remove Ontario sales tax with a working calculator, standard rates, formulas, examples, and limits for taxable purchases.
Rates by province
Nova Scotia HST Calculator
Add or remove Nova Scotia sales tax with a working calculator, standard rates, formulas, examples, and limits for taxable purchases.