When do I need to add GST/HST to a price?

You need to add GST/HST when you have a net (pre-tax) price and want to calculate the total gross price including tax. This is common for invoicing and pricing products.

What are the different Canadian GST/HST rates?

Canada has GST at 5% with provincial HST/PST rates: Standard rate (5%), Reduced rate (5%), and Zero rate (0%). The standard 5% applies to most goods and services.

GST/HST Calculator Canada

When You Need to Add GST/HST to a Price

Adding GST/HST to a price is essential when you have a net amount (pre-tax price) and need to calculate what your customer will actually pay, or what you need to charge on an invoice. This is the opposite of reverse GST calculation.

Common Use Cases for Adding GST/HST

Freelance and Service Invoicing: Calculate the gross amount to bill clients when you work as a registered GST/HST business.
Retail Pricing: Determine shelf prices from your net cost when you need to add GST/HST to display prices.
Service Rate Setting: Convert your hourly net rate into a GST/HST-inclusive rate for quotes and proposals.
B2B Invoicing: Calculate invoice totals quickly when issuing bills to other businesses or consumers.
Products Costing: Add GST/HST to your product cost to determine the final customer price.
Quote Generation: Include accurate tax amounts when sending proposals to potential clients.

"When you're registered for GST/HST, you must add GST/HST to your invoices. Using our calculator ensures accuracy and saves time, especially when dealing with multiple invoices or different GST/HST rates."

Understanding GST/HST-Inclusive and Exclusive Pricing

Inclusive pricing means the displayed price already includes GST/HST (what the customer pays). Exclusive pricing shows the net amount before tax. As a GST/HST-registered business, you're responsible for:

Adding GST/HST to your invoices at the correct rate
Charging the gross amount to your customers
Remitting the GST/HST portion to CRA quarterly
Maintaining detailed records for audit purposes

The Formula for Adding GST/HST

The standard formula is simple: Gross = Net × (1 + GST/HST Rate%/100)

For example, with a 5% GST/HST rate: CA$100 net × 1.20 = CA$120 gross

This ensures consistency with CRA guidelines and official tax calculations. Our calculator automates this to prevent rounding errors and save time.

Need to Remove GST/HST Instead?

If you have a gross (total) price and need to find the net amount and GST/HST portion, use our Reverse GST/HST Calculator. It's perfect when you have receipts showing only the total and need to extract the pre-tax amount for accounting.

Try Reverse GST/HST Calculator

Frequently Asked Questions

Answers to common questions about adding GST/HST to prices

To calculate the Gross amount from the Net, multiply the Net by 1 + (GST/HST Rate / 100). For Canada standard rate (5%), multiply by 1.20.

You need to add GST/HST when you have a net (pre-tax) price and need to calculate what customers should pay or what to charge on invoices. This applies if you're a registered GST/HST business.

Yes. If you're a registered freelancer or business, you can use this calculator to quickly add GST/HST to your service rates and generate accurate invoices for clients.

Canada has GST at 5% with provincial HST/PST rates: Standard rate (5%) applies to most goods and services, Reduced rate (5%) applies to energy and certain items, and Zero rate (0%) applies to books, food products, and exports.

Yes. Our calculator uses the standard GST/HST formula: Gross = Net × (1 + GST/HST Rate/100). This is the method recommended by CRA and used in all official tax guidance.

Related Tools & Resources

Explore more GST/HST tools:

Reverse GST Calculator Canadian GST/HST Rates Quick Method Calculator Margin & Markup Calculator Small Business GST Guide

Official tax resources:

CRA – Canada Revenue Agency CRA – GST/HST for Business