Free tax utility

Canada GST/HST calculator

Use this Canada GST/HST calculator to add tax to a net amount or find the net amount within a gross total, and prepare cleaner invoice data before you bill a client.

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Last reviewed July 8, 2026. This page is not tax, legal, or financial advice.

GST/HST estimate

Canada calculator with an editable tax rate

Calculate from
Net amountCA$1,000.00
GST/HST at 13%CA$130.00
Estimated totalCA$1,130.00
Use this before invoicing
  • Default currency: CAD
  • Default rate shown: 13%
  • BN (Business Number) can be captured on DingVoice customer and company records.
  • Always confirm local tax registration, exemptions, and filing rules before sending official documents.
From calculator to document

DingVoice helps turn calculator estimates into invoices with customer details, document history, payment status, and reports. Use this page to sanity-check totals, then confirm the correct tax setup before sending official documents.

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Frequently asked questions

How does this GST/HST calculator work?

Choose net amount to add tax, or gross amount to extract tax already included in a total. Enter the amount and tax rate to see the estimated net amount, GST/HST, and invoice total.

Is the 13% rate always correct for Canada?

No. It is a common starting rate for this page, but local rules, exemptions, reduced rates, provinces, states, and product categories can change the final rate.

Can I create invoices with these totals in DingVoice?

Yes. DingVoice helps you create invoices, store customer details, and keep document history, while you remain responsible for choosing the correct tax treatment.