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# Include your GST number

If your company is GST registered, you should include your GST number on every invoice you create.

GST numbers are used in Canada, New Zealand, Malaysia, and Singapore. In Canada, these numbers are usually called GST/HST numbers.

## Add your GST number

To add the GST number of your company:

1. In your PDF Invoice - Order Printer account, go to the **Preferences** → **Store Details.**
2. Type in your GST number in the **Registration** **Number** field.
3. Click Save