Hi Evangelo Karadimas ,

Thank you for reaching out. One common reason for tax options not appearing correctly is related to the sales tax settings, particularly if there’s been a change in your business settings or if the system doesn't recognize the delivery address which affects the tax rate options, as outlined in our article "What Determines the Tax Rate Options Available when Recording Sales in Accounting".

Here’s what you can do:

1. Double-check the delivery address on your invoices to ensure it’s correct, as sales taxes in Canada are destination-based.
2. Review your tax rate settings to make sure they align with the destination province’s requirements.
3. If you do not enter a separate delivery address, the system will default to using the customer’s invoice address to determine the tax rates.

If you’ve verified these settings and are still facing issues, you might need to check your Tax Return Frequency settings as explained in the article "I Do Not Have the Option to Generate a Tax Return" to make sure everything is properly set up:

1. Go to Settings, then Business Settings, and select Sales Tax Settings.
2. Ensure you have a return frequency set for each province where you collect sales tax.

If after these steps the GST/HST still isn't showing up on your invoices, it may require a closer look at your account settings. Please reply to this message for further assistance, or you may want to contact our technical support team for immediate help.

We're here to ensure everything runs smoothly for you.

Warm Regards,
Erzsi