Hi ​@Accountants Direct - Thanks for reaching out!

In this case, I’d recommend reaching out to our billing team at billing@calendly.com to help with this. Here is an excerpt from our help center on GST:

To determine which tax and tax rate is applied to your Calendly bill, we will primarily use your billing address. If you are a business and have entered a company address in your tax information, your tax rate will primarily be based on your company address. It is your responsibility as a customer to ensure that your address is accurate.

• Owners and admins can update billing and company details, including the address, on the Billing page.

Calendly is required to charge Good and Services Tax (GST) on services provided to certain customers within Australia. Subsequently, Calendly will remit the collected GST to the local tax authorities.

If you are a business customer and are registered for GST, you should provide your Australian Business Number (ABN) and company information (legal name, address) to Calendly. If the ABN number is valid and you are registered for GST, in principle, no GST should be charged on your subscription. If you do not have a valid ABN number or you have an ABN number but are not registered for GST, then GST may be charged on your subscription.

An ABN is a unique 11-digit number that identifies a customer who conducts business in Australia. Calendly will use the Australian Business Register (an official database for checking the validity of ABN numbers and GST registration) to validate ABN numbers and GST registration. If the information provided is found to be incorrect, Calendly reserves the right to charge and collect an additional amount in respect of GST related to the transactions.

Update tax info

If your organization is a business, please enter your valid Tax ID and company information on your Billing page to ensure tax is not applied on future invoices. Review this article on how to update your tax ID. 

Let me know if you have any questions on this!