You are trying to display tax separately from the price (aka tax exclusive)
AvaTax for Stripe Invoicing
- Pre-requirement: Pay_Immediately = false is required to be set on your account. Please contact Stripe to have this done if you haven't already.
- From the Stripe dashboard, click Customer.
- Click the customer you want update
- Under Metadata click Edit
- Add a Metadata line named IsTaxInclusive and set the value to false
- Click Save