Why tax getting calculated in subscription for few customers?

Summary:

There's no exempt tax setup done for any customers, however for few customers the tax is getting calculated in subscription line and for few it is not ?

Content (please ensure you mask any confidential information):

Below the tax amount is coming in for this customer, while for other customers it is not coming? Why?

We've validated the customer account and site tax profile for all customer; there's no setup done for any, then why tax is getting calculated on subscription for this customer?

Version (include the version you are using, if applicable):

25D (11.13.25.10.0)

Code Snippet (add any code snippets that support your topic, if applicable):