How does the default tax work with Tax 1 and Tax 2 fields?

If your account has two tax fields per line (Tax 1 and Tax 2), the Default Tax section displays two independent rows — “Default Tax 1” and “Default Tax 2” — each configured independently of the other. This means you can, for example, set a specific tax for the first field while leaving the second on “Match Product Tax,” or any other combination that suits your needs.

If your account has only one tax field per line, only a single row labeled “Default Tax” appears.