The highest tagged major version is v81.

tax/

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Path	Synopsis
association Package association provides the association related APIs	Package association provides the association related APIs
calculation Package calculation provides the /tax/calculations APIs	Package calculation provides the /tax/calculations APIs
form Package form provides the /tax/forms APIs	Package form provides the /tax/forms APIs
registration Package registration provides the /tax/registrations APIs	Package registration provides the /tax/registrations APIs
settings Package settings provides the /tax/settings APIs	Package settings provides the /tax/settings APIs
transaction Package transaction provides the /tax/transactions APIs	Package transaction provides the /tax/transactions APIs