Oracle Receivables uses Oracle E-Business Tax as its tax engine. E-Business Tax provides a single set of application features that manage tax calculations for Receivables. Additionally, E-Business Tax is the repository of all tax-related data.
To set up and maintain tax, you use the Tax Configuration tab in E-Business Tax. Setup of new taxes involves defining the following entities:
jurisdictions
regimes
statuses
tax
tax rates
tax rules
tax accounts
See: Oracle E-Business Tax Implementation Guide and Oracle E-Business Tax User Guide.