1. Navigate to the Tax Rules window (Brazilian Oracle Receivables: Setup > Tax > Tax Rules).

2. Enter a tax category in the Category field.

3. Enter the contributor type to use with this tax category in the Contributor Type field.

4. Enter the transaction type to use with this tax category in the Transaction Type field.

5. In the Rule Level field, enter Base or Rate to define whether this rule applies to the base or rate amount.

6. In the Priority field, enter the that this rule is applied. The default order is sequential.

7. Enter the name of the rule in the Rule field. Oracle Receivables looks at this rule to apply tax to transactions that have this combination of tax category, transaction type, and contributor type.

8. Save your work.

Note: You can define default hierarchies independent of tax categories if you enter DEFAULT in the Contributer Type field and enter the same transaction type that is in the System Options window in the Transaction Type field. If you do not define specific rules for finding the tax rates, Receivables uses the hierarchy for tax rules.