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 ![Taxmarc](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_d45b90d852c51a38ef2a1fc42ed53e64/taxmarc.svg "Taxmarc")
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# Taxmarc Discussions

Taxmarc is an SAP-native, SAP-certified indirect tax determination engine for SAP ECC and SAP S/4HANA, which non-SAP ERPs can also call. For each sales and purchase transaction, it determines the indirect tax treatment (taxability, place of supply, exemptions, reverse charge and the resulting tax code) based on Taxmarc’s own law-based global tax content. Taxmarc is an SAP-certified add-on for SAP ECC and SAP S/4HANA. Its SAP-side agent gathers tax-relevant data across documents, including linking purchase and sales data for chain transactions with up to four parties. The determination is made by the Taxmarc Core, a stand-alone engine that can be deployed on premise or on SAP BTP. Other SAP systems and non-SAP ERPs can call the Core through RFC or web services, so the same tax rules apply across the landscape. An integrated Tax Control Framework checks each transaction when it is entered. Conditional facts, such as proof of transport, are handled as explicit settings, and transactions with incomplete data are flagged rather than given a default outcome. For every transaction, Taxmarc stores the full decision logic, not only the outcome. Further modules include Indirect Tax ID Validation, which checks business partner VAT numbers against VIES; Taxmarc Validate, which replays historical transactions to test determination accuracy; and Taxmarc Insight, which analyses determination data for trends, risk and scenarios. Implementation follows Taxmarc’s We Plug-You Play methodology.

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