You only need to specify this currency if it is different from the one you specified in the DocumentCurrencyCode element, as described in the Invoice Currency Code topic.

Use the TaxCurrencyCode element to model this information.

Element

Element	Description
`Invoice/TaxCurrencyCode`	The currency used for tax accounting and reporting purposes as accepted or required in the country of the Seller.

Restriction

You must use the codes from the ISO4217 list here.

Example

<Invoice>
    <!-- code omitted for clarity -->
    <cbc:TaxCurrencyCode>EUR</cbc:TaxCurrencyCode>
    <!-- code omitted for clarity -->
</Invoice>