Use the TaxExchangeRate element to capture the exchange between the Document Currency and Tax Currency.

Elements

Element	Cardinality	Description
Tax Exchange Rate (`Invoice/TaxExchangeRate/`)	0..1	A group of elements that specify the tax exchange rate that is applied to the Document amounts.
Source Currency Code (`Invoice/TaxExchangeRate/SourceCurrencyCode`)	1..1	Indicates the source or transaction currency. This is the same as the currency specified in the DocumentCurrencyCode element.
Target Currency Code (`Invoice/TaxExchangeRate/TargetCurrencyCode`)	1..1	To indicate the destination currency.
Calculation Rate `(Invoice/TaxExchangeRate/CalculationRate`)	1..1	The exchange rate. The rate is used to calculate the exchange. If the source currency is in USD, then the USD amount equals this rate multiplied by the target currency.

Restrictions

You must capture the Tax Exchange Rate for Portuguese B2G documents that originate outside the country.

Example

<ubl:Invoice>
    <!-- Code omitted for clarity -->
    <cac:TaxExchangeRate>
        <cbc:SourceCurrencyCode>ARS</cbc:SourceCurrencyCode>
        <cbc:TargetCurrencyCode>EUR</cbc:TargetCurrencyCode>
        <cbc:CalculationRate>0.00097</cbc:CalculationRate>
    </cac:TaxExchangeRate>
     <!-- Code omitted for clarity -->
</ubl:Invoice>