Use the TaxAmount sub-element of the TaxTotal element to model this information.

Elements

Name (Path)	Cardinality	Description
(`Invoice/TaxTotal/TaxSubtotal/TaxableAmount`)	1..1
(`Invoice/TaxTotal/TaxSubtotal/TaxAmount`)	1..1	Specify the tax amount.
(`Invoice/TaxTotal/TaxSubtotal/TaxAmount [@currencyID]`)	1..1	Specify the currency. This must match the currency in the DocumentCurrencyCode element.

Restrictions

If the DocumentCurrencyCode or the TaxCurrencyCode elements are JPY, then the tax amount cannot have decimals.
For non-tax Japanese Documents, the Tax Amount must be zero. The Tax Amount must match the TaxCurrencyCode currency. That is, usually JPY.

Example

Standard and self-billed

The following example is applicable to standard and self-billed Japanese Documents:

<ubl:Invoice>
	<!-- Code omitted for clarity -->
	<cac:TaxTotal>
		<!-- Code omitted for clarity -->
		<cac:TaxSubtotal>
			<!-- Code omitted for clarity -->
			<cbc:TaxableAmount currencyID="JPY">400</cbc:TaxableAmount>
			<cbc:TaxAmount currencyID="JPY">40</cbc:TaxAmount>
			<!-- Code omitted for clarity -->
    		</cac:TaxSubtotal>
		<!-- Code omitted for clarity -->		
	</cac:TaxTotal>
	<!-- Code omitted for clarity -->    		
</ubl:Invoice>

Non-Tax

The following example is for a non-tax Japanese Documents:

<ubl:Invoice>
	<!-- Code omitted for clarity -->
	<cac:TaxTotal>
		<!-- Code omitted for clarity -->
		<cac:TaxSubtotal>
			<!-- Code omitted for clarity -->
			<cbc:TaxableAmount currencyID="JPY">400</cbc:TaxableAmount>
			<cbc:TaxAmount currencyID="JPY">0</cbc:TaxAmount>
			<!-- Code omitted for clarity -->
    		</cac:TaxSubtotal>
		<!-- Code omitted for clarity -->		
	</cac:TaxTotal>
	<!-- Code omitted for clarity -->    		
</ubl:Invoice>