diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/TransactionCalculator.java b/library/src/main/java/org/mustangproject/ZUGFeRD/TransactionCalculator.java
index 414ef7bf..839c9b27 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/TransactionCalculator.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/TransactionCalculator.java
@@ -146,7 +146,7 @@ public class TransactionCalculator implements IAbsoluteValueProvider {
 			BigDecimal percent = currentItem.getProduct().getVATPercent();
 			LineCalculator lc = new LineCalculator(currentItem);
 			VATAmount itemVATAmount = new VATAmount(lc.getItemTotalNetAmount(), lc.getItemTotalVATAmount(),
-					trans.getDocumentCode());
+					currentItem.getCategoryCode());
 			VATAmount current = hm.get(percent);
 			if (current == null) {
 				hm.put(percent, itemVATAmount);
diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD1PullProvider.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD1PullProvider.java
index 898c177d..9f954256 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD1PullProvider.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD1PullProvider.java
@@ -107,7 +107,6 @@ public class ZUGFeRD1PullProvider extends ZUGFeRD2PullProvider implements IXMLPr
 		this.calc=new TransactionCalculator(trans);
 
 		boolean hasDueDate=false;
-		String taxCategoryCode="";
 		SimpleDateFormat germanDateFormat = new SimpleDateFormat("dd.MM.yyyy");
 		String exemptionReason="";
 
@@ -261,7 +260,7 @@ public class ZUGFeRD1PullProvider extends ZUGFeRD2PullProvider implements IXMLPr
 						+ "				<ram:TypeCode>VAT</ram:TypeCode>\n"
 						+ exemptionReason
 						+ "				<ram:BasisAmount currencyID=\"" + trans.getCurrency() + "\">" + currencyFormat(amount.getBasis()) + "</ram:BasisAmount>\n" // currencyID=\"EUR\"
-						+ "				<ram:CategoryCode>"+taxCategoryCode+"</ram:CategoryCode>\n"
+						+ "				<ram:CategoryCode>"+amount.getCategoryCode()+"</ram:CategoryCode>\n"
 						+ "				<ram:ApplicablePercent>" + vatFormat(currentTaxPercent)
 						+ "</ram:ApplicablePercent>\n" + "			</ram:ApplicableTradeTax>\n"; //$NON-NLS-2$
 
@@ -318,7 +317,6 @@ public class ZUGFeRD1PullProvider extends ZUGFeRD2PullProvider implements IXMLPr
 		int lineID = 0;
 		for (IZUGFeRDExportableItem currentItem : trans.getZFItems()) {
 			lineID++;
-			taxCategoryCode=currentItem.getProduct().getTaxCategoryCode();
 			if  (currentItem.getProduct().getTaxExemptionReason() != null) {
 				exemptionReason="<ram:ExemptionReason>" + XMLTools.encodeXML(currentItem.getProduct().getTaxExemptionReason()) + "</ram:ExemptionReason>";
 			}
diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java
index b9d96e5a..4895122f 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java
@@ -218,7 +218,6 @@ public class ZUGFeRD2PullProvider implements IXMLProvider {
 		this.calc = new TransactionCalculator(trans);
 
 		boolean hasDueDate = false;
-		String taxCategoryCode = "";
 		SimpleDateFormat germanDateFormat = new SimpleDateFormat("dd.MM.yyyy");
 
 		String exemptionReason = "";
@@ -298,7 +297,6 @@ public class ZUGFeRD2PullProvider implements IXMLProvider {
 		int lineID = 0;
 		for (IZUGFeRDExportableItem currentItem : trans.getZFItems()) {
 			lineID++;
-			taxCategoryCode = currentItem.getProduct().getTaxCategoryCode();
 			if (currentItem.getProduct().getTaxExemptionReason() != null) {
 				exemptionReason = "<ram:ExemptionReason>" + XMLTools.encodeXML(currentItem.getProduct().getTaxExemptionReason()) + "</ram:ExemptionReason>";
 			}
@@ -492,7 +490,7 @@ public class ZUGFeRD2PullProvider implements IXMLProvider {
 						+ "				<ram:TypeCode>VAT</ram:TypeCode>\n"
 						+ exemptionReason
 						+ "				<ram:BasisAmount>" + currencyFormat(amount.getBasis()) + "</ram:BasisAmount>\n" // currencyID=\"EUR\"
-						+ "				<ram:CategoryCode>" + taxCategoryCode + "</ram:CategoryCode>\n"
+						+ "				<ram:CategoryCode>" + amount.getCategoryCode() + "</ram:CategoryCode>\n"
 						+ "				<ram:RateApplicablePercent>" + vatFormat(currentTaxPercent)
 						+ "</ram:RateApplicablePercent>\n" + "			</ram:ApplicableTradeTax>\n"; //$NON-NLS-2$