diff --git a/src/SerializedTransaction.cpp b/src/SerializedTransaction.cpp
index 497c9aac9..3b1f7fdc8 100644
--- a/src/SerializedTransaction.cpp
+++ b/src/SerializedTransaction.cpp
@@ -38,14 +38,14 @@ SerializedTransaction::SerializedTransaction(SerializerIterator& sit, int length
 	mMiddleTxn.giveObject(new STUInt64("Fee", sit.get64()));
 
 	mInnerTxn = STObject(mFormat->elements, sit, "InnerTransaction");
-	updateSigningAccount();
+	updateSourceAccount();
 }
 
-void SerializedTransaction::updateSigningAccount()
+void SerializedTransaction::updateSourceAccount()
 {
 	NewcoinAddress a;
 	a.setAccountPublic(peekRawSigningAccount());
-	mSigningAccount = a.getAccountID();
+	mSourceAccount.setAccountID(a.getAccountID());
 }
 
 int SerializedTransaction::getLength() const
@@ -207,7 +207,7 @@ void SerializedTransaction::setSigningAccount(const std::vector<unsigned char>&
 	STVariableLength* v = dynamic_cast<STVariableLength*>(mMiddleTxn.getPIndex(TransactionISigningAccount));
 	if (!v) throw std::runtime_error("corrupt transaction");
 	v->setValue(s);
-	updateSigningAccount();
+	updateSourceAccount();
 }
 
 uint160 SerializedTransaction::getITFieldAccount(SOE_Field field) const
diff --git a/src/SerializedTransaction.h b/src/SerializedTransaction.h
index 452ba283f..bdcae423d 100644
--- a/src/SerializedTransaction.h
+++ b/src/SerializedTransaction.h
@@ -8,6 +8,7 @@
 #include "uint256.h"
 #include "SerializedObject.h"
 #include "TransactionFormats.h"
+#include "NewcoinAddress.h"
 
 class SerializedTransaction : public STObject
 {
@@ -15,13 +16,13 @@ public:
 	typedef boost::shared_ptr<SerializedTransaction> pointer;
 
 protected:
-	uint160 mSigningAccount;
+	NewcoinAddress mSourceAccount;
 	TransactionType mType;
 	STVariableLength mSignature;
 	STObject mMiddleTxn, mInnerTxn;
 	TransactionFormat* mFormat;
 
-	void updateSigningAccount();
+	void updateSourceAccount();
 
 public:
 	SerializedTransaction(SerializerIterator& sit, int length); // -1=all remaining, 0=get from sit
@@ -45,10 +46,12 @@ public:
 	// middle transaction functions
 	uint32 getVersion() const;
 	void setVersion(uint32);
+
 	TransactionType getTxnType() const { return mType; }
 	uint64 getTransactionFee() const;
 	void setTransactionFee(uint64);
-	uint160 getSigningAccount() const { return mSigningAccount; }
+
+	const NewcoinAddress& getSourceAccount() const { return mSourceAccount; }
 	std::vector<unsigned char> getRawSigningAccount() const;
 	const std::vector<unsigned char>& peekRawSigningAccount() const;
 	std::vector<unsigned char>& peekRawSigningAccount();
@@ -90,6 +93,10 @@ public:
 		{ return mInnerTxn.setValueFieldVL(field, v); }
 	void setITFieldTL(SOE_Field field, const std::vector<TaggedListItem>& v)
 		{ return mInnerTxn.setValueFieldTL(field, v); }
+	void setITFieldAccount(SOE_Field field, const uint160& v)
+		{ return mInnerTxn.setValueFieldAccount(field, v); }
+	void setITFieldAccount(SOE_Field field, const NewcoinAddress& v)
+		{ return mInnerTxn.setValueFieldAccount(field, v); }
 
 	// optional field functions
 	bool getITFieldPresent(SOE_Field field) const;