diff --git a/src/qt/transactiondesc.cpp b/src/qt/transactiondesc.cpp
index 74f5c774a..41ee89de0 100644
--- a/src/qt/transactiondesc.cpp
+++ b/src/qt/transactiondesc.cpp
@@ -24,7 +24,7 @@
 QString TransactionDesc::FormatTxStatus(const CWalletTx& wtx)
 {
     AssertLockHeld(cs_main);
-    if (!CheckFinalTx(wtx))
+    if (!CheckFinalTx(*wtx.tx))
     {
         if (wtx.tx->nLockTime < LOCKTIME_THRESHOLD)
             return tr("Open for %n more block(s)", "", wtx.tx->nLockTime - chainActive.Height());
diff --git a/src/qt/transactionrecord.cpp b/src/qt/transactionrecord.cpp
index d40ffd22c..8ac00ac4c 100644
--- a/src/qt/transactionrecord.cpp
+++ b/src/qt/transactionrecord.cpp
@@ -182,7 +182,7 @@ void TransactionRecord::updateStatus(const CWalletTx &wtx)
     status.depth = wtx.GetDepthInMainChain();
     status.cur_num_blocks = chainActive.Height();
 
-    if (!CheckFinalTx(wtx))
+    if (!CheckFinalTx(*wtx.tx))
     {
         if (wtx.tx->nLockTime < LOCKTIME_THRESHOLD)
         {
diff --git a/src/qt/transactiontablemodel.cpp b/src/qt/transactiontablemodel.cpp
index 59cef555b..e83d824a6 100644
--- a/src/qt/transactiontablemodel.cpp
+++ b/src/qt/transactiontablemodel.cpp
@@ -230,7 +230,7 @@ public:
         std::map<uint256, CWalletTx>::iterator mi = wallet->mapWallet.find(rec->hash);
         if(mi != wallet->mapWallet.end())
         {
-            std::string strHex = EncodeHexTx(static_cast<CTransaction>(mi->second));
+            std::string strHex = EncodeHexTx(*mi->second.tx);
             return QString::fromStdString(strHex);
         }
         return QString();
diff --git a/src/qt/walletmodeltransaction.cpp b/src/qt/walletmodeltransaction.cpp
index eae2c27f8..a2290535c 100644
--- a/src/qt/walletmodeltransaction.cpp
+++ b/src/qt/walletmodeltransaction.cpp
@@ -34,7 +34,7 @@ CWalletTx *WalletModelTransaction::getTransaction() const
 
 unsigned int WalletModelTransaction::getTransactionSize()
 {
-    return (!walletTransaction ? 0 : ::GetVirtualTransactionSize(*walletTransaction));
+    return (!walletTransaction ? 0 : ::GetVirtualTransactionSize(*walletTransaction->tx));
 }
 
 CAmount WalletModelTransaction::getTransactionFee() const
diff --git a/src/wallet/feebumper.cpp b/src/wallet/feebumper.cpp
index b5c5709ec..8b7c50b4e 100644
--- a/src/wallet/feebumper.cpp
+++ b/src/wallet/feebumper.cpp
@@ -89,7 +89,7 @@ CFeeBumper::CFeeBumper(const CWallet *pWallet, const uint256 txidIn, const CCoin
         return;
     }
 
-    if (!SignalsOptInRBF(wtx)) {
+    if (!SignalsOptInRBF(*wtx.tx)) {
         vErrors.push_back("Transaction is not BIP 125 replaceable");
         currentResult = BumpFeeResult::WALLET_ERROR;
         return;
@@ -103,7 +103,7 @@ CFeeBumper::CFeeBumper(const CWallet *pWallet, const uint256 txidIn, const CCoin
 
     // check that original tx consists entirely of our inputs
     // if not, we can't bump the fee, because the wallet has no way of knowing the value of the other inputs (thus the fee)
-    if (!pWallet->IsAllFromMe(wtx, ISMINE_SPENDABLE)) {
+    if (!pWallet->IsAllFromMe(*wtx.tx, ISMINE_SPENDABLE)) {
         vErrors.push_back("Transaction contains inputs that don't belong to this wallet");
         currentResult = BumpFeeResult::WALLET_ERROR;
         return;
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index 25b532743..30246a534 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -340,7 +340,7 @@ UniValue importprunedfunds(const JSONRPCRequest& request)
 
     LOCK2(cs_main, pwallet->cs_wallet);
 
-    if (pwallet->IsMine(wtx)) {
+    if (pwallet->IsMine(*wtx.tx)) {
         pwallet->AddToWallet(wtx, false);
         return NullUniValue;
     }
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 9854ace67..d4015f6c8 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -108,7 +108,7 @@ void WalletTxToJSON(const CWalletTx& wtx, UniValue& entry)
     std::string rbfStatus = "no";
     if (confirms <= 0) {
         LOCK(mempool.cs);
-        RBFTransactionState rbfState = IsRBFOptIn(wtx, mempool);
+        RBFTransactionState rbfState = IsRBFOptIn(*wtx.tx, mempool);
         if (rbfState == RBF_TRANSACTIONSTATE_UNKNOWN)
             rbfStatus = "unknown";
         else if (rbfState == RBF_TRANSACTIONSTATE_REPLACEABLE_BIP125)
@@ -2051,7 +2051,7 @@ UniValue gettransaction(const JSONRPCRequest& request)
     ListTransactions(pwallet, wtx, "*", 0, false, details, filter);
     entry.push_back(Pair("details", details));
 
-    std::string strHex = EncodeHexTx(static_cast<CTransaction>(wtx), RPCSerializationFlags());
+    std::string strHex = EncodeHexTx(*wtx.tx, RPCSerializationFlags());
     entry.push_back(Pair("hex", strHex));
 
     return entry;
diff --git a/src/wallet/test/accounting_tests.cpp b/src/wallet/test/accounting_tests.cpp
index 330878ceb..64244dcee 100644
--- a/src/wallet/test/accounting_tests.cpp
+++ b/src/wallet/test/accounting_tests.cpp
@@ -83,7 +83,7 @@ BOOST_AUTO_TEST_CASE(acc_orderupgrade)
 
     wtx.mapValue["comment"] = "y";
     {
-        CMutableTransaction tx(wtx);
+        CMutableTransaction tx(*wtx.tx);
         --tx.nLockTime;  // Just to change the hash :)
         wtx.SetTx(MakeTransactionRef(std::move(tx)));
     }
@@ -93,7 +93,7 @@ BOOST_AUTO_TEST_CASE(acc_orderupgrade)
 
     wtx.mapValue["comment"] = "x";
     {
-        CMutableTransaction tx(wtx);
+        CMutableTransaction tx(*wtx.tx);
         --tx.nLockTime;  // Just to change the hash :)
         wtx.SetTx(MakeTransactionRef(std::move(tx)));
     }
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 543bef32a..102a5644d 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1718,7 +1718,7 @@ CAmount CWalletTx::GetDebit(const isminefilter& filter) const
             debit += nDebitCached;
         else
         {
-            nDebitCached = pwallet->GetDebit(*this, ISMINE_SPENDABLE);
+            nDebitCached = pwallet->GetDebit(*tx, ISMINE_SPENDABLE);
             fDebitCached = true;
             debit += nDebitCached;
         }
@@ -1729,7 +1729,7 @@ CAmount CWalletTx::GetDebit(const isminefilter& filter) const
             debit += nWatchDebitCached;
         else
         {
-            nWatchDebitCached = pwallet->GetDebit(*this, ISMINE_WATCH_ONLY);
+            nWatchDebitCached = pwallet->GetDebit(*tx, ISMINE_WATCH_ONLY);
             fWatchDebitCached = true;
             debit += nWatchDebitCached;
         }
@@ -1751,7 +1751,7 @@ CAmount CWalletTx::GetCredit(const isminefilter& filter) const
             credit += nCreditCached;
         else
         {
-            nCreditCached = pwallet->GetCredit(*this, ISMINE_SPENDABLE);
+            nCreditCached = pwallet->GetCredit(*tx, ISMINE_SPENDABLE);
             fCreditCached = true;
             credit += nCreditCached;
         }
@@ -1762,7 +1762,7 @@ CAmount CWalletTx::GetCredit(const isminefilter& filter) const
             credit += nWatchCreditCached;
         else
         {
-            nWatchCreditCached = pwallet->GetCredit(*this, ISMINE_WATCH_ONLY);
+            nWatchCreditCached = pwallet->GetCredit(*tx, ISMINE_WATCH_ONLY);
             fWatchCreditCached = true;
             credit += nWatchCreditCached;
         }
@@ -1776,7 +1776,7 @@ CAmount CWalletTx::GetImmatureCredit(bool fUseCache) const
     {
         if (fUseCache && fImmatureCreditCached)
             return nImmatureCreditCached;
-        nImmatureCreditCached = pwallet->GetCredit(*this, ISMINE_SPENDABLE);
+        nImmatureCreditCached = pwallet->GetCredit(*tx, ISMINE_SPENDABLE);
         fImmatureCreditCached = true;
         return nImmatureCreditCached;
     }
@@ -1820,7 +1820,7 @@ CAmount CWalletTx::GetImmatureWatchOnlyCredit(const bool& fUseCache) const
     {
         if (fUseCache && fImmatureWatchCreditCached)
             return nImmatureWatchCreditCached;
-        nImmatureWatchCreditCached = pwallet->GetCredit(*this, ISMINE_WATCH_ONLY);
+        nImmatureWatchCreditCached = pwallet->GetCredit(*tx, ISMINE_WATCH_ONLY);
         fImmatureWatchCreditCached = true;
         return nImmatureWatchCreditCached;
     }
@@ -1861,7 +1861,7 @@ CAmount CWalletTx::GetChange() const
 {
     if (fChangeCached)
         return nChangeCached;
-    nChangeCached = pwallet->GetChange(*this);
+    nChangeCached = pwallet->GetChange(*tx);
     fChangeCached = true;
     return nChangeCached;
 }
@@ -1875,7 +1875,7 @@ bool CWalletTx::InMempool() const
 bool CWalletTx::IsTrusted() const
 {
     // Quick answer in most cases
-    if (!CheckFinalTx(*this))
+    if (!CheckFinalTx(*tx))
         return false;
     int nDepth = GetDepthInMainChain();
     if (nDepth >= 1)
@@ -2133,7 +2133,7 @@ void CWallet::AvailableCoins(std::vector<COutput> &vCoins, bool fOnlySafe, const
             const uint256& wtxid = it->first;
             const CWalletTx* pcoin = &(*it).second;
 
-            if (!CheckFinalTx(*pcoin))
+            if (!CheckFinalTx(*pcoin->tx))
                 continue;
 
             if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
@@ -2915,7 +2915,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
         wtxNew.SetTx(MakeTransactionRef(std::move(txNew)));
 
         // Limit size
-        if (GetTransactionWeight(wtxNew) >= MAX_STANDARD_TX_WEIGHT)
+        if (GetTransactionWeight(*wtxNew.tx) >= MAX_STANDARD_TX_WEIGHT)
         {
             strFailReason = _("Transaction too large");
             return false;
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 8315bbf3d..db2861c04 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -214,10 +214,6 @@ public:
         Init();
     }
 
-    /** Helper conversion operator to allow passing CMerkleTx where CTransaction is expected.
-     *  TODO: adapt callers and remove this operator. */
-    operator const CTransaction&() const { return *tx; }
-
     void Init()
     {
         hashBlock = uint256();
diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index b7f873c1e..180706b1e 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -268,7 +268,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
             CWalletTx wtx;
             ssValue >> wtx;
             CValidationState state;
-            if (!(CheckTransaction(wtx, state) && (wtx.GetHash() == hash) && state.IsValid()))
+            if (!(CheckTransaction(*wtx.tx, state) && (wtx.GetHash() == hash) && state.IsValid()))
                 return false;
 
             // Undo serialize changes in 31600