diff --git a/src/miner.h b/src/miner.h
--- a/src/miner.h
+++ b/src/miner.h
@@ -29,6 +29,10 @@
     //!< Total real fees paid by the transaction and cached to avoid parent
     //!< lookup
     Amount txFee;
+    //!< Modified fees from mempool.  Set by the prioritisetransaction rpc.
+    //!< We need this for ordering, but the above txFee for proper coinbase
+    //!< calculations.
+    Amount txModFee;
     //!< Cached total size of the transaction to avoid reserializing transaction
     size_t txSize;
     //!< Cached total number of SigOps
@@ -45,11 +49,11 @@
     //!< Estimated package sigops (This is guaranteed to be >= real sigops)
     uint64_t packageSigOps;
 
-    CBlockTemplateEntry(CTransactionRef _tx, Amount _fees, uint64_t _size,
-                        int64_t _sigOps)
-        : tx(_tx), txFee(_fees), txSize(_size), txSigOps(_sigOps),
-          packageOrder(0), packageFee(_fees), packageSize(_size),
-          packageSigOps(_sigOps) {}
+    CBlockTemplateEntry(CTransactionRef _tx, Amount _fees, Amount _modFees,
+                        uint64_t _size, int64_t _sigOps)
+        : tx(_tx), txFee(_fees), txModFee(_modFees), txSize(_size),
+          txSigOps(_sigOps), packageOrder(0), packageFee(_modFees),
+          packageSize(_size), packageSigOps(_sigOps) {}
 
     // Calculate the feerate for this transaction.  Use the minimum of the
     // package feerate, or the transaction itself.  Parents TXNs should never
@@ -57,9 +61,9 @@
     CFeeRate FeeRate() const {
         // In order to avoid numerical errors, we reorder to use multiplication
         // instead of vision.
-        return int64_t(txSize) * packageFee < int64_t(packageSize) * txFee
+        return int64_t(txSize) * packageFee < int64_t(packageSize) * txModFee
                    ? CFeeRate(packageFee, packageSize)
-                   : CFeeRate(txFee, txSize);
+                   : CFeeRate(txModFee, txSize);
     }
 
 private:
diff --git a/src/miner.cpp b/src/miner.cpp
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -140,7 +140,8 @@
     pblock = &pblocktemplate->block;
 
     // Add dummy coinbase tx as first transaction.  It is updated at the end.
-    pblocktemplate->entries.emplace_back(CTransactionRef(), -SATOSHI, 0, -1);
+    pblocktemplate->entries.emplace_back(CTransactionRef(), -SATOSHI, -SATOSHI,
+                                         0, -1);
 
     LOCK2(cs_main, mempool->cs);
     CBlockIndex *pindexPrev = chainActive.Tip();
@@ -358,9 +359,9 @@
 }
 
 void BlockAssembler::AddToBlock(CTxMemPool::txiter iter) {
-    pblocktemplate->entries.emplace_back(iter->GetSharedTx(), iter->GetFee(),
-                                         iter->GetTxSize(),
-                                         iter->GetSigOpCount());
+    pblocktemplate->entries.emplace_back(
+        iter->GetSharedTx(), iter->GetFee(), iter->GetModifiedFee(),
+        iter->GetTxSize(), iter->GetSigOpCount());
     nBlockSize += iter->GetTxSize();
     ++nBlockTx;
     nBlockSigOps += iter->GetSigOpCount();
diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp
--- a/src/test/miner_tests.cpp
+++ b/src/test/miner_tests.cpp
@@ -780,21 +780,24 @@
 BOOST_AUTO_TEST_CASE(TestCBlockTemplateEntry) {
     const CTransaction tx;
     CTransactionRef txRef = MakeTransactionRef(tx);
-    CBlockTemplateEntry txEntry(txRef, 1 * SATOSHI, 200, 10);
+    CBlockTemplateEntry txEntry(txRef, 1 * SATOSHI, 2 * SATOSHI, 200, 10);
     BOOST_CHECK_MESSAGE(txEntry.tx == txRef, "Transactions did not match");
     BOOST_CHECK_EQUAL(txEntry.txFee, 1 * SATOSHI);
+    BOOST_CHECK_EQUAL(txEntry.txModFee, 2 * SATOSHI);
     BOOST_CHECK_EQUAL(txEntry.txSize, 200);
     BOOST_CHECK_EQUAL(txEntry.txSigOps, 10);
-    BOOST_CHECK_EQUAL(txEntry.packageFee, 1 * SATOSHI);
+    BOOST_CHECK_EQUAL(txEntry.packageFee, 2 * SATOSHI);
     BOOST_CHECK_EQUAL(txEntry.packageSize, 200);
     BOOST_CHECK_EQUAL(txEntry.packageSigOps, 10);
 
-    CBlockTemplateEntry txChildEntry(txRef, 10 * SATOSHI, 2000, 20);
+    CBlockTemplateEntry txChildEntry(txRef, 10 * SATOSHI, 11 * SATOSHI, 2000,
+                                     20);
     CBlockTemplateEntryTest::AccountForParent(txChildEntry, txEntry);
     BOOST_CHECK_EQUAL(txChildEntry.txFee, 10 * SATOSHI);
+    BOOST_CHECK_EQUAL(txChildEntry.txModFee, 11 * SATOSHI);
     BOOST_CHECK_EQUAL(txChildEntry.txSize, 2000);
     BOOST_CHECK_EQUAL(txChildEntry.txSigOps, 20);
-    BOOST_CHECK_EQUAL(txChildEntry.packageFee, 11 * SATOSHI);
+    BOOST_CHECK_EQUAL(txChildEntry.packageFee, 13 * SATOSHI);
     BOOST_CHECK_EQUAL(txChildEntry.packageSize, 2200);
     BOOST_CHECK_EQUAL(txChildEntry.packageSigOps, 30);
 }