diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp
index 5bbbafa07..06e6f792e 100644
--- a/src/test/miner_tests.cpp
+++ b/src/test/miner_tests.cpp
@@ -126,6 +126,11 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
     delete pblocktemplate;
 
+    const CAmount BLOCKSUBSIDY = 500*COIN;
+    const CAmount LOWFEE = 10*CENT;
+    const CAmount HIGHFEE = 10*COIN;
+    const CAmount HIGHERFEE = 40*COIN;
+
     // block sigops > limit: 1000 CHECKMULTISIG + 1
     tx.vin.resize(1);
     // NOTE: OP_NOP is used to force 20 SigOps for the CHECKMULTISIG
@@ -133,28 +138,28 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
     tx.vin[0].prevout.n = 0;
     tx.vout.resize(1);
-    tx.vout[0].nValue = 50000000000LL;
+    tx.vout[0].nValue = BLOCKSUBSIDY;
     for (unsigned int i = 0; i < 1001; ++i)
     {
-        tx.vout[0].nValue -= 1000000;
+        tx.vout[0].nValue -= LOWFEE;
         hash = tx.GetHash();
         bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
         // If we don't set the # of sig ops in the CTxMemPoolEntry, template creation fails
-        mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
+        mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
         tx.vin[0].prevout.hash = hash;
     }
     BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
     mempool.clear();
 
     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
-    tx.vout[0].nValue = 50000000000LL;
+    tx.vout[0].nValue = BLOCKSUBSIDY;
     for (unsigned int i = 0; i < 1001; ++i)
     {
-        tx.vout[0].nValue -= 1000000;
+        tx.vout[0].nValue -= LOWFEE;
         hash = tx.GetHash();
         bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
         // If we do set the # of sig ops in the CTxMemPoolEntry, template creation passes
-        mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).SigOps(20).FromTx(tx));
+        mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).SigOps(20).FromTx(tx));
         tx.vin[0].prevout.hash = hash;
     }
     BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
@@ -169,13 +174,13 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
         tx.vin[0].scriptSig << vchData << OP_DROP;
     tx.vin[0].scriptSig << OP_1;
     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
-    tx.vout[0].nValue = 50000000000LL;
+    tx.vout[0].nValue = BLOCKSUBSIDY;
     for (unsigned int i = 0; i < 128; ++i)
     {
-        tx.vout[0].nValue -= 10000000;
+        tx.vout[0].nValue -= LOWFEE;
         hash = tx.GetHash();
         bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
-        mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
+        mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
         tx.vin[0].prevout.hash = hash;
     }
     BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
@@ -184,24 +189,24 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
 
     // orphan in mempool, template creation fails
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).FromTx(tx));
     BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
     mempool.clear();
 
     // child with higher priority than parent
     tx.vin[0].scriptSig = CScript() << OP_1;
     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
-    tx.vout[0].nValue = 49000000000LL;
+    tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, entry.Fee(1000000000LL).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
     tx.vin[0].prevout.hash = hash;
     tx.vin.resize(2);
     tx.vin[1].scriptSig = CScript() << OP_1;
     tx.vin[1].prevout.hash = txFirst[0]->GetHash();
     tx.vin[1].prevout.n = 0;
-    tx.vout[0].nValue = 59000000000LL;
+    tx.vout[0].nValue = tx.vout[0].nValue+BLOCKSUBSIDY-HIGHERFEE; //First txn output + fresh coinbase - new txn fee
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, entry.Fee(4000000000LL).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(HIGHERFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
     BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
     delete pblocktemplate;
     mempool.clear();
@@ -213,7 +218,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     tx.vout[0].nValue = 0;
     hash = tx.GetHash();
     // give it a fee so it'll get mined
-    mempool.addUnchecked(hash, entry.Fee(100000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
     BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
     mempool.clear();
 
@@ -221,29 +226,29 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
     tx.vin[0].prevout.n = 0;
     tx.vin[0].scriptSig = CScript() << OP_1;
-    tx.vout[0].nValue = 49000000000LL;
+    tx.vout[0].nValue = BLOCKSUBSIDY-LOWFEE;
     script = CScript() << OP_0;
     tx.vout[0].scriptPubKey = GetScriptForDestination(CScriptID(script));
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, entry.Fee(100000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
     tx.vin[0].prevout.hash = hash;
     tx.vin[0].scriptSig = CScript() << std::vector<unsigned char>(script.begin(), script.end());
-    tx.vout[0].nValue -= 1000000;
+    tx.vout[0].nValue -= LOWFEE;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
     BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
     mempool.clear();
 
     // double spend txn pair in mempool, template creation fails
     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
     tx.vin[0].scriptSig = CScript() << OP_1;
-    tx.vout[0].nValue = 49000000000LL;
+    tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
     tx.vout[0].scriptPubKey = CScript() << OP_1;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, entry.Fee(1000000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
     tx.vout[0].scriptPubKey = CScript() << OP_2;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, entry.Fee(1000000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
     BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
     mempool.clear();
 
@@ -300,11 +305,11 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     tx.vin[0].nSequence = chainActive.Tip()->nHeight + 1; // txFirst[0] is the 2nd block
     prevheights[0] = baseheight + 1;
     tx.vout.resize(1);
-    tx.vout[0].nValue = 49000000000LL;
+    tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
     tx.vout[0].scriptPubKey = CScript() << OP_1;
     tx.nLockTime = 0;
     hash = tx.GetHash();
-    mempool.addUnchecked(hash, entry.Fee(1000000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
+    mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
     BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
     BOOST_CHECK(SequenceLocks(tx, flags, &prevheights, CreateBlockIndex(chainActive.Tip()->nHeight + 2))); // Sequence locks pass on 2nd block