diff --git a/core/src/main/scala/org/bitcoins/core/protocol/transaction/TxUtil.scala b/core/src/main/scala/org/bitcoins/core/protocol/transaction/TxUtil.scala
index d3a323b425..6c17e85fbe 100644
--- a/core/src/main/scala/org/bitcoins/core/protocol/transaction/TxUtil.scala
+++ b/core/src/main/scala/org/bitcoins/core/protocol/transaction/TxUtil.scala
@@ -289,7 +289,9 @@ object TxUtil {
 
       val actualFee = creditingAmount - spentAmount
       val estimatedFee = expectedFeeRate * expectedTx
-      isValidFeeRange(estimatedFee, actualFee, expectedFeeRate)
+      isValidFeeRange(estimatedFee = estimatedFee,
+                      actualFee = actualFee,
+                      feeRate = expectedFeeRate)
     }
   }
 
@@ -328,10 +330,10 @@ object TxUtil {
       val min = Satoshis(-acceptableVariance)
       val max = Satoshis(acceptableVariance)
       val difference = estimatedFee - actualFee
-      if (difference <= min) {
-        TxBuilderError.HighFee
-      } else if (difference >= max) {
-        TxBuilderError.LowFee
+      if (difference < min) {
+        TxBuilderError.highFee(estimatedFee, actualFee)
+      } else if (difference > max) {
+        TxBuilderError.lowFee(min = estimatedFee, actual = actualFee)
       } else {
         Success(())
       }
diff --git a/core/src/main/scala/org/bitcoins/core/wallet/builder/TxBuilderError.scala b/core/src/main/scala/org/bitcoins/core/wallet/builder/TxBuilderError.scala
index df48f3a8be..476a6fb302 100644
--- a/core/src/main/scala/org/bitcoins/core/wallet/builder/TxBuilderError.scala
+++ b/core/src/main/scala/org/bitcoins/core/wallet/builder/TxBuilderError.scala
@@ -1,5 +1,6 @@
 package org.bitcoins.core.wallet.builder
 
+import org.bitcoins.core.currency.CurrencyUnit
 import org.bitcoins.core.protocol.transaction.TransactionOutput
 
 import scala.util.Failure
@@ -169,15 +170,21 @@ object TxBuilderError {
   /** Means that the fee was too low for
     * [[org.bitcoins.core.wallet.builder.TxBuilder.feeRate TxBuilder.feeRate]]
     */
-  val LowFee = Failure(
-    new IllegalArgumentException("Means that the fee was too low"))
+  def lowFee(min: CurrencyUnit, actual: CurrencyUnit): Failure[Nothing] = {
+    Failure(
+      new IllegalArgumentException(
+        s"Means that the fee was too low min=$min actual=$actual"))
+  }
 
   /** Means tha this transaction pays too high of a fee for
     * [[org.bitcoins.core.wallet.builder.TxBuilder.feeRate TxBuilder.feeRate]]
     */
 
-  val HighFee = Failure(
-    new IllegalArgumentException("Means that the fee was too high"))
+  def highFee(max: CurrencyUnit, actual: CurrencyUnit): Failure[Nothing] = {
+    Failure(
+      new IllegalArgumentException(
+        s"Means that the fee was too high, max=$max actual=$actual"))
+  }
 
   /** Indicates we are spending multiple
     * [[org.bitcoins.core.protocol.script.CLTVScriptPubKey CLTVScriptPubKey]],