diff --git a/src/neo/BigDecimal.cs b/src/neo/BigDecimal.cs
index aaf541caa9..ad1948f6bc 100644
--- a/src/neo/BigDecimal.cs
+++ b/src/neo/BigDecimal.cs
@@ -18,6 +18,12 @@ public BigDecimal(BigInteger value, byte decimals)
             this.decimals = decimals;
         }
 
+        public BigDecimal(decimal value)
+        {
+            this.decimals = BitConverter.GetBytes(decimal.GetBits(value)[3])[2];
+            this.value = new BigInteger(decimal.Multiply((Decimal)Math.Pow(10, this.decimals), value));
+        }
+
         public BigDecimal ChangeDecimals(byte decimals)
         {
             if (this.decimals == decimals) return this;
diff --git a/tests/neo.UnitTests/UT_BigDecimal.cs b/tests/neo.UnitTests/UT_BigDecimal.cs
index cdde9f9e89..ccd147427a 100644
--- a/tests/neo.UnitTests/UT_BigDecimal.cs
+++ b/tests/neo.UnitTests/UT_BigDecimal.cs
@@ -30,12 +30,34 @@ public void TestBigDecimalConstructor()
             BigDecimal value = new BigDecimal(new BigInteger(45600), 7);
             value.Value.Should().Be(new BigInteger(45600));
             value.Decimals.Should().Be(7);
+
             value = new BigDecimal(new BigInteger(0), 5);
             value.Value.Should().Be(new BigInteger(0));
             value.Decimals.Should().Be(5);
+
             value = new BigDecimal(new BigInteger(-10), 0);
             value.Value.Should().Be(new BigInteger(-10));
             value.Decimals.Should().Be(0);
+
+            value = new BigDecimal(123.456789M);
+            value.Value.Should().Be(new BigInteger(123456789));
+            value.Decimals.Should().Be(6);
+
+            value = new BigDecimal(-123.45M);
+            value.Value.Should().Be(new BigInteger(-12345));
+            value.Decimals.Should().Be(2);
+
+            value = new BigDecimal(123.45M);
+            value.Value.Should().Be(new BigInteger(12345));
+            value.Decimals.Should().Be(2);
+
+            value = new BigDecimal(123M);
+            value.Value.Should().Be(new BigInteger(123));
+            value.Decimals.Should().Be(0);
+
+            value = new BigDecimal(0M);
+            value.Value.Should().Be(new BigInteger(0));
+            value.Decimals.Should().Be(0);
         }
 
         [TestMethod]