diff --git a/ext/shopspring-numeric/decimal.go b/ext/shopspring-numeric/decimal.go
index 70906806..148589a4 100644
--- a/ext/shopspring-numeric/decimal.go
+++ b/ext/shopspring-numeric/decimal.go
@@ -250,17 +250,7 @@ func (dst *Numeric) DecodeBinary(ci *pgtype.ConnInfo, src []byte) error {
 		return err
 	}
 
-	buf, err := num.EncodeText(ci, nil)
-	if err != nil {
-		return err
-	}
-
-	dec, err := decimal.NewFromString(string(buf))
-	if err != nil {
-		return err
-	}
-
-	*dst = Numeric{Decimal: dec, Status: pgtype.Present}
+	*dst = Numeric{Decimal: decimal.NewFromBigInt(num.Int, num.Exp), Status: pgtype.Present}
 
 	return nil
 }
diff --git a/ext/shopspring-numeric/decimal_test.go b/ext/shopspring-numeric/decimal_test.go
index 0b256b37..bf34e0dd 100644
--- a/ext/shopspring-numeric/decimal_test.go
+++ b/ext/shopspring-numeric/decimal_test.go
@@ -11,6 +11,7 @@ import (
 	shopspring "github.com/jackc/pgtype/ext/shopspring-numeric"
 	"github.com/jackc/pgtype/testutil"
 	"github.com/shopspring/decimal"
+	"github.com/stretchr/testify/require"
 )
 
 func mustParseDecimal(t *testing.T, src string) decimal.Decimal {
@@ -284,3 +285,46 @@ func TestNumericAssignTo(t *testing.T) {
 		}
 	}
 }
+
+func BenchmarkDecode(b *testing.B) {
+	benchmarks := []struct {
+		name      string
+		numberStr string
+	}{
+		{"Zero", "0"},
+		{"Small", "12345"},
+		{"Medium", "12345.12345"},
+		{"Large", "123457890.1234567890"},
+		{"Huge", "123457890123457890123457890.1234567890123457890123457890"},
+	}
+
+	for _, bm := range benchmarks {
+		src := &shopspring.Numeric{}
+		err := src.Set(bm.numberStr)
+		require.NoError(b, err)
+		textFormat, err := src.EncodeText(nil, nil)
+		require.NoError(b, err)
+		binaryFormat, err := src.EncodeBinary(nil, nil)
+		require.NoError(b, err)
+
+		b.Run(fmt.Sprintf("%s-Text", bm.name), func(b *testing.B) {
+			dst := &shopspring.Numeric{}
+			for i := 0; i < b.N; i++ {
+				err := dst.DecodeText(nil, textFormat)
+				if err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+
+		b.Run(fmt.Sprintf("%s-Binary", bm.name), func(b *testing.B) {
+			dst := &shopspring.Numeric{}
+			for i := 0; i < b.N; i++ {
+				err := dst.DecodeBinary(nil, binaryFormat)
+				if err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+	}
+}