diff --git a/numeric.go b/numeric.go
index f68e418..fda2499 100644
--- a/numeric.go
+++ b/numeric.go
@@ -115,9 +115,13 @@ func round(a interface{}, p int, rOpt ...float64) float64 {
 	var round float64
 	pow := math.Pow(10, places)
 	digit := pow * val
+	// Modf keeps the sign of the fraction. A negative fraction below the
+	// threshold rounds toward zero, matching the positive side.
 	_, div := math.Modf(digit)
 	if div >= roundOn {
 		round = math.Ceil(digit)
+	} else if div < 0 && div > -roundOn {
+		round = math.Ceil(digit)
 	} else {
 		round = math.Floor(digit)
 	}
diff --git a/numeric_test.go b/numeric_test.go
index 1252cd7..5f1105e 100644
--- a/numeric_test.go
+++ b/numeric_test.go
@@ -298,6 +298,15 @@ func TestRound(t *testing.T) {
 	assert.Equal(t, 123.0, round(123.49999999, 0))
 	assert.Equal(t, 123.23, round(123.2329999, 2, .3))
 	assert.Equal(t, 123.24, round(123.233, 2, .3))
+	// A negative fraction below the threshold rounds toward zero.
+	// -1.25 is exact in float64. Floor would return -2.
+	assert.Equal(t, -1.0, round(-1.25, 0))
+	assert.Equal(t, -2.0, round(-1.5, 0))
+	assert.Equal(t, -2.0, round(-1.75, 0))
+	assert.Equal(t, -123.0, round(-123.49999999, 0))
+	assert.Equal(t, -124.0, round(-123.500001, 0))
+	assert.Equal(t, -123.23, round(-123.2329999, 2, .3))
+	assert.Equal(t, -123.24, round(-123.233, 2, .3))
 }
 
 func TestRandomInt(t *testing.T) {