diff --git a/zero.go b/zero.go
new file mode 100644
index 0000000..132d135
--- /dev/null
+++ b/zero.go
@@ -0,0 +1,31 @@
+package decimal
+
+// EqualZero returns whether the numbers represented by d equals zero.
+func (d Decimal) EqualZero() bool {
+	return d.Equal(Zero)
+}
+
+// NotZero returns whether d is not zero
+func (d Decimal) NotZero() bool {
+	return !d.EqualZero()
+}
+
+// GreaterThanZero (GT0) returns true when d is greater than zero.
+func (d Decimal) GreaterThanZero() bool {
+	return d.GreaterThan(Zero)
+}
+
+// GreaterThanOrEqualZero (GTE0) returns true when d is greater than or equal to zero.
+func (d Decimal) GreaterThanOrEqualZero() bool {
+	return d.GreaterThanOrEqual(Zero)
+}
+
+// LessThanZero returns true when d is less than zero.
+func (d Decimal) LessThanZero() bool {
+	return d.LessThan(Zero)
+}
+
+// LessThanOrEqualZero returns true when d is less than or equal to zero.
+func (d Decimal) LessThanOrEqualZero() bool {
+	return d.LessThanOrEqual(Zero)
+}