diff --git a/src/types/billing_status.ts b/src/types/billing_status.ts
new file mode 100644
index 0000000..32ae66f
--- /dev/null
+++ b/src/types/billing_status.ts
@@ -0,0 +1,11 @@
+/**
+ * Workflow status for cashier billing.
+ * Paid: billing has been fully paid
+ * Unpaid: billing has not been paid
+ * Partially paid: billing has been partially paid
+ */
+export enum BillingStatus {
+    PAID = "PAID",
+    UNPAID = "UNPAID",
+    PARTIALLY_PAID = "PARTIALLY_PAID",
+}
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