diff --git a/src/operations/dailyBalance.ts b/src/operations/dailyBalance.ts
new file mode 100644
index 0000000..ab01d70
--- /dev/null
+++ b/src/operations/dailyBalance.ts
@@ -0,0 +1,9 @@
+// vim: set tw=80 ts=2 sw=2 sts=2 :
+
+export class DailyBalance {
+    public operation_date: string;
+    public expenses: number;
+    public revenues: number;
+    public income: number;
+    public balance: number;
+}