From 9c31b749d71ea5e426ed4ff9816dbc6b1cc3ddf4 Mon Sep 17 00:00:00 2001
From: Bram Kragten <mail@bramkragten.nl>
Date: Wed, 28 Jul 2021 18:34:03 +0200
Subject: [PATCH] Format monetary sensor as currency (#9633)

---
 src/common/entity/compute_state_display.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/common/entity/compute_state_display.ts b/src/common/entity/compute_state_display.ts
index c5eb00c2d7..cb31f5ec10 100644
--- a/src/common/entity/compute_state_display.ts
+++ b/src/common/entity/compute_state_display.ts
@@ -21,6 +21,16 @@ export const computeStateDisplay = (
   }
 
   if (stateObj.attributes.unit_of_measurement) {
+    if (stateObj.attributes.device_class === "monetary") {
+      try {
+        return formatNumber(compareState, locale, {
+          style: "currency",
+          currency: stateObj.attributes.unit_of_measurement,
+        });
+      } catch (_err) {
+        // fallback to default
+      }
+    }
     return `${formatNumber(compareState, locale)} ${
       stateObj.attributes.unit_of_measurement
     }`;