diff --git a/esphome/components/mqtt/mqtt_const.h b/esphome/components/mqtt/mqtt_const.h
index 221af00371..36a7dfb41a 100644
--- a/esphome/components/mqtt/mqtt_const.h
+++ b/esphome/components/mqtt/mqtt_const.h
@@ -243,6 +243,7 @@
   X(MQTT_STATE_VALUE_TEMPLATE, "stat_val_tpl", "state_value_template") \
   X(MQTT_STEP, "step", "step") \
   X(MQTT_SUBTYPE, "stype", "subtype") \
+  X(MQTT_SUGGESTED_DISPLAY_PRECISION, "sug_dsp_prc", "suggested_display_precision") \
   X(MQTT_SUPPORTED_COLOR_MODES, "sup_clrm", "supported_color_modes") \
   X(MQTT_SUPPORTED_FEATURES, "sup_feat", "supported_features") \
   X(MQTT_SWING_MODE_COMMAND_TEMPLATE, "swing_mode_cmd_tpl", "swing_mode_command_template") \
diff --git a/esphome/components/mqtt/mqtt_sensor.cpp b/esphome/components/mqtt/mqtt_sensor.cpp
index e83eab6732..a7d311d194 100644
--- a/esphome/components/mqtt/mqtt_sensor.cpp
+++ b/esphome/components/mqtt/mqtt_sensor.cpp
@@ -49,6 +49,10 @@ void MQTTSensorComponent::send_discovery(JsonObject root, mqtt::SendDiscoveryCon
     root[MQTT_DEVICE_CLASS] = device_class;
   }
 
+  if (this->sensor_->has_accuracy_decimals()) {
+    root[MQTT_SUGGESTED_DISPLAY_PRECISION] = this->sensor_->get_accuracy_decimals();
+  }
+
   const auto unit_of_measurement = this->sensor_->get_unit_of_measurement_ref();
   if (!unit_of_measurement.empty()) {
     root[MQTT_UNIT_OF_MEASUREMENT] = unit_of_measurement;
diff --git a/esphome/components/sensor/sensor.h b/esphome/components/sensor/sensor.h
index f9a45cb1d0..80981b8e28 100644
--- a/esphome/components/sensor/sensor.h
+++ b/esphome/components/sensor/sensor.h
@@ -48,6 +48,8 @@ class Sensor : public EntityBase, public EntityBase_DeviceClass, public EntityBa
   int8_t get_accuracy_decimals();
   /// Manually set the accuracy in decimals.
   void set_accuracy_decimals(int8_t accuracy_decimals);
+  /// Check if the accuracy in decimals has been manually set.
+  bool has_accuracy_decimals() const { return this->sensor_flags_.has_accuracy_override; }
 
   /// Get the state class, using the manual override if set.
   StateClass get_state_class();