diff --git a/homeassistant/components/remote_calendar/config_flow.py b/homeassistant/components/remote_calendar/config_flow.py
index 1ceeb7a3937..cc9f45e2767 100644
--- a/homeassistant/components/remote_calendar/config_flow.py
+++ b/homeassistant/components/remote_calendar/config_flow.py
@@ -1,5 +1,6 @@
 """Config flow for Remote Calendar integration."""
 
+from http import HTTPStatus
 import logging
 from typing import Any
 
@@ -50,6 +51,13 @@ class RemoteCalendarConfigFlow(ConfigFlow, domain=DOMAIN):
         client = get_async_client(self.hass)
         try:
             res = await client.get(user_input[CONF_URL], follow_redirects=True)
+            if res.status_code == HTTPStatus.FORBIDDEN:
+                errors["base"] = "forbidden"
+                return self.async_show_form(
+                    step_id="user",
+                    data_schema=STEP_USER_DATA_SCHEMA,
+                    errors=errors,
+                )
             res.raise_for_status()
         except (HTTPError, InvalidURL) as err:
             errors["base"] = "cannot_connect"
diff --git a/homeassistant/components/remote_calendar/strings.json b/homeassistant/components/remote_calendar/strings.json
index 1ad62821818..fff2d4abbb3 100644
--- a/homeassistant/components/remote_calendar/strings.json
+++ b/homeassistant/components/remote_calendar/strings.json
@@ -19,6 +19,7 @@
     },
     "error": {
       "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
+      "forbidden": "The server understood the request but refuses to authorize it.",
       "invalid_ics_file": "[%key:component::local_calendar::config::error::invalid_ics_file%]"
     }
   },
diff --git a/tests/components/remote_calendar/test_config_flow.py b/tests/components/remote_calendar/test_config_flow.py
index 9eb9cb40134..9aff1594db3 100644
--- a/tests/components/remote_calendar/test_config_flow.py
+++ b/tests/components/remote_calendar/test_config_flow.py
@@ -165,8 +165,17 @@ async def test_unsupported_inputs(
     ## and then the exception isn't raised anymore.
 
 
+@pytest.mark.parametrize(
+    ("http_status", "error"),
+    [
+        (401, "cannot_connect"),
+        (403, "forbidden"),
+    ],
+)
 @respx.mock
-async def test_form_http_status_error(hass: HomeAssistant, ics_content: str) -> None:
+async def test_form_http_status_error(
+    hass: HomeAssistant, ics_content: str, http_status: int, error: str
+) -> None:
     """Test we http status."""
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": SOURCE_USER}
@@ -174,7 +183,7 @@ async def test_form_http_status_error(hass: HomeAssistant, ics_content: str) ->
     assert result["type"] is FlowResultType.FORM
     respx.get(CALENDER_URL).mock(
         return_value=Response(
-            status_code=403,
+            status_code=http_status,
         )
     )
 
@@ -186,7 +195,7 @@ async def test_form_http_status_error(hass: HomeAssistant, ics_content: str) ->
         },
     )
     assert result2["type"] is FlowResultType.FORM
-    assert result2["errors"] == {"base": "cannot_connect"}
+    assert result2["errors"] == {"base": error}
     respx.get(CALENDER_URL).mock(
         return_value=Response(
             status_code=200,