diff --git a/homeassistant/components/vicare/__init__.py b/homeassistant/components/vicare/__init__.py
index eedeffea9378..295e8ab734f1 100644
--- a/homeassistant/components/vicare/__init__.py
+++ b/homeassistant/components/vicare/__init__.py
@@ -11,6 +11,7 @@ from PyViCare.PyViCareOAuthManager import obtain_token_via_basic_auth_pkce
 from PyViCare.PyViCareUtils import (
     PyViCareInvalidConfigurationError,
     PyViCareInvalidCredentialsError,
+    PyViCareRateLimitError,
 )
 
 from homeassistant.components.application_credentials import (
@@ -169,6 +170,11 @@ async def async_setup_entry(hass: HomeAssistant, entry: ViCareConfigEntry) -> bo
         PyViCareInvalidCredentialsError,
     ) as err:
         raise ConfigEntryAuthFailed("Authentication failed") from err
+    except PyViCareRateLimitError as err:
+        # The quota recovers on its own.
+        raise ConfigEntryNotReady(
+            f"ViCare API rate limit exceeded, resets at {err.limitResetDate}"
+        ) from err
 
     device_count = len(entry.runtime_data.devices)
     coordinators: list[ViCareCoordinator] = []
diff --git a/tests/components/vicare/test_init.py b/tests/components/vicare/test_init.py
index 10f370691e50..e938a5906352 100644
--- a/tests/components/vicare/test_init.py
+++ b/tests/components/vicare/test_init.py
@@ -11,6 +11,7 @@ from PyViCare.PyViCareUtils import (
     PyViCareInvalidConfigurationError,
     PyViCareInvalidCredentialsError,
     PyViCareInvalidDataError,
+    PyViCareRateLimitError,
 )
 
 from homeassistant.components.vicare.const import DOMAIN
@@ -329,6 +330,42 @@ async def test_setup_entry_invalid_credentials(
     assert mock_config_entry.state is ConfigEntryState.SETUP_ERROR
 
 
+async def test_setup_entry_rate_limited(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test setup retries when the daily API quota is spent."""
+    mock_config_entry.add_to_hass(hass)
+
+    rate_limit_error = PyViCareRateLimitError(
+        {
+            "extendedPayload": {
+                "name": "development portal",
+                "requestCountLimit": 1450,
+                "limitReset": 1757376004000,
+            }
+        }
+    )
+
+    with (
+        patch(
+            "homeassistant.helpers.config_entry_oauth2_flow.OAuth2Session.async_ensure_token_valid",
+        ),
+        patch(
+            f"{MODULE}._setup_vicare_api",
+            side_effect=rate_limit_error,
+        ) as setup_api,
+    ):
+        await hass.config_entries.async_setup(mock_config_entry.entry_id)
+        await hass.async_block_till_done()
+
+    setup_api.assert_called_once()
+    assert mock_config_entry.state is ConfigEntryState.SETUP_RETRY
+    # SETUP_RETRY alone would also match an unrelated ConfigEntryNotReady.
+    assert "rate limit" in mock_config_entry.reason
+    assert str(rate_limit_error.limitResetDate) in mock_config_entry.reason
+
+
 async def test_setup_entry_invalid_configuration(
     hass: HomeAssistant,
     mock_config_entry: MockConfigEntry,