diff --git a/snapcraft/application.py b/snapcraft/application.py
index b65fea747d..2ce8942361 100644
--- a/snapcraft/application.py
+++ b/snapcraft/application.py
@@ -84,6 +84,19 @@ def _get_esm_error_for_base(base: str) -> None:
     )
 
 
+def _get_base_warning_for_base(base: str) -> None:
+    """Emit a warning to use Snapcraft 9.x for core22, core24, and core26 bases."""
+    match base:
+        case "core22" | "core24" | "core26":
+            emit.warning(
+                f"Base {base!r} is supported in Snapcraft 9.x. "
+                "It is recommended to upgrade to Snapcraft 9.x via the 'latest/stable' channel "
+                "to benefit from the latest bug fixes and performance improvements."
+            )
+        case _:
+            return
+
+
 class Snapcraft(Application):
     """Snapcraft application definition."""
 
@@ -174,6 +187,7 @@ def _pre_run(self, dispatcher: craft_cli.Dispatcher) -> None:
             )
             _get_esm_error_for_base(effective_base)
             self._ensure_remote_build_supported(effective_base)
+            _get_base_warning_for_base(effective_base)
 
         super()._pre_run(dispatcher)
 
diff --git a/tests/unit/test_application.py b/tests/unit/test_application.py
index 742b4f9ace..e2e0ba3ab1 100644
--- a/tests/unit/test_application.py
+++ b/tests/unit/test_application.py
@@ -418,6 +418,18 @@ def test_esm_pass(mocker, snapcraft_yaml, base):
         mock_dispatch.assert_called_once()
 
 
+@pytest.mark.parametrize("base", ["core22", "core24", "core26"])
+def test_get_base_warning_for_base_emits_message(emitter, base):
+    """Test that _get_base_warning_for_base emits the correct message for core22, core24, and core26."""
+    application._get_base_warning_for_base(base)
+
+    emitter.assert_warning(
+        f"Base {base!r} is supported in Snapcraft 9.x. "
+        "It is recommended to upgrade to Snapcraft 9.x via the 'latest/stable' channel "
+        "to benefit from the latest bug fixes and performance improvements."
+    )
+
+
 def test_yaml_syntax_error(in_project_path, monkeypatch, capsys):
     """Provide a user friendly error on yaml syntax errors."""
     (in_project_path / "snapcraft.yaml").write_text("bad:\nyaml")