diff --git a/src/cascadia/TerminalApp/CommandPalette.cpp b/src/cascadia/TerminalApp/CommandPalette.cpp
index fbf4a4e246..ab4bbf3b32 100644
--- a/src/cascadia/TerminalApp/CommandPalette.cpp
+++ b/src/cascadia/TerminalApp/CommandPalette.cpp
@@ -530,6 +530,15 @@ namespace winrt::TerminalApp::implementation
         // which will cause us to refresh the list of filterable commands.
         _searchBox().Text(L"");
         _searchBox().Focus(FocusState::Programmatic);
+
+        if (auto automationPeer{ Automation::Peers::FrameworkElementAutomationPeer::FromElement(_searchBox()) })
+        {
+            automationPeer.RaiseNotificationEvent(
+                Automation::Peers::AutomationNotificationKind::ActionCompleted,
+                Automation::Peers::AutomationNotificationProcessing::CurrentThenMostRecent,
+                fmt::format(std::wstring_view{ RS_(L"CommandPalette_NestedCommandAnnouncement") }, ParentCommandName()),
+                L"CommandPaletteNestingLevelChanged" /* unique name for this notification category */);
+        }
     }
 
     // Method Description:
@@ -768,7 +777,19 @@ namespace winrt::TerminalApp::implementation
 
         if (_currentMode == CommandPaletteMode::TabSearchMode || _currentMode == CommandPaletteMode::ActionMode)
         {
-            _noMatchesText().Visibility(_filteredActions.Size() > 0 ? Visibility::Collapsed : Visibility::Visible);
+            const auto currentNeedleHasResults{ _filteredActions.Size() > 0 };
+            _noMatchesText().Visibility(currentNeedleHasResults ? Visibility::Collapsed : Visibility::Visible);
+            if (!currentNeedleHasResults)
+            {
+                if (auto automationPeer{ Automation::Peers::FrameworkElementAutomationPeer::FromElement(_searchBox()) })
+                {
+                    automationPeer.RaiseNotificationEvent(
+                        Automation::Peers::AutomationNotificationKind::ActionCompleted,
+                        Automation::Peers::AutomationNotificationProcessing::ImportantMostRecent,
+                        NoMatchesText(), // NoMatchesText contains the right text for the current mode
+                        L"CommandPaletteResultAnnouncement" /* unique name for this notification */);
+                }
+            }
         }
         else
         {
@@ -897,6 +918,9 @@ namespace winrt::TerminalApp::implementation
     {
         _currentMode = mode;
 
+        const auto currentlyVisible{ Visibility() == Visibility::Visible };
+
+        auto modeAnnouncementResourceKey{ USES_RESOURCE(L"CommandPaletteModeAnnouncement_ActionMode") };
         ParsedCommandLineText(L"");
         _searchBox().Text(L"");
         _searchBox().Select(_searchBox().Text().size(), 0);
@@ -912,6 +936,7 @@ namespace winrt::TerminalApp::implementation
             NoMatchesText(RS_(L"TabSwitcher_NoMatchesText"));
             ControlName(RS_(L"TabSwitcherControlName"));
             PrefixCharacter(L"");
+            modeAnnouncementResourceKey = USES_RESOURCE(L"CommandPaletteModeAnnouncement_TabSearchSwitchMode");
             break;
         }
         case CommandPaletteMode::CommandlineMode:
@@ -919,6 +944,7 @@ namespace winrt::TerminalApp::implementation
             NoMatchesText(L"");
             ControlName(RS_(L"CommandPaletteControlName"));
             PrefixCharacter(L"");
+            modeAnnouncementResourceKey = USES_RESOURCE(L"CommandPaletteModeAnnouncement_CommandlineMode");
             break;
         case CommandPaletteMode::ActionMode:
         default:
@@ -926,9 +952,23 @@ namespace winrt::TerminalApp::implementation
             NoMatchesText(RS_(L"CommandPalette_NoMatchesText/Text"));
             ControlName(RS_(L"CommandPaletteControlName"));
             PrefixCharacter(L">");
+            // modeAnnouncementResourceKey is already set to _ActionMode
+            // We did this above to deduce the type (and make it easier on ourselves later).
             break;
         }
 
+        if (currentlyVisible)
+        {
+            if (auto automationPeer{ Automation::Peers::FrameworkElementAutomationPeer::FromElement(_searchBox()) })
+            {
+                automationPeer.RaiseNotificationEvent(
+                    Automation::Peers::AutomationNotificationKind::ActionCompleted,
+                    Automation::Peers::AutomationNotificationProcessing::CurrentThenMostRecent,
+                    GetLibraryResourceString(modeAnnouncementResourceKey),
+                    L"CommandPaletteModeSwitch" /* unique ID for this notification */);
+            }
+        }
+
         // The smooth remove/add animations that happen during
         // UpdateFilteredActions don't work very well when switching between
         // modes because of the sheer amount of remove/adds. So, let's just
diff --git a/src/cascadia/TerminalApp/Resources/en-US/Resources.resw b/src/cascadia/TerminalApp/Resources/en-US/Resources.resw
index 21c7bd4013..51b011c464 100644
--- a/src/cascadia/TerminalApp/Resources/en-US/Resources.resw
+++ b/src/cascadia/TerminalApp/Resources/en-US/Resources.resw
@@ -459,6 +459,22 @@
   <data name="CommandPalette_NoMatchesText.Text" xml:space="preserve">
     <value>No matching commands</value>
   </data>
+  <data name="CommandPaletteModeAnnouncement_ActionMode" xml:space="preserve">
+    <value>Action search mode</value>
+    <comment>This text will be read aloud using assistive technologies when the command palette switches into action (command search) mode.</comment>
+  </data>
+  <data name="CommandPaletteModeAnnouncement_TabSearchSwitchMode" xml:space="preserve">
+    <value>Tab title mode</value>
+    <comment>This text will be read aloud using assistive technologies when the command palette switches into a mode that filters tab names.</comment>
+  </data>
+  <data name="CommandPaletteModeAnnouncement_CommandlineMode" xml:space="preserve">
+    <value>Command-line mode</value>
+    <comment>This text will be read aloud using assistive technologies when the command palette switches into the raw commandline parsing mode.</comment>
+  </data>
+  <data name="CommandPalette_NestedCommandAnnouncement" xml:space="preserve">
+    <value>More options for "{}"</value>
+    <comment>This text will be read aloud using assistive technologies when the user selects a command that has additional options. The {} will be expanded to the name of the command containing more options.</comment>
+  </data>
   <data name="CommandPalette_ParsedCommandLine" xml:space="preserve">
     <value>Executing command line will invoke the following commands:</value>
     <comment>Will be followed by a list of strings describing parsed commands</comment>
diff --git a/src/cascadia/TerminalApp/pch.h b/src/cascadia/TerminalApp/pch.h
index 5e23b3df6c..f2c5663525 100644
--- a/src/cascadia/TerminalApp/pch.h
+++ b/src/cascadia/TerminalApp/pch.h
@@ -46,6 +46,7 @@
 #include "winrt/Windows.UI.Xaml.Markup.h"
 #include "winrt/Windows.UI.Xaml.Documents.h"
 #include "winrt/Windows.UI.Xaml.Automation.h"
+#include "winrt/Windows.UI.Xaml.Automation.Peers.h"
 #include "winrt/Windows.UI.ViewManagement.h"
 #include <winrt/Windows.ApplicationModel.h>
 #include <winrt/Windows.ApplicationModel.DataTransfer.h>