diff --git a/app/assets/javascripts/discourse/app/components/sidebar/tags-form-modal.hbs b/app/assets/javascripts/discourse/app/components/sidebar/tags-form-modal.hbs
index cdaaf57c045..e1e7e8dbe47 100644
--- a/app/assets/javascripts/discourse/app/components/sidebar/tags-form-modal.hbs
+++ b/app/assets/javascripts/discourse/app/components/sidebar/tags-form-modal.hbs
@@ -1,3 +1,16 @@
+{{#in-element this.modalHeaderAfterTitleElement}}
+  <p class="sidebar-tags-form__deselect">
+    <DButton
+      @class="btn-flat sidebar-tags-form__deselect-all-btn"
+      @label="sidebar.tags_form_modal.subtitle.button_text"
+      @ariaLabel="sidebar.tags_form_modal.subtitle.button_text"
+      @action={{this.deselectAll}}
+    />
+
+    {{i18n "sidebar.tags_form_modal.subtitle.text"}}
+  </p>
+{{/in-element}}
+
 <DModalBody
   @title="sidebar.tags_form_modal.title"
   @class="sidebar-tags-form-modal"
@@ -54,11 +67,22 @@
   </form>
 </DModalBody>
 
-<div class="modal-footer">
+<div class="modal-footer sidebar-tags-form__modal-footer">
   <DButton
     @class="btn-primary sidebar-tags-form__save-button"
     @label="save"
     @disabled={{this.saving}}
     @action={{this.save}}
   />
+
+  {{#if (gt this.siteSettings.default_navigation_menu_tags.length 0)}}
+    <DButton
+      @icon="undo"
+      @class="btn-flat btn-text sidebar-tags-form__reset-to-defaults-btn"
+      @label="sidebar.tags_form_modal.reset_to_defaults"
+      @disabled={{this.saving}}
+      @action={{this.resetToDefaults}}
+    />
+  {{/if}}
+
 </div>
\ No newline at end of file
diff --git a/app/assets/javascripts/discourse/app/components/sidebar/tags-form-modal.js b/app/assets/javascripts/discourse/app/components/sidebar/tags-form-modal.js
index ee52a423f45..3f027f74b88 100644
--- a/app/assets/javascripts/discourse/app/components/sidebar/tags-form-modal.js
+++ b/app/assets/javascripts/discourse/app/components/sidebar/tags-form-modal.js
@@ -9,6 +9,7 @@ import discourseDebounce from "discourse-common/lib/debounce";
 
 export default class extends Component {
   @service currentUser;
+  @service siteSettings;
   @service store;
 
   @tracked filter = "";
@@ -52,6 +53,10 @@ export default class extends Component {
     }
   }
 
+  get modalHeaderAfterTitleElement() {
+    return document.getElementById("modal-header-after-title");
+  }
+
   @action
   onFilterInput(filter) {
     discourseDebounce(this, this.#performFiltering, filter, INPUT_DELAY);
@@ -61,6 +66,17 @@ export default class extends Component {
     this.filter = filter.toLowerCase();
   }
 
+  @action
+  deselectAll() {
+    this.selectedTags.clear();
+  }
+
+  @action
+  resetToDefaults() {
+    this.selectedTags =
+      this.siteSettings.default_navigation_menu_tags.split("|");
+  }
+
   @action
   toggleTag(tag) {
     if (this.selectedTags.includes(tag)) {
diff --git a/app/assets/stylesheets/common/components/sidebar-tags-form.scss b/app/assets/stylesheets/common/components/sidebar-tags-form.scss
index 12cb5790d1c..972a444189e 100644
--- a/app/assets/stylesheets/common/components/sidebar-tags-form.scss
+++ b/app/assets/stylesheets/common/components/sidebar-tags-form.scss
@@ -60,3 +60,34 @@
     }
   }
 }
+
+.sidebar-tags-form__modal-footer.modal-footer {
+  .sidebar-tags-form__reset-to-defaults-btn {
+    margin-left: auto;
+    margin-right: 0em;
+
+    .d-icon {
+      font-size: var(--font-down-1);
+      color: var(--tertiary);
+    }
+
+    &:focus,
+    &:active {
+      background: none;
+    }
+  }
+}
+
+.sidebar-tags-form__deselect {
+  margin: 0;
+
+  .btn-flat.sidebar-tags-form__deselect-all-btn {
+    margin-left: auto;
+    padding: 0;
+
+    &:focus,
+    &:active {
+      background: none;
+    }
+  }
+}
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index e96af115268..7279ae28ad4 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -4401,6 +4401,10 @@ en:
         title: "Edit tags navigation"
         filter_placeholder: "Filter tags"
         no_tags: "There are no tags matching the given term."
+        subtitle:
+          button_text: "Deselect all"
+          text: "and we'll automatically show this site's top tags"
+        reset_to_defaults: "Reset to defaults"
 
       sections:
         custom:
diff --git a/spec/system/editing_sidebar_tags_navigation_spec.rb b/spec/system/editing_sidebar_tags_navigation_spec.rb
index 5ec9800363d..131153197ac 100644
--- a/spec/system/editing_sidebar_tags_navigation_spec.rb
+++ b/spec/system/editing_sidebar_tags_navigation_spec.rb
@@ -3,9 +3,18 @@
 RSpec.describe "Editing sidebar tags navigation", type: :system do
   fab!(:user) { Fabricate(:user) }
   fab!(:group) { Fabricate(:group).tap { |g| g.add(user) } }
-  fab!(:tag) { Fabricate(:tag, name: "tag", public_topic_count: 1, staff_topic_count: 1) }
-  fab!(:tag2) { Fabricate(:tag, name: "tag2", public_topic_count: 2, staff_topic_count: 2) }
-  fab!(:tag3) { Fabricate(:tag, name: "tag3", public_topic_count: 3, staff_topic_count: 3) }
+  fab!(:tag1) { Fabricate(:tag, name: "tag").tap { |tag| Fabricate.times(3, :topic, tags: [tag]) } }
+
+  fab!(:tag2) do
+    Fabricate(:tag, name: "tag2").tap { |tag| Fabricate.times(2, :topic, tags: [tag]) }
+  end
+
+  fab!(:tag3) do
+    Fabricate(:tag, name: "tag3").tap { |tag| Fabricate.times(1, :topic, tags: [tag]) }
+  end
+
+  # This tag should not be displayed in the modal as it has not been used in a topic
+  fab!(:tag4) { Fabricate(:tag, name: "tag4") }
 
   let(:sidebar) { PageObjects::Components::Sidebar.new }
 
@@ -18,25 +27,25 @@ RSpec.describe "Editing sidebar tags navigation", type: :system do
     visit "/latest"
 
     expect(sidebar).to have_tags_section
-    expect(sidebar).to have_no_section_link(tag.name)
-    expect(sidebar).to have_no_section_link(tag2.name)
-    expect(sidebar).to have_no_section_link(tag3.name)
+    expect(sidebar).to have_section_link(tag1.name)
+    expect(sidebar).to have_section_link(tag2.name)
+    expect(sidebar).to have_section_link(tag3.name)
 
     modal = sidebar.click_edit_tags_button
 
     expect(modal).to have_right_title(I18n.t("js.sidebar.tags_form_modal.title"))
-    expect(modal).to have_tag_checkboxes([tag, tag2, tag3])
+    expect(modal).to have_tag_checkboxes([tag1, tag2, tag3])
 
-    modal.toggle_tag_checkbox(tag).toggle_tag_checkbox(tag2).save
+    modal.toggle_tag_checkbox(tag1).toggle_tag_checkbox(tag2).save
 
     expect(modal).to be_closed
-    expect(sidebar).to have_section_link(tag.name)
+    expect(sidebar).to have_section_link(tag1.name)
     expect(sidebar).to have_section_link(tag2.name)
     expect(sidebar).to have_no_section_link(tag3.name)
 
     visit "/latest"
 
-    expect(sidebar).to have_section_link(tag.name)
+    expect(sidebar).to have_section_link(tag1.name)
     expect(sidebar).to have_section_link(tag2.name)
     expect(sidebar).to have_no_section_link(tag3.name)
 
@@ -45,7 +54,7 @@ RSpec.describe "Editing sidebar tags navigation", type: :system do
 
     expect(modal).to be_closed
 
-    expect(sidebar).to have_section_link(tag.name)
+    expect(sidebar).to have_section_link(tag1.name)
     expect(sidebar).to have_no_section_link(tag2.name)
     expect(sidebar).to have_no_section_link(tag3.name)
   end
@@ -59,7 +68,7 @@ RSpec.describe "Editing sidebar tags navigation", type: :system do
 
     modal.filter("tag")
 
-    expect(modal).to have_tag_checkboxes([tag, tag2, tag3])
+    expect(modal).to have_tag_checkboxes([tag1, tag2, tag3])
 
     modal.filter("tag2")
 
@@ -69,4 +78,43 @@ RSpec.describe "Editing sidebar tags navigation", type: :system do
 
     expect(modal).to have_no_tag_checkboxes
   end
+
+  it "allows a user to deselect all tags in the modal which will display the site's top tags" do
+    Fabricate(:tag_sidebar_section_link, user: user, linkable: tag1)
+
+    visit "/latest"
+
+    expect(sidebar).to have_tags_section
+    expect(sidebar).to have_section_link(tag1.name)
+    expect(sidebar).to have_no_section_link(tag2.name)
+    expect(sidebar).to have_no_section_link(tag3.name)
+
+    modal = sidebar.click_edit_tags_button
+    modal.deselect_all.save
+
+    expect(sidebar).to have_section_link(tag1.name)
+    expect(sidebar).to have_section_link(tag2.name)
+    expect(sidebar).to have_section_link(tag3.name)
+  end
+
+  it "allows a user to reset to the default navigation menu tags site setting" do
+    Fabricate(:tag_sidebar_section_link, user: user, linkable: tag1)
+
+    SiteSetting.default_navigation_menu_tags = "#{tag2.name}|#{tag3.name}"
+
+    visit "/latest"
+
+    expect(sidebar).to have_tags_section
+    expect(sidebar).to have_section_link(tag1.name)
+    expect(sidebar).to have_no_section_link(tag2.name)
+    expect(sidebar).to have_no_section_link(tag3.name)
+
+    modal = sidebar.click_edit_tags_button
+    modal.click_reset_to_defaults_button.save
+
+    expect(modal).to be_closed
+    expect(sidebar).to have_no_section_link(tag1.name)
+    expect(sidebar).to have_section_link(tag2.name)
+    expect(sidebar).to have_section_link(tag3.name)
+  end
 end
diff --git a/spec/system/page_objects/modals/sidebar_edit_tags.rb b/spec/system/page_objects/modals/sidebar_edit_tags.rb
index d3c078bd5c8..8355d5c210b 100644
--- a/spec/system/page_objects/modals/sidebar_edit_tags.rb
+++ b/spec/system/page_objects/modals/sidebar_edit_tags.rb
@@ -45,6 +45,16 @@ module PageObjects
         find(".sidebar-tags-form-modal .sidebar-tags-form__filter-input-field").fill_in(with: text)
         self
       end
+
+      def deselect_all
+        click_button(I18n.t("js.sidebar.tags_form_modal.subtitle.button_text"))
+        self
+      end
+
+      def click_reset_to_defaults_button
+        click_button(I18n.t("js.sidebar.tags_form_modal.reset_to_defaults"))
+        self
+      end
     end
   end
 end