diff --git a/frontend/messages/de.json b/frontend/messages/de.json
index 427baf85..3cf6c8c9 100644
--- a/frontend/messages/de.json
+++ b/frontend/messages/de.json
@@ -604,6 +604,7 @@
 	"admin_tag_delete_only_this_sub_root": "Untergeordnete werden zu Root-Schlagwörtern",
 	"admin_tag_delete_subtree": "Gesamten Teilbaum löschen",
 	"admin_tag_delete_subtree_warn": "Löscht auch {count} untergeordnete Schlagwörter",
+	"admin_tag_delete_subtree_confirm_btn": "Teilbaum löschen",
 	"admin_tag_delete_confirm_heading": "Gib «{name}» zur Bestätigung ein:",
 	"filter_operator_and": "UND",
 	"filter_operator_or": "ODER",
diff --git a/frontend/messages/en.json b/frontend/messages/en.json
index fdc835e2..983880b0 100644
--- a/frontend/messages/en.json
+++ b/frontend/messages/en.json
@@ -604,6 +604,7 @@
 	"admin_tag_delete_only_this_sub_root": "Children will become root tags",
 	"admin_tag_delete_subtree": "Delete entire subtree",
 	"admin_tag_delete_subtree_warn": "Also deletes {count} child tags",
+	"admin_tag_delete_subtree_confirm_btn": "Delete subtree",
 	"admin_tag_delete_confirm_heading": "Type «{name}» to confirm:",
 	"filter_operator_and": "AND",
 	"filter_operator_or": "OR",
diff --git a/frontend/messages/es.json b/frontend/messages/es.json
index 04180d98..cfe3c850 100644
--- a/frontend/messages/es.json
+++ b/frontend/messages/es.json
@@ -604,6 +604,7 @@
 	"admin_tag_delete_only_this_sub_root": "Las subordinadas se convertirán en etiquetas raíz",
 	"admin_tag_delete_subtree": "Eliminar todo el subárbol",
 	"admin_tag_delete_subtree_warn": "También elimina {count} etiquetas subordinadas",
+	"admin_tag_delete_subtree_confirm_btn": "Eliminar subárbol",
 	"admin_tag_delete_confirm_heading": "Escribe «{name}» para confirmar:",
 	"filter_operator_and": "Y",
 	"filter_operator_or": "O",
diff --git a/frontend/src/routes/admin/tags/[id]/TagDeleteGuard.svelte b/frontend/src/routes/admin/tags/[id]/TagDeleteGuard.svelte
index 9238e769..f3d9498f 100644
--- a/frontend/src/routes/admin/tags/[id]/TagDeleteGuard.svelte
+++ b/frontend/src/routes/admin/tags/[id]/TagDeleteGuard.svelte
@@ -91,10 +91,11 @@ const descendantCount = $derived.by(() => {
 		<input type="hidden" name="deleteMode" value={selectedMode ?? ''} />
 		<button
 			type="submit"
+			data-testid="delete-submit-btn"
 			disabled={!canDelete}
 			class="rounded-sm bg-danger px-4 py-2 font-sans text-xs font-bold tracking-widest text-danger-fg uppercase transition-opacity hover:opacity-80 disabled:cursor-not-allowed disabled:opacity-40"
 		>
-			{m.btn_delete()}
+			{selectedMode === 'subtree' ? m.admin_tag_delete_subtree_confirm_btn() : m.btn_delete()}
 		</button>
 	</form>
 </div>
diff --git a/frontend/src/routes/admin/tags/[id]/TagDeleteGuard.svelte.spec.ts b/frontend/src/routes/admin/tags/[id]/TagDeleteGuard.svelte.spec.ts
index 3f8565b0..86abf0aa 100644
--- a/frontend/src/routes/admin/tags/[id]/TagDeleteGuard.svelte.spec.ts
+++ b/frontend/src/routes/admin/tags/[id]/TagDeleteGuard.svelte.spec.ts
@@ -23,22 +23,27 @@ describe('TagDeleteGuard', () => {
 
 	it('delete button is disabled initially', async () => {
 		render(TagDeleteGuard, { tag, allTags });
-		const btn = document.querySelector<HTMLButtonElement>('button[type="submit"]');
-		expect(btn?.disabled).toBe(true);
+		await expect.element(page.getByTestId('delete-submit-btn')).toBeDisabled();
 	});
 
 	it('delete button is enabled after selecting single radio', async () => {
 		render(TagDeleteGuard, { tag, allTags });
 		await page.getByRole('radio', { name: /Nur dieses/i }).click();
-		const btn = document.querySelector<HTMLButtonElement>('button[type="submit"]');
-		expect(btn?.disabled).toBe(false);
+		await expect.element(page.getByTestId('delete-submit-btn')).not.toBeDisabled();
 	});
 
 	it('delete button is enabled after selecting subtree radio', async () => {
 		render(TagDeleteGuard, { tag, allTags });
 		await page.getByRole('radio', { name: /Gesamten Teilbaum/i }).click();
-		const btn = document.querySelector<HTMLButtonElement>('button[type="submit"]');
-		expect(btn?.disabled).toBe(false);
+		await expect.element(page.getByTestId('delete-submit-btn')).not.toBeDisabled();
+	});
+
+	it('delete button shows subtree-specific text when subtree mode is selected', async () => {
+		render(TagDeleteGuard, { tag, allTags });
+		await page.getByRole('radio', { name: /Gesamten Teilbaum/i }).click();
+		await expect
+			.element(page.getByTestId('delete-submit-btn'))
+			.toHaveTextContent(/Teilbaum löschen/i);
 	});
 
 	it('shows descendant count in impact summary', async () => {