diff --git a/backend/internal/handler/admin/account_handler_list_test.go b/backend/internal/handler/admin/account_handler_list_test.go
new file mode 100644
index 00000000..4d628365
--- /dev/null
+++ b/backend/internal/handler/admin/account_handler_list_test.go
@@ -0,0 +1,52 @@
+package admin
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/require"
+)
+
+func setupAccountListRouter() (*gin.Engine, *stubAdminService) {
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	adminSvc := newStubAdminService()
+	handler := NewAccountHandler(adminSvc, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil)
+	router.GET("/api/v1/admin/accounts", handler.List)
+	return router, adminSvc
+}
+
+func TestAccountHandlerListIncludesCreatedAt(t *testing.T) {
+	router, adminSvc := setupAccountListRouter()
+
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/admin/accounts?page=1&page_size=20&sort_by=created_at&sort_order=desc", nil)
+	router.ServeHTTP(rec, req)
+
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.Equal(t, "created_at", adminSvc.lastListAccounts.sortBy)
+
+	var payload struct {
+		Data struct {
+			Items []struct {
+				ID        int64  `json:"id"`
+				CreatedAt string `json:"created_at"`
+			} `json:"items"`
+		} `json:"data"`
+	}
+	require.NoError(t, json.Unmarshal(rec.Body.Bytes(), &payload))
+	require.Len(t, payload.Data.Items, 1)
+
+	createdAt := payload.Data.Items[0].CreatedAt
+	require.NotEmpty(t, createdAt)
+	require.True(t, strings.HasSuffix(createdAt, "Z"), "created_at should be serialized as UTC")
+	parsed, err := time.Parse(time.RFC3339Nano, createdAt)
+	require.NoError(t, err)
+	_, offset := parsed.Zone()
+	require.Equal(t, 0, offset)
+}
diff --git a/frontend/src/i18n/locales/en.ts b/frontend/src/i18n/locales/en.ts
index 1e96159a..ff5ea651 100644
--- a/frontend/src/i18n/locales/en.ts
+++ b/frontend/src/i18n/locales/en.ts
@@ -3078,6 +3078,7 @@ export default {
         usageWindows: 'Usage Windows',
         proxy: 'Proxy',
         lastUsed: 'Last Used',
+        createdAt: 'Created',
         expiresAt: 'Expires At',
         actions: 'Actions'
       },
diff --git a/frontend/src/i18n/locales/zh.ts b/frontend/src/i18n/locales/zh.ts
index c316743a..b8ac7d2c 100644
--- a/frontend/src/i18n/locales/zh.ts
+++ b/frontend/src/i18n/locales/zh.ts
@@ -3116,6 +3116,7 @@ export default {
         usageWindows: '用量窗口',
         proxy: '代理',
         lastUsed: '最近使用',
+        createdAt: '创建时间',
         expiresAt: '过期时间',
         actions: '操作'
       },
diff --git a/frontend/src/views/admin/AccountsView.vue b/frontend/src/views/admin/AccountsView.vue
index 51137c8b..c602225c 100644
--- a/frontend/src/views/admin/AccountsView.vue
+++ b/frontend/src/views/admin/AccountsView.vue
@@ -301,6 +301,9 @@
           <template #cell-last_used_at="{ value }">
             <span class="text-sm text-gray-500 dark:text-dark-400">{{ formatRelativeTime(value) }}</span>
           </template>
+          <template #cell-created_at="{ value }">
+            <span class="text-sm text-gray-500 dark:text-dark-400">{{ formatDateTime(value) }}</span>
+          </template>
           <template #cell-expires_at="{ row, value }">
             <div class="flex flex-col items-start gap-1">
               <span class="text-sm text-gray-500 dark:text-dark-400">{{ formatExpiresAt(value) }}</span>
@@ -509,6 +512,7 @@ const ACCOUNT_SORTABLE_KEYS = new Set([
   'priority',
   'rate_multiplier',
   'last_used_at',
+  'created_at',
   'expires_at'
 ])
 const loadInitialAccountSortState = (): AccountSortState => {
@@ -1127,6 +1131,7 @@ const allColumns = computed(() => {
     { key: 'priority', label: t('admin.accounts.columns.priority'), sortable: true },
     { key: 'rate_multiplier', label: t('admin.accounts.columns.billingRateMultiplier'), sortable: true },
     { key: 'last_used_at', label: t('admin.accounts.columns.lastUsed'), sortable: true },
+    { key: 'created_at', label: t('admin.accounts.columns.createdAt'), sortable: true },
     { key: 'expires_at', label: t('admin.accounts.columns.expiresAt'), sortable: true },
     { key: 'notes', label: t('admin.accounts.columns.notes'), sortable: false },
     { key: 'actions', label: t('admin.accounts.columns.actions'), sortable: false }
diff --git a/frontend/src/views/admin/__tests__/AccountsView.bulkEdit.spec.ts b/frontend/src/views/admin/__tests__/AccountsView.bulkEdit.spec.ts
index 112baf22..ed53a9e5 100644
--- a/frontend/src/views/admin/__tests__/AccountsView.bulkEdit.spec.ts
+++ b/frontend/src/views/admin/__tests__/AccountsView.bulkEdit.spec.ts
@@ -63,7 +63,14 @@ vi.mock('vue-i18n', async () => {
 
 const DataTableStub = {
   props: ['columns', 'data'],
-  template: '<div data-test="data-table"></div>'
+  template: `
+    <div data-test="data-table">
+      <span v-for="column in columns" :key="column.key" data-test="column-key">{{ column.key }}</span>
+      <div v-for="row in data" :key="row.id">
+        <slot name="cell-created_at" :value="row.created_at" :row="row" />
+      </div>
+    </div>
+  `
 }
 
 const AccountBulkActionsBarStub = {
@@ -149,4 +156,72 @@ describe('admin AccountsView bulk edit scope', () => {
     expect(wrapper.get('[data-test="bulk-edit-modal"]').attributes('data-show')).toBe('true')
     expect(wrapper.get('[data-test="bulk-edit-modal"]').attributes('data-target-mode')).toBe('filtered')
   })
+
+  it('renders the created_at column by default', async () => {
+    listAccounts.mockResolvedValue({
+      items: [
+        {
+          id: 1,
+          name: 'test-account',
+          platform: 'anthropic',
+          type: 'oauth',
+          status: 'active',
+          schedulable: true,
+          created_at: '2026-03-07T10:00:00Z',
+          updated_at: '2026-03-07T10:00:00Z'
+        }
+      ],
+      total: 1,
+      page: 1,
+      page_size: 20,
+      pages: 1
+    })
+
+    const wrapper = mount(AccountsView, {
+      global: {
+        stubs: {
+          AppLayout: { template: '<div><slot /></div>' },
+          TablePageLayout: {
+            template: '<div><slot name="filters" /><slot name="table" /><slot name="pagination" /></div>'
+          },
+          DataTable: DataTableStub,
+          Pagination: true,
+          ConfirmDialog: true,
+          AccountTableActions: { template: '<div><slot name="beforeCreate" /><slot name="after" /></div>' },
+          AccountTableFilters: { template: '<div></div>' },
+          AccountBulkActionsBar: AccountBulkActionsBarStub,
+          AccountActionMenu: true,
+          ImportDataModal: true,
+          ReAuthAccountModal: true,
+          AccountTestModal: true,
+          AccountStatsModal: true,
+          ScheduledTestsPanel: true,
+          SyncFromCrsModal: true,
+          TempUnschedStatusModal: true,
+          ErrorPassthroughRulesModal: true,
+          TLSFingerprintProfilesModal: true,
+          CreateAccountModal: true,
+          EditAccountModal: true,
+          BulkEditAccountModal: BulkEditAccountModalStub,
+          PlatformTypeBadge: true,
+          AccountCapacityCell: true,
+          AccountStatusIndicator: true,
+          AccountTodayStatsCell: true,
+          AccountGroupsCell: true,
+          AccountUsageCell: true,
+          Icon: true
+        }
+      }
+    })
+
+    await flushPromises()
+
+    const columnKeys = wrapper.findAll('[data-test="column-key"]').map(node => node.text())
+    expect(columnKeys).toContain('created_at')
+    const columns = wrapper.getComponent(DataTableStub).props('columns') as Array<{ key: string; label: string; sortable: boolean }>
+    expect(columns.find(column => column.key === 'created_at')).toMatchObject({
+      label: 'admin.accounts.columns.createdAt',
+      sortable: true
+    })
+  })
 })