diff --git a/src/web/src/pages/admin/audit/AuditFilters.tsx b/src/web/src/pages/admin/audit/AuditFilters.tsx
index f55cc9f..79e2f56 100644
--- a/src/web/src/pages/admin/audit/AuditFilters.tsx
+++ b/src/web/src/pages/admin/audit/AuditFilters.tsx
@@ -2,6 +2,7 @@ import { useState, type FormEvent } from 'react'
 import { Input } from '@/components/ui/input'
 import { Label } from '@/components/ui/label'
 import { Button } from '@/components/ui/button'
+import { parseArgentinaDateTimeToUtc } from '@/lib/dateFormat'
 
 /** Filtros crudos del form (todos strings para binding directo del input). */
 export interface AuditFiltersValue {
@@ -132,8 +133,8 @@ export function AuditFilters({
  * que espera el cliente de API.
  *
  * - `actor` vacío o NaN → omitido
- * - `from`/`to` vienen del `datetime-local` (local time, sin timezone).
- *   Los convertimos a ISO UTC vía `new Date(...).toISOString()`.
+ * - `from`/`to` vienen del `datetime-local` (hora ART implícita, sin timezone).
+ *   Los convertimos a ISO UTC vía `parseArgentinaDateTimeToUtc()` (fix BUG-FE-05).
  * - Strings vacíos → omitidos.
  */
 export function toApiFilter(
@@ -148,12 +149,11 @@ export function toApiFilter(
   if (value.targetType.trim() !== '') out.targetType = value.targetType.trim()
   if (value.targetId.trim() !== '') out.targetId = value.targetId.trim()
   if (value.from.trim() !== '') {
-    const d = new Date(value.from)
-    if (!Number.isNaN(d.getTime())) out.from = d.toISOString()
+    // BUG-FE-05: interpretar el string como ART (-03:00), no como local del browser
+    try { out.from = parseArgentinaDateTimeToUtc(value.from) } catch { /* invalid input */ }
   }
   if (value.to.trim() !== '') {
-    const d = new Date(value.to)
-    if (!Number.isNaN(d.getTime())) out.to = d.toISOString()
+    try { out.to = parseArgentinaDateTimeToUtc(value.to) } catch { /* invalid input */ }
   }
 
   return out