diff --git a/backend/api/v1/modules/core/auth/routes.py b/backend/api/v1/modules/core/auth/routes.py
index 7473724..5c54780 100644
--- a/backend/api/v1/modules/core/auth/routes.py
+++ b/backend/api/v1/modules/core/auth/routes.py
@@ -431,32 +431,61 @@ async def get_my_companies(
         _ensure_user_tenant_for_company,
     )
     from api.v1.modules.core.tenants.models import Tenant
+    from sqlalchemy import text
+    import logging as _logging
+
+    _log = _logging.getLogger(__name__)
 
     tenant_id = resolve_effective_tenant_id_from_user(current_user)
     if not tenant_id:
+        # Usuario sin tenant (p. ej. hub_admin global): no hay compañía que resolver.
         return []
+    tenant_id = int(tenant_id)
 
-    tenant = db.query(Tenant).filter(Tenant.id == int(tenant_id)).first()
-    name = (
-        (tenant.name if tenant else None)
-        or current_user.get("tenant_slug")
-        or "Mi empresa"
-    )
+    # La compañía es una entidad REAL del CRM (a76.company, heredada de Anexo76).
+    # Se listan las compañías del tenant; si no hay ninguna, se crea una por defecto
+    # en el primer acceso (nombre = el del tenant).
+    rows = db.execute(
+        text("SELECT id, name, rfc, logo FROM a76.company WHERE tenant_id = :tid ORDER BY id"),
+        {"tid": tenant_id},
+    ).fetchall()
 
-    # Garantizar el vínculo usuario↔tenant↔company (company_id = tenant_id).
+    if not rows:
+        tenant = db.query(Tenant).filter(Tenant.id == tenant_id).first()
+        default_name = (
+            (tenant.name if tenant else None)
+            or current_user.get("tenant_slug")
+            or "Mi empresa"
+        )
+        created = db.execute(
+            text(
+                "INSERT INTO a76.company (tenant_id, name) VALUES (:tid, :name) "
+                "RETURNING id, name, rfc, logo"
+            ),
+            {"tid": tenant_id, "name": default_name},
+        ).fetchone()
+        # Alinear la secuencia por si hubo inserts con id explícito (seed dev).
+        db.execute(text("SELECT setval('a76.company_id_seq', (SELECT MAX(id) FROM a76.company))"))
+        db.commit()
+        rows = [created]
+        _log.info("Compañía por defecto creada para tenant=%s: id=%s", tenant_id, created[0])
+
+    # Asegurar el vínculo usuario↔compañía por cada compañía del tenant.
     user_id = current_user.get("sub") or current_user.get("id")
-    if user_id:
-        try:
-            _ensure_user_tenant_for_company(db, str(user_id), int(tenant_id), int(tenant_id))
-        except Exception as exc:
-            logger = __import__("logging").getLogger(__name__)
-            logger.warning("no se pudo asegurar user_tenant (no bloquea): %s", exc)
-
-    return [{
-        "id": int(tenant_id),
-        "name": name,
-        "tenant_id": int(tenant_id),
-        "rfc": None,
-        "logo": None,
-        "is_active": True,
-    }]
+    companies = []
+    for r in rows:
+        cid = int(r[0])
+        if user_id:
+            try:
+                _ensure_user_tenant_for_company(db, str(user_id), tenant_id, cid)
+            except Exception as exc:
+                _log.warning("no se pudo asegurar user_tenant (no bloquea): %s", exc)
+        companies.append({
+            "id": cid,
+            "name": r[1] or "Mi empresa",
+            "tenant_id": tenant_id,
+            "rfc": r[2],
+            "logo": r[3],
+            "is_active": True,
+        })
+    return companies