diff --git a/src/routes/_authenticated/route.tsx b/src/routes/_authenticated/route.tsx
index c43a908..b2484f0 100644
--- a/src/routes/_authenticated/route.tsx
+++ b/src/routes/_authenticated/route.tsx
@@ -3,8 +3,22 @@ import { useAuth, highestRole } from "@/hooks/use-auth";
 import { supabase } from "@/integrations/supabase/client";
 import { Button } from "@/components/ui/button";
 import {
-  GraduationCap, LayoutDashboard, Users, ClipboardCheck, Receipt,
-  MessageSquare, FileText, CalendarDays, Settings, LogOut, Loader2, BookOpen, ClipboardList, Printer, Mail
+  GraduationCap,
+  LayoutDashboard,
+  Users,
+  ClipboardCheck,
+  Receipt,
+  MessageSquare,
+  FileText,
+  CalendarDays,
+  Settings,
+  LogOut,
+  Loader2,
+  BookOpen,
+  ClipboardList,
+  Printer,
+  Mail,
+  CreditCard,
 } from "lucide-react";
 import { useEffect } from "react";
 
@@ -23,7 +37,11 @@ function ProtectedLayout() {
   }, [loading, user, navigate]);
 
   if (loading || !user) {
-    return <div className="min-h-screen flex items-center justify-center"><Loader2 className="h-6 w-6 animate-spin text-muted-foreground" /></div>;
+    return (
+      <div className="min-h-screen flex items-center justify-center">
+        <Loader2 className="h-6 w-6 animate-spin text-muted-foreground" />
+      </div>
+    );
   }
 
   const role = highestRole(roles);
@@ -32,11 +50,32 @@ function ProtectedLayout() {
   const nav = [
     { to: "/dashboard", label: "Dashboard", icon: LayoutDashboard, show: true },
     { to: "/students", label: "Students", icon: Users, show: true },
-    { to: "/classes", label: "Classes", icon: BookOpen, show: isAdmin || roles.includes("teacher") },
-    { to: "/attendance", label: "Attendance", icon: ClipboardCheck, show: isAdmin || roles.includes("teacher") },
-    { to: "/plans", label: "504 / IEP", icon: ClipboardList, show: isAdmin || roles.includes("teacher") },
+    {
+      to: "/classes",
+      label: "Classes",
+      icon: BookOpen,
+      show: isAdmin || roles.includes("teacher"),
+    },
+    {
+      to: "/attendance",
+      label: "Attendance",
+      icon: ClipboardCheck,
+      show: isAdmin || roles.includes("teacher"),
+    },
+    {
+      to: "/plans",
+      label: "504 / IEP",
+      icon: ClipboardList,
+      show: isAdmin || roles.includes("teacher"),
+    },
     { to: "/reports", label: "Reports", icon: Printer, show: isAdmin || roles.includes("teacher") },
     { to: "/ledger", label: "Tuition", icon: Receipt, show: true },
+    {
+      to: "/billing",
+      label: "Billing",
+      icon: CreditCard,
+      show: isAdmin || roles.includes("billing_admin"),
+    },
     { to: "/messages", label: "Messages", icon: MessageSquare, show: true },
     { to: "/mail", label: "Mail", icon: Mail, show: isAdmin || roles.includes("teacher") },
     { to: "/forms", label: "Forms", icon: FileText, show: true },
@@ -56,23 +95,35 @@ function ProtectedLayout() {
           <img src="/bayside-logo.png" alt="Bayside Academy" className="h-9 w-auto" />
         </div>
         <nav className="p-3 flex-1 space-y-1">
-          {nav.filter((n) => n.show).map((n) => {
-            const active = path.startsWith(n.to);
-            return (
-              <Link key={n.to} to={n.to} className={`flex items-center gap-2 px-3 py-2 rounded-md text-sm ${active ? "bg-primary text-primary-foreground" : "hover:bg-muted"}`}>
-                <n.icon className="h-4 w-4" /> {n.label}
-              </Link>
-            );
-          })}
+          {nav
+            .filter((n) => n.show)
+            .map((n) => {
+              const active = path.startsWith(n.to);
+              return (
+                <Link
+                  key={n.to}
+                  to={n.to}
+                  className={`flex items-center gap-2 px-3 py-2 rounded-md text-sm ${active ? "bg-primary text-primary-foreground" : "hover:bg-muted"}`}
+                >
+                  <n.icon className="h-4 w-4" /> {n.label}
+                </Link>
+              );
+            })}
         </nav>
         <div className="p-3 border-t">
-          <div className="text-xs text-muted-foreground mb-2 px-1 truncate">{user.email}<br/><span className="capitalize">{role ?? "no role"}</span></div>
+          <div className="text-xs text-muted-foreground mb-2 px-1 truncate">
+            {user.email}
+            <br />
+            <span className="capitalize">{role ?? "no role"}</span>
+          </div>
           <Button variant="ghost" size="sm" className="w-full justify-start" onClick={signOut}>
             <LogOut className="h-4 w-4 mr-2" /> Sign out
           </Button>
         </div>
       </aside>
-      <main className="flex-1 overflow-auto"><Outlet /></main>
+      <main className="flex-1 overflow-auto">
+        <Outlet />
+      </main>
     </div>
   );
 }