diff --git a/src/components/quotes/QuoteRegistrationV2.tsx b/src/components/quotes/QuoteRegistrationV2.tsx
index f71ab7c9..078c998f 100644
--- a/src/components/quotes/QuoteRegistrationV2.tsx
+++ b/src/components/quotes/QuoteRegistrationV2.tsx
@@ -282,6 +282,8 @@ export function QuoteRegistrationV2({
       vatType: "included",
       remarks: "[DevFill] 테스트 견적입니다.",
       status: "draft",
+      discountRate: 0,
+      discountAmount: 0,
       locations: testLocations,
     };
 
diff --git a/src/layouts/AuthenticatedLayout.tsx b/src/layouts/AuthenticatedLayout.tsx
index 0c9f4680..ddfcd7b1 100644
--- a/src/layouts/AuthenticatedLayout.tsx
+++ b/src/layouts/AuthenticatedLayout.tsx
@@ -28,6 +28,9 @@ import {
   Award,
   Bell,
   Clock,
+  Minus,
+  Plus,
+  Type,
 } from 'lucide-react';
 import { Input } from '@/components/ui/input';
 import { Button } from '@/components/ui/button';
@@ -97,6 +100,29 @@ export default function AuthenticatedLayout({ children }: AuthenticatedLayoutPro
   const router = useRouter();
   const pathname = usePathname(); // 현재 경로 추적
 
+  // 폰트 크기 조절 (12~18px, 기본 16px)
+  const FONT_SIZES = [12, 13, 14, 15, 16] as const;
+  const [fontSize, setFontSize] = useState(16);
+
+  useEffect(() => {
+    // 초기값: localStorage 또는 CSS 변수에서 읽기
+    const saved = localStorage.getItem('sam-font-size');
+    if (saved) {
+      const size = parseInt(saved, 10);
+      if (size >= 12 && size <= 18) {
+        setFontSize(size);
+        document.documentElement.style.setProperty('--font-size', `${size}px`);
+      }
+    }
+  }, []);
+
+  const handleFontSizeChange = useCallback((size: number) => {
+    const clamped = Math.max(12, Math.min(18, size));
+    setFontSize(clamped);
+    document.documentElement.style.setProperty('--font-size', `${clamped}px`);
+    localStorage.setItem('sam-font-size', String(clamped));
+  }, []);
+
   // 확장된 서브메뉴 관리 (기본적으로 sales, master-data 확장)
   const [expandedMenus, setExpandedMenus] = useState<string[]>(['sales', 'master-data']);
 
@@ -1151,6 +1177,54 @@ export default function AuthenticatedLayout({ children }: AuthenticatedLayoutPro
                     {/* 구분선 */}
                     <div className="my-2 border-t border-border" />
 
+                    {/* 글자 크기 조절 */}
+                    <div className="px-2 py-1">
+                      <div className="flex items-center gap-1 text-sm text-muted-foreground mb-1.5">
+                        <Type className="h-3.5 w-3.5" />
+                        <span className="text-xs font-medium">글자 크기</span>
+                        <span className="ml-auto text-xs font-semibold text-foreground">{fontSize}px</span>
+                      </div>
+                      <div className="flex items-center gap-1">
+                        <Button
+                          variant="outline"
+                          size="sm"
+                          className="h-7 w-7 p-0 shrink-0"
+                          onClick={(e) => { e.preventDefault(); handleFontSizeChange(fontSize - 1); }}
+                          disabled={fontSize <= 12}
+                        >
+                          <Minus className="h-3 w-3" />
+                        </Button>
+                        <div className="flex items-center gap-0.5 flex-1 justify-center">
+                          {FONT_SIZES.map((size) => (
+                            <button
+                              key={size}
+                              type="button"
+                              onClick={(e) => { e.preventDefault(); handleFontSizeChange(size); }}
+                              className={`h-6 min-w-[28px] rounded text-xs font-medium transition-colors ${
+                                fontSize === size
+                                  ? 'bg-primary text-primary-foreground'
+                                  : 'hover:bg-muted text-muted-foreground'
+                              }`}
+                            >
+                              {size}
+                            </button>
+                          ))}
+                        </div>
+                        <Button
+                          variant="outline"
+                          size="sm"
+                          className="h-7 w-7 p-0 shrink-0"
+                          onClick={(e) => { e.preventDefault(); handleFontSizeChange(fontSize + 1); }}
+                          disabled={fontSize >= 18}
+                        >
+                          <Plus className="h-3 w-3" />
+                        </Button>
+                      </div>
+                    </div>
+
+                    {/* 구분선 */}
+                    <div className="my-2 border-t border-border" />
+
                     {/* 로그아웃 */}
                     <DropdownMenuItem onClick={handleLogout} className="rounded-lg text-red-600 hover:text-red-700 hover:bg-red-50">
                       <LogOut className="mr-2 h-4 w-4" />