diff --git a/src/main/java/com/example/howmuch/service/user/AuthService.java b/src/main/java/com/example/howmuch/service/user/AuthService.java
index fdf4e96..4c38710 100644
--- a/src/main/java/com/example/howmuch/service/user/AuthService.java
+++ b/src/main/java/com/example/howmuch/service/user/AuthService.java
@@ -26,8 +26,8 @@ public class AuthService {
     private final UserService userService;
     private final OauthService oauthService;
 
-    @Transactional
     /* jwt 만료시 access token 재발급 해주는 메소드 with 만료된 access token + refresh token */
+    @Transactional
     public UserOauthLoginResponseDto accessTokenByRefreshToken(String accessToken, String refreshToken) {
         // 1. refresh token 유효성
         this.validationRefreshToken(refreshToken);
diff --git a/src/main/java/com/example/howmuch/util/JwtService.java b/src/main/java/com/example/howmuch/util/JwtService.java
index 237db16..1f00c79 100644
--- a/src/main/java/com/example/howmuch/util/JwtService.java
+++ b/src/main/java/com/example/howmuch/util/JwtService.java
@@ -65,6 +65,7 @@ public String getPayLoad(String token) {
                     .getBody()
                     .getSubject();
         } catch (ExpiredJwtException e) {
+            // accessToken 이 만료된 경우 또한 userId 반환
             return e.getClaims().getSubject();
         } catch (JwtException e) {
             throw new UnauthorizedUserException("로그인이 필요합니다.");
diff --git a/src/main/java/com/example/howmuch/util/SecurityUtil.java b/src/main/java/com/example/howmuch/util/SecurityUtil.java
index b419d42..d39f7eb 100644
--- a/src/main/java/com/example/howmuch/util/SecurityUtil.java
+++ b/src/main/java/com/example/howmuch/util/SecurityUtil.java
@@ -23,4 +23,8 @@ public static Collection<GrantedAuthority> getUserNickname() {
                 = (UserAuthentication) SecurityContextHolder.getContext().getAuthentication();
         return authentication.getAuthorities();
     }
+
+    public static void clearSecurityContext() {
+        SecurityContextHolder.clearContext();
+    }
 }