diff --git a/common/src/main/java/com/kt/event/common/security/JwtTokenProvider.java b/common/src/main/java/com/kt/event/common/security/JwtTokenProvider.java
index 7bd50c3..979c7a6 100644
--- a/common/src/main/java/com/kt/event/common/security/JwtTokenProvider.java
+++ b/common/src/main/java/com/kt/event/common/security/JwtTokenProvider.java
@@ -56,13 +56,14 @@ public class JwtTokenProvider {
      * @param roles  역할 목록
      * @return Access Token
      */
-    public String createAccessToken(UUID userId, UUID storeId, String email, String name, List<String> roles) {
+
+    public String createAccessToken(Long userId, Long storeId, String email, String name, List<String> roles) {
         Date now = new Date();
         Date expiryDate = new Date(now.getTime() + accessTokenValidityMs);
 
         return Jwts.builder()
                 .subject(userId.toString())
-                .claim("storeId", storeId.toString())
+                .claim("storeId", storeId != null ? storeId.toString() : null)
                 .claim("email", email)
                 .claim("name", name)
                 .claim("roles", roles)
@@ -112,8 +113,9 @@ public class JwtTokenProvider {
     public UserPrincipal getUserPrincipalFromToken(String token) {
         Claims claims = parseToken(token);
 
-        UUID userId = UUID.fromString(claims.getSubject());
-        UUID storeId = UUID.fromString(claims.get("storeId", String.class));
+        Long userId = Long.parseLong(claims.getSubject());
+        String storeIdStr = claims.get("storeId", String.class);
+        Long storeId = storeIdStr != null ? Long.parseLong(storeIdStr) : null;
         String email = claims.get("email", String.class);
         String name = claims.get("name", String.class);
         @SuppressWarnings("unchecked")
diff --git a/common/src/main/java/com/kt/event/common/security/UserPrincipal.java b/common/src/main/java/com/kt/event/common/security/UserPrincipal.java
index ff99809..5b20fe8 100644
--- a/common/src/main/java/com/kt/event/common/security/UserPrincipal.java
+++ b/common/src/main/java/com/kt/event/common/security/UserPrincipal.java
@@ -31,6 +31,11 @@ public class UserPrincipal implements UserDetails {
      */
     private final UUID storeId;
 
+    /**
+     * 매장 ID
+     */
+    private final Long storeId;
+
     /**
      * 사용자 이메일
      */
diff --git a/user-service/src/main/java/com/kt/event/user/service/impl/AuthenticationServiceImpl.java b/user-service/src/main/java/com/kt/event/user/service/impl/AuthenticationServiceImpl.java
index 8ccd04b..0694c81 100644
--- a/user-service/src/main/java/com/kt/event/user/service/impl/AuthenticationServiceImpl.java
+++ b/user-service/src/main/java/com/kt/event/user/service/impl/AuthenticationServiceImpl.java
@@ -5,8 +5,10 @@ import com.kt.event.common.security.JwtTokenProvider;
 import com.kt.event.user.dto.request.LoginRequest;
 import com.kt.event.user.dto.response.LoginResponse;
 import com.kt.event.user.dto.response.LogoutResponse;
+import com.kt.event.user.entity.Store;
 import com.kt.event.user.entity.User;
 import com.kt.event.user.exception.UserErrorCode;
+import com.kt.event.user.repository.StoreRepository;
 import com.kt.event.user.repository.UserRepository;
 import com.kt.event.user.service.AuthenticationService;
 import com.kt.event.user.service.UserService;
@@ -34,6 +36,7 @@ import java.util.concurrent.TimeUnit;
 public class AuthenticationServiceImpl implements AuthenticationService {
 
     private final UserRepository userRepository;
+    private final StoreRepository storeRepository;
     private final PasswordEncoder passwordEncoder;
     private final JwtTokenProvider jwtTokenProvider;
     private final UserService userService;
@@ -42,10 +45,12 @@ public class AuthenticationServiceImpl implements AuthenticationService {
     private RedisTemplate<String, Object> redisTemplate;
 
     public AuthenticationServiceImpl(UserRepository userRepository,
+                                    StoreRepository storeRepository,
                                     PasswordEncoder passwordEncoder,
                                     JwtTokenProvider jwtTokenProvider,
                                     UserService userService) {
         this.userRepository = userRepository;
+        this.storeRepository = storeRepository;
         this.passwordEncoder = passwordEncoder;
         this.jwtTokenProvider = jwtTokenProvider;
         this.userService = userService;
@@ -68,21 +73,26 @@ public class AuthenticationServiceImpl implements AuthenticationService {
             throw new BusinessException(UserErrorCode.AUTH_FAILED.getErrorCode());
         }
 
-        // 3. JWT 토큰 생성
+        // 3. 매장 정보 조회
+        Store store = storeRepository.findByUserId(user.getId()).orElse(null);
+        Long storeId = store != null ? store.getId() : null;
+
+        // 4. JWT 토큰 생성
         String token = jwtTokenProvider.createAccessToken(
                 user.getId(),
+                storeId,
                 user.getEmail(),
                 user.getName(),
                 List.of(user.getRole().name())
         );
 
-        // 4. Redis 세션 저장 (TTL 7일)
+        // 5. Redis 세션 저장 (TTL 7일)
         saveSession(token, user.getId(), user.getRole().name());
 
-        // 5. 최종 로그인 시각 업데이트 (비동기)
+        // 6. 최종 로그인 시각 업데이트 (비동기)
         userService.updateLastLoginAt(user.getId());
 
-        // 6. 응답 반환
+        // 7. 응답 반환
         return LoginResponse.builder()
                 .token(token)
                 .userId(user.getId())
diff --git a/user-service/src/main/java/com/kt/event/user/service/impl/UserServiceImpl.java b/user-service/src/main/java/com/kt/event/user/service/impl/UserServiceImpl.java
index 15ef003..7cae408 100644
--- a/user-service/src/main/java/com/kt/event/user/service/impl/UserServiceImpl.java
+++ b/user-service/src/main/java/com/kt/event/user/service/impl/UserServiceImpl.java
@@ -103,6 +103,7 @@ public class UserServiceImpl implements UserService {
         // 6. JWT 토큰 생성
         String token = jwtTokenProvider.createAccessToken(
                 savedUser.getId(),
+                savedStore.getId(),
                 savedUser.getEmail(),
                 savedUser.getName(),
                 List.of(savedUser.getRole().name())