diff --git a/src/main/java/com/acquirex/exception/GlobalExceptionHandler.java b/src/main/java/com/acquirex/exception/GlobalExceptionHandler.java
new file mode 100644
index 0000000..d25d1b1
--- /dev/null
+++ b/src/main/java/com/acquirex/exception/GlobalExceptionHandler.java
@@ -0,0 +1,74 @@
+package com.acquirex.exception;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+import java.time.LocalDateTime;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * 전역 예외 처리 핸들러 - Spring Boot 3 (jakarta.validation)
+ */
+@RestControllerAdvice
+@Slf4j
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(AcquisitionNotFoundException.class)
+    public ResponseEntity<Map<String, Object>> handleAcquisitionNotFound(AcquisitionNotFoundException ex) {
+        log.error("매입 정보 없음: {}", ex.getMessage());
+        return buildErrorResponse(HttpStatus.NOT_FOUND, ex.getMessage());
+    }
+
+    @ExceptionHandler(InvalidAcquisitionStateException.class)
+    public ResponseEntity<Map<String, Object>> handleInvalidAcquisitionState(InvalidAcquisitionStateException ex) {
+        log.error("유효하지 않은 매입 상태: {}", ex.getMessage());
+        return buildErrorResponse(HttpStatus.BAD_REQUEST, ex.getMessage());
+    }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<Map<String, Object>> handleValidationErrors(MethodArgumentNotValidException ex) {
+        Map<String, String> errors = new HashMap<>();
+        ex.getBindingResult().getAllErrors().forEach(error -> {
+            String fieldName = ((FieldError) error).getField();
+            errors.put(fieldName, error.getDefaultMessage());
+        });
+        log.error("검증 오류: {}", errors);
+        Map<String, Object> response = new HashMap<>();
+        response.put("timestamp", LocalDateTime.now());
+        response.put("status", HttpStatus.BAD_REQUEST.value());
+        response.put("error", "Validation Failed");
+        response.put("errors", errors);
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(response);
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<Map<String, Object>> handleGenericException(Exception ex) {
+        log.error("예상치 못한 오류 발생", ex);
+        return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, "예상치 못한 오류가 발생했습니다");
+    }
+
+    private ResponseEntity<Map<String, Object>> buildErrorResponse(HttpStatus status, String message) {
+        Map<String, Object> response = new HashMap<>();
+        response.put("timestamp", LocalDateTime.now());
+        response.put("status", status.value());
+        response.put("error", status.getReasonPhrase());
+        response.put("message", message);
+        return ResponseEntity.status(status).body(response);
+    }
+}
+
+/** 매입 정보를 찾을 수 없을 때 발생하는 예외 */
+class AcquisitionNotFoundException extends RuntimeException {
+    public AcquisitionNotFoundException(String message) { super(message); }
+}
+
+/** 매입 상태가 유효하지 않을 때 발생하는 예외 */
+class InvalidAcquisitionStateException extends RuntimeException {
+    public InvalidAcquisitionStateException(String message) { super(message); }
+}
\ No newline at end of file