diff --git a/server/src/main/java/kr/or/kosa/cmsplusmain/domain/base/error/ErrorRes.java b/server/src/main/java/kr/or/kosa/cmsplusmain/domain/base/error/ErrorRes.java
index eb2915c6..6262a9d1 100644
--- a/server/src/main/java/kr/or/kosa/cmsplusmain/domain/base/error/ErrorRes.java
+++ b/server/src/main/java/kr/or/kosa/cmsplusmain/domain/base/error/ErrorRes.java
@@ -39,6 +39,13 @@ private ErrorRes(final ErrorCode code) {
 		this.errors = new ArrayList<>();
 	}
 
+	private ErrorRes(final ErrorCode code, final String message) {
+		this.message = message;
+		this.status = code.getStatus();
+		this.code = code.getCode();
+		this.errors = new ArrayList<>();
+	}
+
 
 	public static ErrorRes of(final ErrorCode code, final BindingResult bindingResult) {
 		return new ErrorRes(code, FieldError.of(bindingResult));
@@ -48,6 +55,10 @@ public static ErrorRes of(final ErrorCode code) {
 		return new ErrorRes(code);
 	}
 
+	public static ErrorRes of(final ErrorCode code, final String message) {
+		return new ErrorRes(code, message);
+	}
+
 	public static ErrorRes of(final ErrorCode code, final List<FieldError> errors) {
 		return new ErrorRes(code, errors);
 	}
diff --git a/server/src/main/java/kr/or/kosa/cmsplusmain/domain/base/error/GlobalExceptionHandler.java b/server/src/main/java/kr/or/kosa/cmsplusmain/domain/base/error/GlobalExceptionHandler.java
index 6b04c01e..e1b2311c 100644
--- a/server/src/main/java/kr/or/kosa/cmsplusmain/domain/base/error/GlobalExceptionHandler.java
+++ b/server/src/main/java/kr/or/kosa/cmsplusmain/domain/base/error/GlobalExceptionHandler.java
@@ -12,6 +12,7 @@
 
 import kr.or.kosa.cmsplusmain.domain.base.error.exception.BusinessException;
 import kr.or.kosa.cmsplusmain.domain.base.error.exception.EntityNotFoundException;
+import kr.or.kosa.cmsplusmain.domain.billing.exception.InvalidBillingStatusException;
 import lombok.extern.slf4j.Slf4j;
 
 @ControllerAdvice
@@ -80,6 +81,14 @@ protected ResponseEntity<ErrorRes> handleAccessDeniedException(AccessDeniedExcep
 		return new ResponseEntity<>(response, HttpStatus.valueOf(ErrorCode.HANDLE_ACCESS_DENIED.getStatus()));
 	}
 
+	@ExceptionHandler(InvalidBillingStatusException.class)
+	protected ResponseEntity<ErrorRes> handleInvalidBillingStatusException(final InvalidBillingStatusException e) {
+		log.error("handleInvalidBillingStatusException", e);
+		final ErrorCode errorCode = e.getErrorCode();
+		final ErrorRes response = ErrorRes.of(errorCode, e.getMessage());
+		return new ResponseEntity<>(response, HttpStatus.valueOf(errorCode.getStatus()));
+	}
+
 	@ExceptionHandler(BusinessException.class)
 	protected ResponseEntity<ErrorRes> handleBusinessException(final BusinessException e) {
 		log.error("handleBusinessException", e);
@@ -88,7 +97,6 @@ protected ResponseEntity<ErrorRes> handleBusinessException(final BusinessExcepti
 		return new ResponseEntity<>(response, HttpStatus.valueOf(errorCode.getStatus()));
 	}
 
-
 	@ExceptionHandler(Exception.class)
 	protected ResponseEntity<ErrorRes> handleException(Exception e) {
 		log.error("handleUnknownException", e);
diff --git a/server/src/main/java/kr/or/kosa/cmsplusmain/domain/billing/controller/BillingController.java b/server/src/main/java/kr/or/kosa/cmsplusmain/domain/billing/controller/BillingController.java
index 4ae59edc..4b7effda 100644
--- a/server/src/main/java/kr/or/kosa/cmsplusmain/domain/billing/controller/BillingController.java
+++ b/server/src/main/java/kr/or/kosa/cmsplusmain/domain/billing/controller/BillingController.java
@@ -60,7 +60,7 @@ public void cancelInvoice(@VendorId Long vendorId, @PathVariable Long billingId)
 	* */
 	@GetMapping("payment/{billingId}")
 	public void payRealtimeBilling(@VendorId Long vendorId, @PathVariable Long billingId) {
-		billingService.payBilling(vendorId, billingId);
+		billingService.payRealTimeBilling(vendorId, billingId);
 	}
 
 	/*
diff --git a/server/src/main/java/kr/or/kosa/cmsplusmain/domain/billing/service/BillingService.java b/server/src/main/java/kr/or/kosa/cmsplusmain/domain/billing/service/BillingService.java
index f9a2469e..450acb43 100644
--- a/server/src/main/java/kr/or/kosa/cmsplusmain/domain/billing/service/BillingService.java
+++ b/server/src/main/java/kr/or/kosa/cmsplusmain/domain/billing/service/BillingService.java
@@ -114,9 +114,6 @@ public void cancelInvoice(Long vendorId, Long billingId) {
 		billing.setInvoiceCancelled();
 	}
 
-	/*
-	* 청구 실시간 결제
-	* */
 	@Transactional
 	public void payBilling(Long vendorId, Long billingId) {
 		Billing billing = validateAndGetBilling(vendorId, billingId);
@@ -127,6 +124,19 @@ public void payBilling(Long vendorId, Long billingId) {
 		billing.setPaid();
 	}
 
+	/*
+	 * 청구 실시간 결제
+	 * */
+	@Transactional
+	public void payRealTimeBilling(Long vendorId, Long billingId) {
+		Billing billing = validateAndGetBilling(vendorId, billingId);
+		BillingState.Field.PAY_REALTIME.validateState(billing);
+
+		// TODO: 결제 프로세스 구현
+
+		billing.setPaid();
+	}
+
 	/*
 	* 청구 실시간 결제 취소
 	* */