diff --git a/HDesign/src/components/LabelGroupInput/LabelGroupInput.type.ts b/HDesign/src/components/LabelGroupInput/LabelGroupInput.type.ts
index cfa938457..8507311b5 100644
--- a/HDesign/src/components/LabelGroupInput/LabelGroupInput.type.ts
+++ b/HDesign/src/components/LabelGroupInput/LabelGroupInput.type.ts
@@ -2,7 +2,7 @@ export interface LabelGroupInputStyleProps {}
 
 export interface LabelGroupInputCustomProps {
   labelText: string;
-  errorText?: string;
+  errorText: string | null;
 }
 
 export type LabelGroupInputOptionProps = LabelGroupInputStyleProps & LabelGroupInputCustomProps;
diff --git a/HDesign/src/components/LabelInput/LabelInput.tsx b/HDesign/src/components/LabelInput/LabelInput.tsx
index f9dd3b71a..43f60c220 100644
--- a/HDesign/src/components/LabelInput/LabelInput.tsx
+++ b/HDesign/src/components/LabelInput/LabelInput.tsx
@@ -29,9 +29,11 @@ const LabelInput: React.FC<LabelInputProps> = forwardRef<HTMLInputElement, Label
         <Text size="caption" css={labelTextStyle(theme, hasFocus, !!htmlProps.value)}>
           {labelText}
         </Text>
-        <Text size="caption" css={errorTextStyle(theme, isError ?? false)}>
-          {errorText}
-        </Text>
+        {errorText && (
+          <Text size="caption" css={errorTextStyle(theme, isError ?? false)}>
+            {errorText}
+          </Text>
+        )}
       </Flex>
       <Flex flexDirection="column" gap="0.5rem">
         <Input ref={inputRef} isError={isError} placeholder={labelText} {...htmlProps} />
diff --git a/HDesign/src/components/LabelInput/LabelInput.type.ts b/HDesign/src/components/LabelInput/LabelInput.type.ts
index ec24b3a30..83e7e9751 100644
--- a/HDesign/src/components/LabelInput/LabelInput.type.ts
+++ b/HDesign/src/components/LabelInput/LabelInput.type.ts
@@ -2,7 +2,7 @@ export interface LabelInputStyleProps {}
 
 export interface LabelInputCustomProps {
   labelText: string;
-  errorText?: string;
+  errorText: string | null;
   isError?: boolean;
   autoFocus: boolean;
 }
diff --git a/client/src/ErrorProvider.tsx b/client/src/ErrorProvider.tsx
index ef0714c7f..92b93fb60 100644
--- a/client/src/ErrorProvider.tsx
+++ b/client/src/ErrorProvider.tsx
@@ -1,6 +1,6 @@
 import {createContext, useState, useContext, useEffect, ReactNode} from 'react';
 
-import SERVER_ERROR_MESSAGES from '@constants/errorMessage';
+import {SERVER_ERROR_MESSAGES} from '@constants/errorMessage';
 
 // 에러 컨텍스트 생성
 interface ErrorContextType {
diff --git a/client/src/components/Modal/SetActionModal/AddBillActionListModalContent/AddBillActionListModalContent.tsx b/client/src/components/Modal/SetActionModal/AddBillActionListModalContent/AddBillActionListModalContent.tsx
index 239bc0d2d..cc49d5953 100644
--- a/client/src/components/Modal/SetActionModal/AddBillActionListModalContent/AddBillActionListModalContent.tsx
+++ b/client/src/components/Modal/SetActionModal/AddBillActionListModalContent/AddBillActionListModalContent.tsx
@@ -1,4 +1,5 @@
 import {FixedButton, LabelGroupInput} from 'haengdong-design';
+import {useEffect} from 'react';
 
 import validatePurchase from '@utils/validate/validatePurchase';
 
@@ -15,6 +16,7 @@ const AddBillActionListModalContent = ({setIsOpenBottomSheet}: AddBillActionList
   const {
     inputPairList,
     inputRefList,
+    errorMessage,
     errorIndexList,
     handleInputChange,
     getFilledInputPairList,
@@ -34,7 +36,7 @@ const AddBillActionListModalContent = ({setIsOpenBottomSheet}: AddBillActionList
   return (
     <div css={style.container}>
       <div css={style.inputContainer}>
-        <LabelGroupInput labelText="지출내역 / 금액">
+        <LabelGroupInput labelText="지출내역 / 금액" errorText={errorMessage}>
           {inputPairList.map(({index, title, price}) => (
             <div key={index} css={style.input}>
               <LabelGroupInput.Element
diff --git a/client/src/components/Toast/ToastProvider.tsx b/client/src/components/Toast/ToastProvider.tsx
index 3107e37ac..d842a3a08 100644
--- a/client/src/components/Toast/ToastProvider.tsx
+++ b/client/src/components/Toast/ToastProvider.tsx
@@ -1,7 +1,7 @@
 /** @jsxImportSource @emotion/react */
 import {createContext, useContext, useEffect, useState} from 'react';
 
-import SERVER_ERROR_MESSAGES from '@constants/errorMessage';
+import {SERVER_ERROR_MESSAGES} from '@constants/errorMessage';
 
 import {useError} from '../../ErrorProvider';
 
diff --git a/client/src/constants/errorMessage.ts b/client/src/constants/errorMessage.ts
index e238cf90e..f874f6ff4 100644
--- a/client/src/constants/errorMessage.ts
+++ b/client/src/constants/errorMessage.ts
@@ -1,6 +1,6 @@
 type ErrorMessage = Record<string, string>;
 
-const SERVER_ERROR_MESSAGES: ErrorMessage = {
+export const SERVER_ERROR_MESSAGES: ErrorMessage = {
   EVENT_NOT_FOUND: '존재하지 않는 행사입니다.',
   EVENT_NAME_LENGTH_INVALID: '행사 이름은 2자 이상 30자 이하만 입력 가능합니다.',
   EVENT_NAME_CONSECUTIVE_SPACES: '행사 이름에는 공백 문자가 연속될 수 없습니다.',
@@ -45,5 +45,3 @@ export const ERROR_MESSAGE = {
 };
 
 export const UNKNOWN_ERROR = 'UNKNOWN_ERROR';
-
-export default SERVER_ERROR_MESSAGES;
diff --git a/client/src/hooks/useDynamicBillActionInput.tsx b/client/src/hooks/useDynamicBillActionInput.tsx
index 252b40862..f21311de8 100644
--- a/client/src/hooks/useDynamicBillActionInput.tsx
+++ b/client/src/hooks/useDynamicBillActionInput.tsx
@@ -14,7 +14,7 @@ export type BillInputType = 'title' | 'price';
 const useDynamicBillActionInput = (validateFunc: (inputPair: Bill) => ValidateResult) => {
   const [inputPairList, setInputPairList] = useState<InputPair[]>([{title: '', price: '', index: 0}]);
   const inputRefList = useRef<(HTMLInputElement | null)[]>([]);
-  const [errorMessage, setErrorMessage] = useState('');
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
   const [errorIndexList, setErrorIndexList] = useState<number[]>([]);
   const [canSubmit, setCanSubmit] = useState(false);
 
@@ -34,13 +34,14 @@ const useDynamicBillActionInput = (validateFunc: (inputPair: Bill) => ValidateRe
       [field]: value,
     });
 
+    setErrorMessage(validationResultMessage);
+
     // TODO: (@weadie) 가독성이 안좋다는 리뷰. 함수로 분리
     if (
       isLastInputPairFilled({index, field, value}) &&
       targetInputPair.title.trim().length !== 0 &&
       targetInputPair.price.trim().length !== 0
     ) {
-      setErrorMessage('');
       setInputPairList(prevInputPairList => {
         const updatedInputPairList = [...prevInputPairList];
 
@@ -52,19 +53,17 @@ const useDynamicBillActionInput = (validateFunc: (inputPair: Bill) => ValidateRe
       });
     } else if (isValidInput) {
       // 입력된 값이 유효하면 데이터(inputLis)를 변경합니다.
-      setErrorMessage('');
       if (errorIndexList.includes(index)) {
         setErrorIndexList(prev => prev.filter(i => i !== index));
       }
 
       changeInputListValue(index, value, field);
     } else if (value.length === 0) {
-      setErrorMessage('');
+      setErrorMessage(null);
       changeErrorIndex(index);
 
       changeInputListValue(index, value, field);
     } else {
-      setErrorMessage(validationResultMessage ?? '');
       changeErrorIndex(targetInputPair.index);
     }
 
diff --git a/client/src/hooks/useDynamicInput.tsx b/client/src/hooks/useDynamicInput.tsx
index 3584d3a05..77e25098c 100644
--- a/client/src/hooks/useDynamicInput.tsx
+++ b/client/src/hooks/useDynamicInput.tsx
@@ -12,7 +12,7 @@ export type ReturnUseDynamicInput = {
   inputRefList: React.MutableRefObject<(HTMLInputElement | null)[]>;
   handleInputChange: (index: number, event: React.ChangeEvent<HTMLInputElement>) => void;
   deleteEmptyInputElementOnBlur: () => void;
-  errorMessage: string;
+  errorMessage: string | null;
   getFilledInputList: (list?: InputValue[]) => InputValue[];
   focusNextInputOnEnter: (e: React.KeyboardEvent<HTMLInputElement>, index: number) => void;
   canSubmit: boolean;
@@ -23,7 +23,7 @@ export type ReturnUseDynamicInput = {
 const useDynamicInput = (validateFunc: (name: string) => ValidateResult): ReturnUseDynamicInput => {
   const [inputList, setInputList] = useState<InputValue[]>([{index: 0, value: ''}]);
   const inputRefList = useRef<(HTMLInputElement | null)[]>([]);
-  const [errorMessage, setErrorMessage] = useState('');
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
   const [errorIndexList, setErrorIndexList] = useState<number[]>([]);
   const [canSubmit, setCanSubmit] = useState(false);
 
@@ -62,11 +62,10 @@ const useDynamicInput = (validateFunc: (name: string) => ValidateResult): Return
   // onChange와 setValue 둘 다 지원하기 위해서 validate를 분리
   const validateAndSetTargetInput = (index: number, value: string) => {
     const {isValid: isValidInput, errorMessage: validationResultMessage} = validateFunc(value);
+    setErrorMessage(validationResultMessage);
 
     if (isValidInput) {
       // 입력된 값이 유효하면 데이터(inputList)를 변경합니다.
-      setErrorMessage('');
-
       if (errorIndexList.includes(index)) {
         setErrorIndexList(prev => prev.filter(i => i !== index));
       }
@@ -75,7 +74,7 @@ const useDynamicInput = (validateFunc: (name: string) => ValidateResult): Return
     } else if (value.length === 0) {
       // value의 값이 0이라면 errorMessage는 띄워지지 않지만 값은 변경됩니다. 또한 invalid한 값이기에 errorIndex에 추가합니다.
 
-      setErrorMessage('');
+      setErrorMessage(null);
       changeErrorIndex(index);
 
       changeInputListValue(index, value);
@@ -83,8 +82,6 @@ const useDynamicInput = (validateFunc: (name: string) => ValidateResult): Return
       // 유효성 검사에 실패한 입력입니다. 에러 메세지를 세팅합니다.
 
       const targetInput = findInputByIndex(index);
-
-      setErrorMessage(validationResultMessage ?? '');
       changeErrorIndex(targetInput.index);
     }
   };
diff --git a/client/src/hooks/usePutAndDeleteBillAction.ts b/client/src/hooks/usePutAndDeleteBillAction.ts
index 9cb399ef8..925f591e8 100644
--- a/client/src/hooks/usePutAndDeleteBillAction.ts
+++ b/client/src/hooks/usePutAndDeleteBillAction.ts
@@ -12,7 +12,7 @@ import {useFetch} from '@apis/useFetch';
 
 import getEventIdByUrl from '@utils/getEventIdByUrl';
 
-import ERROR_MESSAGE from '@constants/errorMessage';
+import {ERROR_MESSAGE} from '@constants/errorMessage';
 
 const usePutAndDeleteBillAction = (
   initialValue: InputPair,
@@ -26,7 +26,7 @@ const usePutAndDeleteBillAction = (
   const [inputPair, setInputPair] = useState<InputPair>(initialValue);
   const [canSubmit, setCanSubmit] = useState(false);
   const [errorInfo, setErrorInfo] = useState<Record<string, boolean>>({title: false, price: false});
-  const [errorMessage, setErrorMessage] = useState<string | undefined>();
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
 
   const handleInputChange = (field: BillInputType, event: React.ChangeEvent<HTMLInputElement>) => {
     const {value} = event.target;
@@ -42,9 +42,10 @@ const usePutAndDeleteBillAction = (
 
     const {isValid, errorMessage, errorInfo} = validateFunc(getFieldValue());
 
+    setErrorMessage(errorMessage);
+
     if (isValid) {
       // valid일 경우 에러메시지 nope, setValue, submit은 value가 비지 않았을 때 true를 설정
-      setErrorMessage(undefined);
       setInputPair(prevInputPair => {
         return {
           ...prevInputPair,
@@ -55,7 +56,6 @@ const usePutAndDeleteBillAction = (
     } else {
       // valid하지 않으면 event.target.value 덮어쓰기
       event.target.value = inputPair[field];
-      setErrorMessage(errorMessage);
       setCanSubmit(false);
     }
 
diff --git a/client/src/hooks/useSetPassword.ts b/client/src/hooks/useSetPassword.ts
index 0ba5e7272..8e8cf9c8c 100644
--- a/client/src/hooks/useSetPassword.ts
+++ b/client/src/hooks/useSetPassword.ts
@@ -11,7 +11,7 @@ import useEvent from './useEvent';
 const useSetPassword = (eventName: string) => {
   const {fetch} = useFetch();
   const [password, setPassword] = useState('');
-  const [errorMessage, setErrorMessage] = useState('');
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
   const [canSubmit, setCanSubmit] = useState(false);
   const {createNewEvent} = useEvent();
 
@@ -27,13 +27,12 @@ const useSetPassword = (eventName: string) => {
     const {isValid, errorMessage} = validateEventPassword(newValue);
 
     setCanSubmit(newValue.length === RULE.maxEventPasswordLength);
+    setErrorMessage(errorMessage);
 
     if (isValid) {
       setPassword(newValue);
-      setErrorMessage('');
     } else {
       event.target.value = password;
-      setErrorMessage(errorMessage ?? '');
     }
   };
 
diff --git a/client/src/utils/validate/type.ts b/client/src/utils/validate/type.ts
index ba8b0953b..df81f1644 100644
--- a/client/src/utils/validate/type.ts
+++ b/client/src/utils/validate/type.ts
@@ -1,5 +1,5 @@
 export interface ValidateResult {
   isValid: boolean;
-  errorMessage?: string;
+  errorMessage: string | null;
   errorInfo?: Record<string, boolean>;
 }
diff --git a/client/src/utils/validate/validateEventName.ts b/client/src/utils/validate/validateEventName.ts
index b390f12b9..93f4ecef1 100644
--- a/client/src/utils/validate/validateEventName.ts
+++ b/client/src/utils/validate/validateEventName.ts
@@ -1,4 +1,4 @@
-import ERROR_MESSAGE from '@constants/errorMessage';
+import {ERROR_MESSAGE} from '@constants/errorMessage';
 import RULE from '@constants/rule';
 
 import {ValidateResult} from './type';
@@ -7,7 +7,7 @@ const validateEventName = (name: string): ValidateResult => {
   if (name.length > RULE.maxEventNameLength) {
     return {isValid: false, errorMessage: ERROR_MESSAGE.eventName};
   }
-  return {isValid: true};
+  return {isValid: true, errorMessage: null};
 };
 
 export default validateEventName;
diff --git a/client/src/utils/validate/validateEventPassword.ts b/client/src/utils/validate/validateEventPassword.ts
index 70499e393..7075e2f3e 100644
--- a/client/src/utils/validate/validateEventPassword.ts
+++ b/client/src/utils/validate/validateEventPassword.ts
@@ -1,4 +1,4 @@
-import ERROR_MESSAGE from '@constants/errorMessage';
+import {ERROR_MESSAGE} from '@constants/errorMessage';
 import REGEXP from '@constants/regExp';
 
 import {ValidateResult} from './type';
@@ -7,7 +7,7 @@ const validateEventPassword = (password: string): ValidateResult => {
   if (!REGEXP.eventPassword.test(password)) {
     return {isValid: false, errorMessage: ERROR_MESSAGE.eventPasswordType};
   }
-  return {isValid: true};
+  return {isValid: true, errorMessage: null};
 };
 
 export default validateEventPassword;
diff --git a/client/src/utils/validate/validateMemberName.ts b/client/src/utils/validate/validateMemberName.ts
index 06c7416dd..053028761 100644
--- a/client/src/utils/validate/validateMemberName.ts
+++ b/client/src/utils/validate/validateMemberName.ts
@@ -16,7 +16,7 @@ const validateMemberName = (name: string): ValidateResult => {
   };
 
   if (validateOnlyString() && validateLength()) {
-    return {isValid: true};
+    return {isValid: true, errorMessage: null};
   }
 
   return {isValid: false, errorMessage: ERROR_MESSAGE.memberName};
diff --git a/client/src/utils/validate/validatePurchase.ts b/client/src/utils/validate/validatePurchase.ts
index 7c7a4b3d6..9915ce8b7 100644
--- a/client/src/utils/validate/validatePurchase.ts
+++ b/client/src/utils/validate/validatePurchase.ts
@@ -1,6 +1,6 @@
 import type {Bill} from 'types/serviceType';
 
-import ERROR_MESSAGE from '@constants/errorMessage';
+import {ERROR_MESSAGE} from '@constants/errorMessage';
 import RULE from '@constants/rule';
 import REGEXP from '@constants/regExp';
 
@@ -8,7 +8,7 @@ import {ValidateResult} from './type';
 
 const validatePurchase = (inputPair: Bill): ValidateResult => {
   const {title, price} = inputPair;
-  let errorMessage;
+  let errorMessage: string | null = null;
 
   const errorInfo = {
     price: false,
@@ -38,7 +38,7 @@ const validatePurchase = (inputPair: Bill): ValidateResult => {
   };
 
   if (validatePrice() && validateTitle()) {
-    return {isValid: true, errorMessage: ''};
+    return {isValid: true, errorMessage: null};
   }
 
   return {isValid: false, errorMessage, errorInfo};