diff --git a/src/components/common/input/CalcInput.jsx b/src/components/common/input/CalcInput.jsx
index 32323560..17af010e 100644
--- a/src/components/common/input/CalcInput.jsx
+++ b/src/components/common/input/CalcInput.jsx
@@ -48,14 +48,23 @@ export const CalculatorInput = forwardRef(
       const calculator = calculatorRef.current
       let newDisplayValue = ''
 
+      // 소수점 이하 2자리 제한 로직 추가
+      const shouldPreventInput = (value) => {
+        const decimalParts = (value || '').split('.')
+        return decimalParts.length > 1 && decimalParts[1].length >= 2
+      }
+
       if (hasOperation) {
         // 연산자 이후 숫자 입력 시
         if (calculator.currentOperand === '0' || calculator.shouldResetDisplay) {
           calculator.currentOperand = num.toString()
           calculator.shouldResetDisplay = false
-        } else {
+        }else if (!shouldPreventInput(calculator.currentOperand)) { //소수점 이하2자리
           calculator.currentOperand = (calculator.currentOperand || '') + num
         }
+        // else {
+        //   calculator.currentOperand = (calculator.currentOperand || '') + num
+        // }
         newDisplayValue = calculator.previousOperand + calculator.operation + calculator.currentOperand
         setDisplayValue(newDisplayValue)
       } else {
@@ -68,7 +77,7 @@ export const CalculatorInput = forwardRef(
           if (!hasOperation) {
             onChange(calculator.currentOperand)
           }
-        } else {
+        } else if (!shouldPreventInput(calculator.currentOperand)) { //소수점 이하2자리
           calculator.currentOperand = (calculator.currentOperand || '') + num
           newDisplayValue = calculator.currentOperand
           setDisplayValue(newDisplayValue)
@@ -76,6 +85,14 @@ export const CalculatorInput = forwardRef(
             onChange(newDisplayValue)
           }
         }
+        // else {
+        //   calculator.currentOperand = (calculator.currentOperand || '') + num
+        //   newDisplayValue = calculator.currentOperand
+        //   setDisplayValue(newDisplayValue)
+        //   if (!hasOperation) {
+        //     onChange(newDisplayValue)
+        //   }
+        // }
       }
 
       // 커서를 텍스트 끝으로 이동하고 스크롤 처리