diff --git a/mooney/src/main/java/tamtam/mooney/domain/transaction/controller/TransactionController.java b/mooney/src/main/java/tamtam/mooney/domain/transaction/controller/TransactionController.java
index cad3e5d..1391695 100644
--- a/mooney/src/main/java/tamtam/mooney/domain/transaction/controller/TransactionController.java
+++ b/mooney/src/main/java/tamtam/mooney/domain/transaction/controller/TransactionController.java
@@ -9,10 +9,7 @@
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
-import tamtam.mooney.domain.transaction.dto.MonthlyTransactionDayUnitDto;
-import tamtam.mooney.domain.transaction.dto.ExpenseAddRequestDto;
-import tamtam.mooney.domain.transaction.dto.IncomeAddRequestDto;
-import tamtam.mooney.domain.transaction.dto.MonthlyTransactionResponseDto;
+import tamtam.mooney.domain.transaction.dto.*;
 import tamtam.mooney.domain.transaction.service.ExpenseDataLoader;
 import tamtam.mooney.domain.transaction.service.ExpenseService;
 import tamtam.mooney.domain.transaction.service.IncomeService;
@@ -30,7 +27,6 @@ public class TransactionController {
     private final TransactionService transactionService;
     private final ExpenseService expenseService;
     private final IncomeService incomeService;
-    private final ExpenseDataLoader expenseDataLoader;
 
     @Operation(summary = "지출 내역 추가")
     @PostMapping("/expenses")
@@ -39,6 +35,13 @@ public ResponseEntity<String> createExpense(@RequestBody @Valid ExpenseAddReques
         return ResponseEntity.ok(category);
     }
 
+    @Operation(summary = "지출 내역 추가 w.카테고리")
+    @PostMapping("/expenses/category")
+    public ResponseEntity<String> createExpenseWithCategory(@RequestBody @Valid ExpenseWithCategoryAddRequestDto request) {
+        String category = expenseService.createExpenseWithCategory(request);
+        return ResponseEntity.ok(category);
+    }
+
     @Operation(summary = "지출 내역 여러 건 추가")
     @PostMapping("/expenses-multiple")
     public ResponseEntity<Void> createMultipleExpenses(
diff --git a/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/BaseExpenseRequest.java b/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/BaseExpenseRequest.java
new file mode 100644
index 0000000..31e3b9b
--- /dev/null
+++ b/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/BaseExpenseRequest.java
@@ -0,0 +1,11 @@
+package tamtam.mooney.domain.transaction.dto;
+
+import java.time.LocalDateTime;
+
+public interface BaseExpenseRequest {
+    String payee();
+    long amount();
+    LocalDateTime transactionTime();
+    String transactionSource();
+    String sourceApp();
+}
diff --git a/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/ExpenseAddRequestDto.java b/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/ExpenseAddRequestDto.java
index ff99c75..4abc024 100644
--- a/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/ExpenseAddRequestDto.java
+++ b/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/ExpenseAddRequestDto.java
@@ -1,24 +1,16 @@
 package tamtam.mooney.domain.transaction.dto;
 
 import jakarta.validation.constraints.NotNull;
-import tamtam.mooney.global.exception.CustomException;
-import tamtam.mooney.global.exception.ErrorCode;
 
 import java.time.LocalDateTime;
 
 public record ExpenseAddRequestDto(
-        @NotNull(message = "Amount is required")
-        Long amount,
+        long amount,
         @NotNull(message = "Transaction time is required")
         LocalDateTime transactionTime,
         String transactionSource,
         String sourceApp,
+        @NotNull(message = "Payee is required")
         String payee
-) {
-    public ExpenseAddRequestDto {
-        // 금액 검증 (0 이상이어야 함)
-        if (amount != null && amount < 0) {
-            throw new CustomException(ErrorCode.INVALID_INPUT_VALUE);
-        }
-    }
-}
+) implements BaseExpenseRequest { }
+
diff --git a/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/ExpenseWithCategoryAddRequestDto.java b/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/ExpenseWithCategoryAddRequestDto.java
new file mode 100644
index 0000000..d4df3db
--- /dev/null
+++ b/mooney/src/main/java/tamtam/mooney/domain/transaction/dto/ExpenseWithCategoryAddRequestDto.java
@@ -0,0 +1,18 @@
+package tamtam.mooney.domain.transaction.dto;
+
+import jakarta.validation.constraints.NotNull;
+import tamtam.mooney.domain.enums.ExpenseCategory;
+
+import java.time.LocalDateTime;
+
+public record ExpenseWithCategoryAddRequestDto(
+        long amount,
+        @NotNull(message = "Transaction time is required")
+        LocalDateTime transactionTime,
+        String transactionSource,
+        String sourceApp,
+        @NotNull(message = "Payee is required")
+        String payee,
+        ExpenseCategory expenseCategory
+) implements BaseExpenseRequest {
+}
\ No newline at end of file
diff --git a/mooney/src/main/java/tamtam/mooney/domain/transaction/service/ExpenseService.java b/mooney/src/main/java/tamtam/mooney/domain/transaction/service/ExpenseService.java
index 2accc2a..b2e9f70 100644
--- a/mooney/src/main/java/tamtam/mooney/domain/transaction/service/ExpenseService.java
+++ b/mooney/src/main/java/tamtam/mooney/domain/transaction/service/ExpenseService.java
@@ -4,9 +4,10 @@
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import tamtam.mooney.domain.mission.repository.MissionRepository;
 import tamtam.mooney.domain.mission.service.MissionService;
+import tamtam.mooney.domain.transaction.dto.BaseExpenseRequest;
 import tamtam.mooney.domain.transaction.dto.ExpenseAddRequestDto;
+import tamtam.mooney.domain.transaction.dto.ExpenseWithCategoryAddRequestDto;
 import tamtam.mooney.domain.transaction.entity.Expense;
 import tamtam.mooney.domain.enums.ExpenseCategory;
 import tamtam.mooney.domain.transaction.repository.ExpenseRepository;
@@ -30,20 +31,31 @@ public class ExpenseService {
     private final ExpenseRepository expenseRepository;
     private final UserService userService;
     // private final LlmCategoryClassifier llmCategoryClassifier;
-    private final MissionRepository missionRepository;
     private final MissionService missionService;
 
-    // 지출 추가
+    // 지출 추가 (카테고리 예측)
     public String createExpense(ExpenseAddRequestDto request) {
         User user = userService.getCurrentUser();
+        String predicted = "FOOD"; //llmCategoryClassifier.classifyCategory(request.payee(), true);
+        ExpenseCategory category = ExpenseCategory.valueOf(predicted);
+        return saveAndReturnCategory(request, user, category);
+    }
 
-        // String predictedCategory = llmCategoryClassifier.classifyCategory(request.payee(), true);
-        String predictedCategory = ExpenseCategory.FOOD.name();
-        ExpenseCategory expenseCategory = ExpenseCategory.valueOf(predictedCategory);
+    // 지출 추가 (카테고리 직접 지정)
+    public String createExpenseWithCategory(ExpenseWithCategoryAddRequestDto request) {
+        User user = userService.getCurrentUser();
+        return saveAndReturnCategory(request, user, request.expenseCategory());
+    }
 
+    // ——— private 헬퍼 메서드 ———
+    private <T extends BaseExpenseRequest> String saveAndReturnCategory(
+            T request,
+            User user,
+            ExpenseCategory category
+    ) {
         Expense expense = Expense.builder()
                 .payee(request.payee())
-                .expenseCategory(expenseCategory)
+                .expenseCategory(category)
                 .amount(request.amount())
                 .transactionTime(request.transactionTime())
                 .transactionSource(request.transactionSource())
@@ -52,11 +64,8 @@ public String createExpense(ExpenseAddRequestDto request) {
                 .build();
 
         transactionRepository.save(expense);
-
-        //들어온 지출의 payee가 현재 진행중인 미션 place에 해당된다면 missionRepo에 save
-        missionService.updateMission(user, request.payee(),request.amount());
-
-        return expense.getExpenseCategory().name();
+        missionService.updateMission(user, request.payee(), request.amount());
+        return category.name();
     }
 
     @Transactional(readOnly = true)