diff --git a/domain/src/main/java/com/kbe5/domain/company/entity/Company.java b/domain/src/main/java/com/kbe5/domain/company/entity/Company.java
index 65c64fa6..bf8bcf16 100644
--- a/domain/src/main/java/com/kbe5/domain/company/entity/Company.java
+++ b/domain/src/main/java/com/kbe5/domain/company/entity/Company.java
@@ -25,8 +25,8 @@ public class Company extends BaseEntity {
     @Column(length = 30)
     private String companyCode;
 
-    @Builder
-    private Company(int bizNumber, String name) {
+
+    public Company(int bizNumber, String name) {
         this.bizNumber = bizNumber;
         this.name = name;
     }
@@ -36,7 +36,7 @@ public void update(int bizNumber, String name) {
         this.name = name;
     }
 
-    public void assignCompanyCode(String code) {
-        this.companyCode = code;
+    public void assignCompanyCode() {
+        this.companyCode = String.format("C%s", this.getId());
     }
 }
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/controller/CompanyController.java b/rento-api/src/main/java/com/kbe5/api/domain/company/controller/CompanyController.java
index 3488ec69..92f662eb 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/controller/CompanyController.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/controller/CompanyController.java
@@ -1,12 +1,12 @@
 package com.kbe5.api.domain.company.controller;
 
-import com.kbe5.api.domain.company.dto.request.CompanyBiznumberRequest;
-import com.kbe5.api.domain.company.dto.request.CompanyRegisterRequest;
-import com.kbe5.api.domain.company.dto.request.CompanyUpdateRequest;
-import com.kbe5.api.domain.company.dto.response.CompanyDeleteResponse;
-import com.kbe5.api.domain.company.dto.response.CompanyRegisterResponse;
-import com.kbe5.api.domain.company.dto.response.CompanyResponse;
-import com.kbe5.api.domain.company.dto.response.CompanyUpdateResponse;
+import com.kbe5.api.domain.company.service.dto.request.CompanyBiznumberRequest;
+import com.kbe5.api.domain.company.service.dto.request.CompanyRegisterRequest;
+import com.kbe5.api.domain.company.service.dto.request.CompanyUpdateRequest;
+import com.kbe5.api.domain.company.service.dto.response.CompanyDeleteResponse;
+import com.kbe5.api.domain.company.service.dto.response.CompanyRegisterResponse;
+import com.kbe5.api.domain.company.service.dto.response.CompanyResponse;
+import com.kbe5.api.domain.company.service.dto.response.CompanyUpdateResponse;
 import com.kbe5.common.response.api.ApiResponse;
 import org.springframework.http.ResponseEntity;
 
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/controller/CompanyControllerImpl.java b/rento-api/src/main/java/com/kbe5/api/domain/company/controller/CompanyControllerImpl.java
index 7bce4390..f80ff316 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/controller/CompanyControllerImpl.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/controller/CompanyControllerImpl.java
@@ -1,13 +1,13 @@
 package com.kbe5.api.domain.company.controller;
 
 
-import com.kbe5.api.domain.company.dto.request.CompanyBiznumberRequest;
-import com.kbe5.api.domain.company.dto.request.CompanyRegisterRequest;
-import com.kbe5.api.domain.company.dto.request.CompanyUpdateRequest;
-import com.kbe5.api.domain.company.dto.response.CompanyDeleteResponse;
-import com.kbe5.api.domain.company.dto.response.CompanyRegisterResponse;
-import com.kbe5.api.domain.company.dto.response.CompanyResponse;
-import com.kbe5.api.domain.company.dto.response.CompanyUpdateResponse;
+import com.kbe5.api.domain.company.service.dto.request.CompanyBiznumberRequest;
+import com.kbe5.api.domain.company.service.dto.request.CompanyRegisterRequest;
+import com.kbe5.api.domain.company.service.dto.request.CompanyUpdateRequest;
+import com.kbe5.api.domain.company.service.dto.response.CompanyDeleteResponse;
+import com.kbe5.api.domain.company.service.dto.response.CompanyRegisterResponse;
+import com.kbe5.api.domain.company.service.dto.response.CompanyResponse;
+import com.kbe5.api.domain.company.service.dto.response.CompanyUpdateResponse;
 import com.kbe5.api.domain.company.service.CompanyService;
 import com.kbe5.common.apiresponse.ResEntityFactory;
 import com.kbe5.common.response.api.ApiResponse;
@@ -32,10 +32,9 @@ public class CompanyControllerImpl implements CompanyController {
     @PostMapping("/register")
     public ResponseEntity<ApiResponse<CompanyRegisterResponse>> register(@RequestBody @Valid
                                                                          CompanyRegisterRequest request) {
-        Company company = CompanyRegisterRequest.toEntity(request);
 
         return ResEntityFactory.toResponse(ApiResultCode.SUCCESS,
-                CompanyRegisterResponse.fromEntity(companyService.register(company)));
+                CompanyRegisterResponse.fromEntity(companyService.register(request)));
     }
 
     @GetMapping("/{id}")
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyRegisterRequest.java b/rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyRegisterRequest.java
deleted file mode 100644
index ecb84a2b..00000000
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyRegisterRequest.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package com.kbe5.api.domain.company.dto.request;
-
-import com.kbe5.domain.company.entity.Company;
-import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.NotNull;
-
-public record CompanyRegisterRequest(
-
-        @NotNull
-        int bizNumber,
-
-        @NotBlank
-        String name
-) {
-        public static Company toEntity(CompanyRegisterRequest request) {
-                return Company.builder()
-                        .bizNumber(request.bizNumber())
-                        .name(request.name())
-                        .build();
-        }
-}
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/service/CompanyService.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/CompanyService.java
index 6fc3b8dc..6603be9a 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/service/CompanyService.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/CompanyService.java
@@ -1,7 +1,9 @@
 package com.kbe5.api.domain.company.service;
 
-import com.kbe5.api.domain.company.dto.request.CompanyUpdateRequest;
-import com.kbe5.api.domain.company.dto.response.CompanyDeleteResponse;
+import com.kbe5.api.domain.company.service.dto.request.CompanyRegisterRequest;
+import com.kbe5.api.domain.company.service.dto.request.CompanyUpdateRequest;
+import com.kbe5.api.domain.company.service.dto.response.CompanyDeleteResponse;
+import com.kbe5.api.domain.company.service.mapper.CompanyMapper;
 import com.kbe5.api.domain.company.vo.CompanyUpdateVO;
 import com.kbe5.common.exception.DomainException;
 import com.kbe5.common.exception.ErrorType;
@@ -20,10 +22,10 @@ public class CompanyService {
 
     private final CompanyRepository companyRepository;
 
-    public Company register(Company company) {
-        company = companyRepository.save(company);
-
-        makeCompanyCode(company);
+    public Company register(CompanyRegisterRequest request) {
+        Company company = CompanyMapper.toEntity(request);
+        companyRepository.save(company);
+        company.assignCompanyCode();
 
         return company;
     }
@@ -40,10 +42,6 @@ public Company findByCompanyCode(String code) {
                 .orElseThrow(() -> new DomainException(ErrorType.COMPANY_NOT_FOUND));
     }
 
-    private void makeCompanyCode(Company company) {
-        company.assignCompanyCode("C" + company.getId());
-        companyRepository.save(company);
-    }
 
     public Company update(Long id, CompanyUpdateRequest request) {
         Company company = companyRepository
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyBiznumberRequest.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyBiznumberRequest.java
similarity index 54%
rename from rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyBiznumberRequest.java
rename to rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyBiznumberRequest.java
index af92a60b..f1abeedc 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyBiznumberRequest.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyBiznumberRequest.java
@@ -1,4 +1,4 @@
-package com.kbe5.api.domain.company.dto.request;
+package com.kbe5.api.domain.company.service.dto.request;
 
 public record CompanyBiznumberRequest(
         int biznumber
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyRegisterRequest.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyRegisterRequest.java
new file mode 100644
index 00000000..4e58def1
--- /dev/null
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyRegisterRequest.java
@@ -0,0 +1,13 @@
+package com.kbe5.api.domain.company.service.dto.request;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+public record CompanyRegisterRequest(
+
+        @NotNull
+        int bizNumber,
+
+        @NotBlank
+        String name
+) {}
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyUpdateRequest.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyUpdateRequest.java
similarity index 79%
rename from rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyUpdateRequest.java
rename to rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyUpdateRequest.java
index 0654bf3e..8decd662 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/request/CompanyUpdateRequest.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/request/CompanyUpdateRequest.java
@@ -1,4 +1,4 @@
-package com.kbe5.api.domain.company.dto.request;
+package com.kbe5.api.domain.company.service.dto.request;
 
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyDeleteResponse.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyDeleteResponse.java
similarity index 79%
rename from rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyDeleteResponse.java
rename to rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyDeleteResponse.java
index d135a519..cdbdca7d 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyDeleteResponse.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyDeleteResponse.java
@@ -1,4 +1,4 @@
-package com.kbe5.api.domain.company.dto.response;
+package com.kbe5.api.domain.company.service.dto.response;
 
 public record CompanyDeleteResponse(
         Long id,
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyDetailResponse.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyDetailResponse.java
similarity index 87%
rename from rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyDetailResponse.java
rename to rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyDetailResponse.java
index 34f365fc..7178e7d8 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyDetailResponse.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyDetailResponse.java
@@ -1,4 +1,4 @@
-package com.kbe5.api.domain.company.dto.response;
+package com.kbe5.api.domain.company.service.dto.response;
 
 import com.kbe5.domain.company.entity.Company;
 
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyRegisterResponse.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyRegisterResponse.java
similarity index 83%
rename from rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyRegisterResponse.java
rename to rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyRegisterResponse.java
index 0d4da23a..bcab8153 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyRegisterResponse.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyRegisterResponse.java
@@ -1,4 +1,4 @@
-package com.kbe5.api.domain.company.dto.response;
+package com.kbe5.api.domain.company.service.dto.response;
 
 
 import com.kbe5.domain.company.entity.Company;
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyResponse.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyResponse.java
similarity index 91%
rename from rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyResponse.java
rename to rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyResponse.java
index 3ae7f1c2..ea325705 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyResponse.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyResponse.java
@@ -1,4 +1,4 @@
-package com.kbe5.api.domain.company.dto.response;
+package com.kbe5.api.domain.company.service.dto.response;
 
 
 import com.kbe5.domain.company.entity.Company;
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyUpdateResponse.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyUpdateResponse.java
similarity index 83%
rename from rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyUpdateResponse.java
rename to rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyUpdateResponse.java
index 9076dd95..37894cad 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/dto/response/CompanyUpdateResponse.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/dto/response/CompanyUpdateResponse.java
@@ -1,4 +1,4 @@
-package com.kbe5.api.domain.company.dto.response;
+package com.kbe5.api.domain.company.service.dto.response;
 
 
 import com.kbe5.domain.company.entity.Company;
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/service/mapper/CompanyMapper.java b/rento-api/src/main/java/com/kbe5/api/domain/company/service/mapper/CompanyMapper.java
new file mode 100644
index 00000000..aaf9f994
--- /dev/null
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/service/mapper/CompanyMapper.java
@@ -0,0 +1,11 @@
+package com.kbe5.api.domain.company.service.mapper;
+
+import com.kbe5.api.domain.company.service.dto.request.CompanyRegisterRequest;
+import com.kbe5.domain.company.entity.Company;
+
+public class CompanyMapper {
+
+    public static Company toEntity(CompanyRegisterRequest request) {
+        return new Company(request.bizNumber(), request.name());
+    }
+}
diff --git a/rento-api/src/main/java/com/kbe5/api/domain/company/vo/CompanyUpdateVO.java b/rento-api/src/main/java/com/kbe5/api/domain/company/vo/CompanyUpdateVO.java
index e30ecc01..eb0e5314 100644
--- a/rento-api/src/main/java/com/kbe5/api/domain/company/vo/CompanyUpdateVO.java
+++ b/rento-api/src/main/java/com/kbe5/api/domain/company/vo/CompanyUpdateVO.java
@@ -1,6 +1,6 @@
 package com.kbe5.api.domain.company.vo;
 
-import com.kbe5.api.domain.company.dto.request.CompanyUpdateRequest;
+import com.kbe5.api.domain.company.service.dto.request.CompanyUpdateRequest;
 import com.kbe5.domain.company.entity.Company;
 import lombok.Getter;