diff --git a/dictation_client/src/common/token.ts b/dictation_client/src/common/token.ts
index b5422ad..587a0ea 100644
--- a/dictation_client/src/common/token.ts
+++ b/dictation_client/src/common/token.ts
@@ -1,8 +1,8 @@
 // トークンの型やtypeGuardの関数を配置するファイル
-// TODO トークンの型は仮
 export interface Token {
   userId: string;
   role: string;
+  tier: number;
   exp: number;
   iat: number;
 }
@@ -16,6 +16,9 @@ export const isToken = (arg: any): arg is Token => {
   if (arg.role === undefined) {
     return false;
   }
+  if (arg.tier === undefined) {
+    return false;
+  }
   if (arg.exp === undefined) {
     return false;
   }
diff --git a/dictation_server/src/common/error/code.ts b/dictation_server/src/common/error/code.ts
index c430e3f..b6d1b2a 100644
--- a/dictation_server/src/common/error/code.ts
+++ b/dictation_server/src/common/error/code.ts
@@ -28,6 +28,7 @@ export const ErrorCodes = [
   'E010203', // 管理ユーザ権限エラー
   'E010204', // ユーザ不在エラー
   'E010205', // DBのRoleが想定外の値エラー
+  'E010206', // DBのTierが想定外の値エラー
   'E010301', // メールアドレス登録済みエラー
   'E010302', // authorId重複エラー
   'E010401', // PONumber重複エラー
diff --git a/dictation_server/src/common/error/message.ts b/dictation_server/src/common/error/message.ts
index 060dabe..e75953b 100644
--- a/dictation_server/src/common/error/message.ts
+++ b/dictation_server/src/common/error/message.ts
@@ -17,6 +17,7 @@ export const errors: Errors = {
   E010203: 'Administrator Permissions Error.',
   E010204: 'User not Found Error.',
   E010205: 'Role from DB is unexpected value Error.',
+  E010206: 'Tier from DB is unexpected value Error.',
   E010301: 'This email user already created Error',
   E010302: 'This AuthorId already used Error',
   E010401: 'This PoNumber already used Error',
diff --git a/dictation_server/src/common/token/types.ts b/dictation_server/src/common/token/types.ts
index 59542d3..059afc0 100644
--- a/dictation_server/src/common/token/types.ts
+++ b/dictation_server/src/common/token/types.ts
@@ -7,6 +7,10 @@ export type RefreshToken = {
    * 半角スペース区切りのRoleを表現する文字列(ex. "author admin")
    */
   role: string;
+  /**
+   * アカウントの階層情報（1~5までの半角数字）
+   */
+  tier: number;
 };
 
 export type AccessToken = {
@@ -18,6 +22,10 @@ export type AccessToken = {
    * 半角スペース区切りのRoleを表現する文字列(ex. "author admin")
    */
   role: string;
+  /**
+   * アカウントの階層情報（1~5までの半角数字）
+   */
+  tier: number;
 };
 
 export type IDToken = {
diff --git a/dictation_server/src/features/auth/auth.service.ts b/dictation_server/src/features/auth/auth.service.ts
index 9657ac0..d59c653 100644
--- a/dictation_server/src/features/auth/auth.service.ts
+++ b/dictation_server/src/features/auth/auth.service.ts
@@ -72,6 +72,19 @@ export class AuthService {
         HttpStatus.INTERNAL_SERVER_ERROR,
       );
     }
+    // Tierのチェック
+    const minTier = 1;
+    const maxTier = 5;
+    const userTier = user.account.tier;
+    if (userTier < minTier || userTier > maxTier) {
+      this.logger.error(
+        `Tier from DB is unexpected value. tier=${user.account.tier}`,
+      );
+      throw new HttpException(
+        makeErrorResponse('E010206'),
+        HttpStatus.INTERNAL_SERVER_ERROR,
+      );
+    }
     // 要求された環境用トークンの寿命を決定
     const refreshTokenLifetime = type === 'web' ? lifetimeWeb : lifetimeDefault;
 
@@ -105,6 +118,7 @@ export class AuthService {
             ? ADMIN_ROLES.ADMIN
             : ADMIN_ROLES.STANDARD
         }`,
+        tier: user.account.tier,
         userId: idToken.sub,
       },
       refreshTokenLifetime,
@@ -132,6 +146,7 @@ export class AuthService {
     const accessToken = sign<AccessToken>(
       {
         role: token.role,
+        tier: token.tier,
         userId: token.userId,
       },
       lifetime,