diff --git a/lib/models/category.dart b/lib/models/category.dart
index 7293797..e823ad9 100644
--- a/lib/models/category.dart
+++ b/lib/models/category.dart
@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:hive_ce/hive.dart';
+import '../../utils/id_generator.dart';
 
 part 'category.g.dart';
 
@@ -32,12 +33,12 @@ class Category {
 
   /// Конструктор с обязательными параметрами
   const Category({
-    required this.id,
+    String? id,
     required this.name,
     required this.color,
     required this.icon,
     required this.isIncome,
-  });
+  }) : id = id ?? IdGenerator.generateId();
 
   /// Метод для преобразования объекта в Map (полезно для работы с БД)
   Map<String, dynamic> toMap() {
diff --git a/lib/models/tag.dart b/lib/models/tag.dart
index 8ae582a..0df883c 100644
--- a/lib/models/tag.dart
+++ b/lib/models/tag.dart
@@ -1,4 +1,5 @@
 import 'package:hive_ce/hive.dart';
+import '../../utils/id_generator.dart';
 
 part 'tag.g.dart';
 
@@ -14,9 +15,9 @@ class Tag {
 
   /// Конструктор с обязательными параметрами
   const Tag({
-    required this.id,
+    String? id,
     required this.name,
-  });
+  }) : id = id ?? IdGenerator.generateId();
 
   /// Преобразование объекта в Map
   Map<String, dynamic> toMap() {
diff --git a/lib/models/transaction_record.dart b/lib/models/transaction_record.dart
index ccaaf93..038d260 100644
--- a/lib/models/transaction_record.dart
+++ b/lib/models/transaction_record.dart
@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:hive_ce/hive.dart';
+import '../../utils/id_generator.dart';
 import 'category.dart';
 import 'tag.dart';
 
@@ -40,14 +41,14 @@ class TransactionRecord {
 
   /// Конструктор с обязательными параметрами
   const TransactionRecord({
-    required this.id,
+    String? id,
     required this.category,
     this.tag,
     required this.amount,
     required this.dateTime,
     required this.vendor,
     required this.currency,
-  });
+  }) : id = id ?? IdGenerator.generateId();
 
   /// Преобразование объекта в Map
   Map<String, dynamic> toMap() {
diff --git a/lib/utils/id_generator.dart b/lib/utils/id_generator.dart
new file mode 100644
index 0000000..c5cf82c
--- /dev/null
+++ b/lib/utils/id_generator.dart
@@ -0,0 +1,10 @@
+import 'package:uuid/uuid.dart';
+
+class IdGenerator {
+  static final Uuid _uuid = Uuid();
+
+  /// Генерирует уникальный строковый ID
+  static String generateId() {
+    return _uuid.v4();
+  }
+}
diff --git a/pubspec.yaml b/pubspec.yaml
index b57de22..117bf25 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -38,6 +38,7 @@ dependencies:
   hive_ce_flutter: ^2.3.1
   get_it: ^7.2.0
   path_provider: ^2.0.15
+  uuid: ^3.0.7
 
 dev_dependencies:
   hive_ce_generator: ^1.9.2