diff --git a/src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/CustomerGroup.xml b/src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/CustomerGroup.xml
index 96e13c2576..3bd3c35438 100644
--- a/src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/CustomerGroup.xml
+++ b/src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/CustomerGroup.xml
@@ -32,6 +32,9 @@
                 <attribute name="denormalization_context">
                     <attribute name="groups">admin:customer_group:create</attribute>
                 </attribute>
+                <attribute name="normalization_context">
+                    <attribute name="groups">admin:customer_group:read</attribute>
+                </attribute>
             </collectionOperation>
         </collectionOperations>
 
@@ -48,6 +51,9 @@
                 <attribute name="denormalization_context">
                     <attribute name="groups">admin:customer_group:update</attribute>
                 </attribute>
+                <attribute name="normalization_context">
+                    <attribute name="groups">admin:customer_group:read</attribute>
+                </attribute>
             </itemOperation>
 
             <itemOperation name="admin_delete">
diff --git a/src/Sylius/Bundle/ApiBundle/Resources/config/serialization/CustomerGroup.xml b/src/Sylius/Bundle/ApiBundle/Resources/config/serialization/CustomerGroup.xml
index d5a30f1f8b..5bc40c866c 100644
--- a/src/Sylius/Bundle/ApiBundle/Resources/config/serialization/CustomerGroup.xml
+++ b/src/Sylius/Bundle/ApiBundle/Resources/config/serialization/CustomerGroup.xml
@@ -16,9 +16,6 @@
             xsi:schemaLocation="http://symfony.com/schema/dic/serializer-mapping https://symfony.com/schema/dic/serializer-mapping/serializer-mapping-1.0.xsd"
 >
     <class name="Sylius\Component\Customer\Model\CustomerGroup">
-        <attribute name="id">
-            <group>admin:customer_group:read</group>
-        </attribute>
         <attribute name="code">
             <group>admin:customer_group:read</group>
             <group>admin:customer_group:create</group>
diff --git a/tests/Api/Admin/CustomerGroupsTest.php b/tests/Api/Admin/CustomerGroupsTest.php
new file mode 100644
index 0000000000..4a071bc013
--- /dev/null
+++ b/tests/Api/Admin/CustomerGroupsTest.php
@@ -0,0 +1,114 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Paweł Jędrzejewski
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Tests\Api\Admin;
+
+use Sylius\Component\Customer\Model\CustomerGroupInterface;
+use Sylius\Tests\Api\JsonApiTestCase;
+use Sylius\Tests\Api\Utils\AdminUserLoginTrait;
+use Symfony\Component\HttpFoundation\Response;
+
+final class CustomerGroupsTest extends JsonApiTestCase
+{
+    use AdminUserLoginTrait;
+
+    /** @test */
+    public function it_gets_a_customer_group(): void
+    {
+        $fixtures = $this->loadFixturesFromFiles(['authentication/api_administrator.yaml', 'customer_group.yaml']);
+        $header = array_merge($this->logInAdminUser('api@example.com'), self::CONTENT_TYPE_HEADER);
+
+        /** @var CustomerGroupInterface $group */
+        $group = $fixtures['group_vip'];
+
+        $this->client->request(
+            method: 'GET',
+            uri: sprintf('/api/v2/admin/customer-groups/%s', $group->getCode()),
+            server: $header,
+        );
+
+        $this->assertResponse(
+            $this->client->getResponse(),
+            'admin/customer_group/get_customer_group_response',
+            Response::HTTP_OK,
+        );
+    }
+
+    /** @test */
+    public function it_gets_customer_groups(): void
+    {
+        $this->loadFixturesFromFiles(['authentication/api_administrator.yaml', 'customer_group.yaml']);
+        $header = array_merge($this->logInAdminUser('api@example.com'), self::CONTENT_TYPE_HEADER);
+
+        $this->client->request(
+            method: 'GET',
+            uri: '/api/v2/admin/customer-groups',
+            server: $header,
+        );
+
+        $this->assertResponse(
+            $this->client->getResponse(),
+            'admin/customer_group/get_customer_groups_response',
+            Response::HTTP_OK,
+        );
+    }
+
+    /** @test */
+    public function it_creates_a_customer_group(): void
+    {
+        $this->loadFixturesFromFiles(['authentication/api_administrator.yaml']);
+        $header = array_merge($this->logInAdminUser('api@example.com'), self::CONTENT_TYPE_HEADER);
+
+        $this->client->request(
+            method: 'POST',
+            uri: '/api/v2/admin/customer-groups',
+            server: $header,
+            content: json_encode([
+                'name' => 'Special',
+                'code' => 'special',
+            ], JSON_THROW_ON_ERROR),
+        );
+
+        $this->assertResponse(
+            $this->client->getResponse(),
+            'admin/customer_group/post_customer_group_response',
+            Response::HTTP_CREATED,
+        );
+    }
+
+    /** @test */
+    public function it_updates_an_existing_customer_group(): void
+    {
+        $fixtures = $this->loadFixturesFromFiles(['authentication/api_administrator.yaml', 'customer_group.yaml']);
+
+        /** @var CustomerGroupInterface $group */
+        $group = $fixtures['group_vip'];
+
+        $header = array_merge($this->logInAdminUser('api@example.com'), self::CONTENT_TYPE_HEADER);
+
+        $this->client->request(
+            method: 'PUT',
+            uri: '/api/v2/admin/customer-groups/' . $group->getCode(),
+            server: $header,
+            content: json_encode([
+                'name' => 'Very Important People',
+            ], JSON_THROW_ON_ERROR),
+        );
+
+        $this->assertResponse(
+            $this->client->getResponse(),
+            'admin/customer_group/put_customer_group_response',
+            Response::HTTP_OK,
+        );
+    }
+}
diff --git a/tests/Api/DataFixtures/ORM/customer_group.yaml b/tests/Api/DataFixtures/ORM/customer_group.yaml
new file mode 100644
index 0000000000..97ea0d3ed3
--- /dev/null
+++ b/tests/Api/DataFixtures/ORM/customer_group.yaml
@@ -0,0 +1,7 @@
+Sylius\Component\Customer\Model\CustomerGroup:
+    group_premium:
+        code: 'premium'
+        name: 'Premium'
+    group_vip:
+        code: 'vip'
+        name: 'VIP'
diff --git a/tests/Api/Responses/Expected/admin/customer_group/get_customer_group_response.json b/tests/Api/Responses/Expected/admin/customer_group/get_customer_group_response.json
new file mode 100644
index 0000000000..01ff8994c4
--- /dev/null
+++ b/tests/Api/Responses/Expected/admin/customer_group/get_customer_group_response.json
@@ -0,0 +1,7 @@
+{
+    "@context": "\/api\/v2\/contexts\/CustomerGroup",
+    "@id": "\/api\/v2\/admin\/customer-groups\/vip",
+    "@type": "CustomerGroup",
+    "code": "vip",
+    "name": "VIP"
+}
diff --git a/tests/Api/Responses/Expected/admin/customer_group/get_customer_groups_response.json b/tests/Api/Responses/Expected/admin/customer_group/get_customer_groups_response.json
new file mode 100644
index 0000000000..387c9caf8e
--- /dev/null
+++ b/tests/Api/Responses/Expected/admin/customer_group/get_customer_groups_response.json
@@ -0,0 +1,20 @@
+{
+    "@context": "\/api\/v2\/contexts\/CustomerGroup",
+    "@id": "\/api\/v2\/admin\/customer-groups",
+    "@type": "hydra:Collection",
+    "hydra:member": [
+        {
+            "@id": "\/api\/v2\/admin\/customer-groups\/premium",
+            "@type": "CustomerGroup",
+            "code": "premium",
+            "name": "Premium"
+        },
+        {
+            "@id": "\/api\/v2\/admin\/customer-groups\/vip",
+            "@type": "CustomerGroup",
+            "code": "vip",
+            "name": "VIP"
+        }
+    ],
+    "hydra:totalItems": 2
+}
diff --git a/tests/Api/Responses/Expected/admin/customer_group/post_customer_group_response.json b/tests/Api/Responses/Expected/admin/customer_group/post_customer_group_response.json
new file mode 100644
index 0000000000..3206ed4885
--- /dev/null
+++ b/tests/Api/Responses/Expected/admin/customer_group/post_customer_group_response.json
@@ -0,0 +1,7 @@
+{
+    "@context": "\/api\/v2\/contexts\/CustomerGroup",
+    "@id": "\/api\/v2\/admin\/customer-groups\/special",
+    "@type": "CustomerGroup",
+    "code": "special",
+    "name": "Special"
+}
diff --git a/tests/Api/Responses/Expected/admin/customer_group/put_customer_group_response.json b/tests/Api/Responses/Expected/admin/customer_group/put_customer_group_response.json
new file mode 100644
index 0000000000..fd00865537
--- /dev/null
+++ b/tests/Api/Responses/Expected/admin/customer_group/put_customer_group_response.json
@@ -0,0 +1,7 @@
+{
+    "@context": "\/api\/v2\/contexts\/CustomerGroup",
+    "@id": "\/api\/v2\/admin\/customer-groups\/vip",
+    "@type": "CustomerGroup",
+    "code": "vip",
+    "name": "Very Important People"
+}