diff --git a/README.md b/README.md
index 32b587de..58d396f5 100644
--- a/README.md
+++ b/README.md
@@ -68,9 +68,9 @@ It is open for changes and input from the community, your [ideas and questions](
 > You don't have to wait for the next official release, upgrade it at any time from the master branch, 
 > which is always deployable - release tags are simple snapshots of the development version.
 
-Release versions will be created on a regular base (approx. one release every 2 months).
+Release versions will be created on a regular basis, every couple of weeks.
 Every code change, whether it's a new feature or a bugfix, will be done on the master branch. 
-Kimai is actively developed in my spare time, I put my effort into the software instead of backporting changes.
+Kimai is actively developed in my spare time, I put my effort into the software instead of back-porting changes.
 
 ## Contributing
 
diff --git a/src/Constants.php b/src/Constants.php
index d6fa7f4c..264de03e 100644
--- a/src/Constants.php
+++ b/src/Constants.php
@@ -17,11 +17,11 @@ class Constants
     /**
      * The current release version
      */
-    public const VERSION = '1.27.0';
+    public const VERSION = '1.28.0';
     /**
      * The current release: major * 10000 + minor * 100 + patch
      */
-    public const VERSION_ID = 12700;
+    public const VERSION_ID = 12800;
     /**
      * The current release status, either "stable" or "dev"
      */
diff --git a/src/Form/Extension/ToolbarFormExtension.php b/src/Form/Extension/ToolbarFormExtension.php
index 17cebda6..0566e373 100644
--- a/src/Form/Extension/ToolbarFormExtension.php
+++ b/src/Form/Extension/ToolbarFormExtension.php
@@ -9,6 +9,7 @@
 
 namespace App\Form\Extension;
 
+use App\Form\Helper\ToolbarHelper;
 use App\Form\Toolbar\ExportToolbarForm;
 use App\Form\Toolbar\InvoiceToolbarForm;
 use App\Form\Toolbar\InvoiceToolbarSimpleForm;
@@ -18,22 +19,16 @@ use App\Form\Toolbar\UserToolbarForm;
 use App\Reporting\MonthlyUserListForm;
 use App\Reporting\WeeklyUserListForm;
 use App\Reporting\YearlyUserListForm;
-use App\User\TeamService;
-use App\User\UserService;
 use Symfony\Component\Form\AbstractTypeExtension;
 use Symfony\Component\Form\FormBuilderInterface;
 
 final class ToolbarFormExtension extends AbstractTypeExtension
 {
-    private $userService;
-    private $teamService;
-    private $teamNames = ['team', 'teams', 'searchTeams'];
-    private $userNames = ['user', 'users'];
+    private $toolbarHelper;
 
-    public function __construct(UserService $userService, TeamService $teamService)
+    public function __construct(ToolbarHelper $toolbarHelper)
     {
-        $this->userService = $userService;
-        $this->teamService = $teamService;
+        $this->toolbarHelper = $toolbarHelper;
     }
 
     public static function getExtendedTypes(): iterable
@@ -53,36 +48,6 @@ final class ToolbarFormExtension extends AbstractTypeExtension
 
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
-        $deleteUser = false;
-        foreach ($this->userNames as $name) {
-            if ($builder->has($name) && $this->userService->countUser(true) < 2) {
-                $deleteUser = true;
-                break;
-            }
-        }
-
-        if ($deleteUser) {
-            foreach ($this->userNames as $name) {
-                if ($builder->has($name)) {
-                    $builder->remove($name);
-                }
-            }
-        }
-
-        $deleteTeams = false;
-        foreach ($this->teamNames as $name) {
-            if ($builder->has($name) && !$this->teamService->hasTeams()) {
-                $deleteTeams = true;
-                break;
-            }
-        }
-
-        if ($deleteTeams) {
-            foreach ($this->teamNames as $name) {
-                if ($builder->has($name)) {
-                    $builder->remove($name);
-                }
-            }
-        }
+        $this->toolbarHelper->cleanupForm($builder);
     }
 }
diff --git a/src/Form/Helper/ToolbarHelper.php b/src/Form/Helper/ToolbarHelper.php
new file mode 100644
index 00000000..4a4c687d
--- /dev/null
+++ b/src/Form/Helper/ToolbarHelper.php
@@ -0,0 +1,63 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Form\Helper;
+
+use App\User\TeamService;
+use App\User\UserService;
+use Symfony\Component\Form\FormBuilderInterface;
+
+final class ToolbarHelper
+{
+    private $userService;
+    private $teamService;
+    private $teamNames = ['team', 'teams', 'searchTeams'];
+    private $userNames = ['user', 'users'];
+
+    public function __construct(UserService $userService, TeamService $teamService)
+    {
+        $this->userService = $userService;
+        $this->teamService = $teamService;
+    }
+
+    public function cleanupForm(FormBuilderInterface $builder)
+    {
+        $deleteUser = false;
+        foreach ($this->userNames as $name) {
+            if ($builder->has($name) && $this->userService->countUser(true) < 2) {
+                $deleteUser = true;
+                break;
+            }
+        }
+
+        if ($deleteUser) {
+            foreach ($this->userNames as $name) {
+                if ($builder->has($name)) {
+                    $builder->remove($name);
+                }
+            }
+        }
+
+        $deleteTeams = false;
+        foreach ($this->teamNames as $name) {
+            if ($builder->has($name) && !$this->teamService->hasTeams()) {
+                $deleteTeams = true;
+                break;
+            }
+        }
+
+        if ($deleteTeams) {
+            foreach ($this->teamNames as $name) {
+                if ($builder->has($name)) {
+                    $builder->remove($name);
+                }
+            }
+        }
+    }
+}
diff --git a/src/Form/InvoiceTemplateForm.php b/src/Form/InvoiceTemplateForm.php
index 12b5526a..e73f877f 100644
--- a/src/Form/InvoiceTemplateForm.php
+++ b/src/Form/InvoiceTemplateForm.php
@@ -68,7 +68,7 @@ class InvoiceTemplateForm extends AbstractType
             ])
             ->add('vat', NumberType::class, [
                 'label' => 'label.tax_rate',
-                'scale' => 2,
+                'scale' => 3,
             ])
             ->add('renderer', InvoiceRendererType::class)
             ->add('calculator', InvoiceCalculatorType::class)
diff --git a/tests/Controller/InvoiceControllerTest.php b/tests/Controller/InvoiceControllerTest.php
index 4f35f7c2..7faabbbc 100644
--- a/tests/Controller/InvoiceControllerTest.php
+++ b/tests/Controller/InvoiceControllerTest.php
@@ -107,6 +107,7 @@ class InvoiceControllerTest extends ControllerBaseTest
                 'company' => 'Company name',
                 'renderer' => 'default',
                 'calculator' => 'default',
+                'vat' => '27,937',
             ]
         ]);
 
@@ -114,6 +115,14 @@ class InvoiceControllerTest extends ControllerBaseTest
         $client->followRedirect();
         $this->assertTrue($client->getResponse()->isSuccessful());
         $this->assertHasFlashSuccess($client);
+
+        $template = $this->getEntityManager()->getRepository(InvoiceTemplate::class)->findAll()[0];
+        self::assertEquals('Test', $template->getName());
+        self::assertEquals('Test invoice template', $template->getTitle());
+        self::assertEquals('Company name', $template->getCompany());
+        self::assertEquals('default', $template->getRenderer());
+        self::assertEquals('default', $template->getCalculator());
+        self::assertEquals('27.937', $template->getVat());
     }
 
     public function testCopyTemplateAction()