diff --git a/src/BusProNet/Model/Service.php b/src/BusProNet/Model/Service.php
index 751f093..5c8c011 100644
--- a/src/BusProNet/Model/Service.php
+++ b/src/BusProNet/Model/Service.php
@@ -79,4 +79,10 @@ class Service
 
     #[Groups(['api:single', 'api:list'])]
     public ?string $direction = null;
+
+    #[Groups(['api:single', 'api:list'])]
+    public ?int $ageFrom = null;
+
+    #[Groups(['api:single', 'api:list'])]
+    public ?int $ageTo = null;
 }
diff --git a/src/BusProNet/XmlLoader/TravelLoader.php b/src/BusProNet/XmlLoader/TravelLoader.php
index d20edd2..8c6d241 100644
--- a/src/BusProNet/XmlLoader/TravelLoader.php
+++ b/src/BusProNet/XmlLoader/TravelLoader.php
@@ -203,6 +203,8 @@ class TravelLoader extends AbstractLoader
             $service->price = $this
                 ->stringToFloat($this->getStringOrNullValue($serviceNode->filterXPath('//preis')));
             $service->status = $this->getStringOrNullValue($serviceNode->filterXPath('//status'));
+            $service->ageFrom = $this->getIntOrNullValue($serviceNode->filterXPath('//altervon'));
+            $service->ageTo = $this->getIntOrNullValue($serviceNode->filterXPath('//alterbis'));
 
             $additionalServices[$serviceId] = $service;
         });
diff --git a/src/BusProNet/XmlParser/ServicesParser.php b/src/BusProNet/XmlParser/ServicesParser.php
index 7142821..13e1d4d 100644
--- a/src/BusProNet/XmlParser/ServicesParser.php
+++ b/src/BusProNet/XmlParser/ServicesParser.php
@@ -34,6 +34,9 @@ class ServicesParser extends AbstractParser
                 $service->direction = $node->attr('richtung');
             }
 
+            $service->ageFrom = $this->getIntOrNullValue($node->filterXPath('//altervon'));
+            $service->ageTo = $this->getIntOrNullValue($node->filterXPath('//alterbis'));
+
             $services[$service->id] = $service;
         });
 
diff --git a/src/Form/Model/ParticipantData.php b/src/Form/Model/ParticipantData.php
index 2334f30..63158dd 100644
--- a/src/Form/Model/ParticipantData.php
+++ b/src/Form/Model/ParticipantData.php
@@ -68,6 +68,17 @@ class ParticipantData
         return $instance;
     }
 
+    public function getAge(): ?int
+    {
+        if (null === $this->dateOfBirth) {
+            return null;
+        }
+
+        $today = new \DateTimeImmutable('today');
+
+        return $this->dateOfBirth->diff($today)->y;
+    }
+
     public function isCanceled(): bool
     {
         return 'S' === $this->status;
diff --git a/src/Form/ParticipantType.php b/src/Form/ParticipantType.php
index 6a81ac8..580d6da 100644
--- a/src/Form/ParticipantType.php
+++ b/src/Form/ParticipantType.php
@@ -209,18 +209,20 @@ class ParticipantType extends AbstractType
                     'choices' => $options['selectable_courses'],
                 ]);
             }
-            if (0 < count($options['selectable_services'])) {
+            $additionalServices = $this->filterServicesByAge($participantData->getAge(), $options['selectable_services']);
+            if (0 < count($additionalServices)) {
                 $form->add('additionalServices', ChoiceType::class, [
                     ...$commonChoiceFieldOptions,
                     'label' => 'Zusatzleistungen',
-                    'choices' => $options['selectable_services'],
+                    'choices' => $additionalServices,
                 ]);
             }
-            if (0 < count($options['selectable_ski_passes'])) {
+            $skiPasses = $this->filterServicesByAge($participantData->getAge(), $options['selectable_ski_passes']);
+            if (0 < count($skiPasses)) {
                 $form->add('skiPass', ChoiceType::class, [
                     ...$commonChoiceFieldOptions,
                     'label' => 'Skipass',
-                    'choices' => $options['selectable_ski_passes'],
+                    'choices' => $skiPasses,
                 ]);
             }
             if (0 < count($options['selectable_board'])) {
@@ -336,8 +338,18 @@ class ParticipantType extends AbstractType
                 unset($data['pickup']);
             }
 
+            // filter selectable services by participant's age
+            if (false === isset($data['dateOfBirth'])) {
+                $allServices = $options['selectable_services'];
+            } else {
+                $dateOfBirth = new \DateTimeImmutable($data['dateOfBirth']);
+                $today = new \DateTimeImmutable('today');
+                $age = $dateOfBirth->diff($today)->y;
+                $allServices = $this->filterServicesByAge($age, $options['selectable_services']);
+            }
+
             // forcibly select mandatory services that potentially have been disabled in PRE_SET_DATA
-            $mandatoryServices = array_filter($options['selectable_services'], function (Service $service) use ($form) {
+            $mandatoryServices = array_filter($allServices, function (Service $service) use ($form) {
                 $participantIndex = $form->getData()->index;
 
                 return true === $service->mandatory
@@ -361,6 +373,26 @@ class ParticipantType extends AbstractType
         });
     }
 
+    private function filterServicesByAge(?int $age, array $services): array
+    {
+        if (null === $age) {
+            return $services;
+        }
+
+        return array_filter($services, function (Service $service) use ($age) {
+            if (null === $service->ageFrom && null === $service->ageTo) {
+                return true;
+            }
+            if (
+                null !== $service->ageTo && $service->ageTo >= $age
+                && null !== $service->ageFrom && $service->ageFrom <= $age
+            ) {
+                return true;
+            }
+            return false;
+        });
+    }
+
     public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([