diff --git a/config/services.yaml b/config/services.yaml
index 3a1f526..de5534d 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -87,3 +87,4 @@ services:
                 - 'App\Form\Service\ParticipantParkingFieldHandler'
                 - 'App\Form\Service\ParticipantRentalInsuranceFieldHandler'
                 - 'App\Form\Service\ParticipantLicensePlateFieldHandler'
+                - 'App\Form\Service\ParticipantInsuranceFieldHandler'
diff --git a/docs/insurance-booking-implementation-plan.md b/docs/insurance-booking-implementation-plan.md
index 4c86f5f..1afe00e 100644
--- a/docs/insurance-booking-implementation-plan.md
+++ b/docs/insurance-booking-implementation-plan.md
@@ -14,13 +14,19 @@ This document outlines the complete implementation plan for making travel insura
 - **Field Handler Architecture**: Existing pattern for dynamic form fields
 - **HTMX Integration**: Real-time form updates infrastructure
 
-### ❌ Missing Implementation
-- Insurance subtype parsing and type resolution system
-- Participant insurance field and selection logic
-- Insurance matching service with criteria validation
-- Auto-reselection when participant price changes
-- Form integration and field handlers
+### ✅ Recently Completed
+- **Phase 1**: Insurance subtype parsing and type resolution system ✅
+- **Phase 2**: Enhanced age calculation with reference date support ✅
+- **Phase 3**: Insurance matching service with comprehensive criteria validation ✅
+- **Phase 4**: ParticipantDto enhancement with insurance property ✅
+- **Phase 5**: Form field handler for insurance selection processing ✅
+
+### ❌ Remaining Implementation
+- Form integration and field configuration
+- Controller integration and data handling
 - Frontend templates and UX
+- Auto-reselection when participant price changes
+- Advanced features and applicant control
 
 ## Key Technical Discoveries
 
@@ -36,25 +42,25 @@ This document outlines the complete implementation plan for making travel insura
 
 ## Implementation Phases
 
-### Phase 1: Insurance Type System
+### Phase 1: Insurance Type System ✅ COMPLETED
 **Goal**: Add type resolution capability to distinguish insurance types
 
-#### 1.1 Extend Insurance Model
-- [ ] Add `subType` property to `Insurance` model (from XML `unterart`)
-- [ ] Add computed `type` property (resolved via service)
-- [ ] Update serialization groups if needed
+#### 1.1 Extend Insurance Model ✅
+- [x] Add `subType` property to `Insurance` model (from XML `unterart`)
+- [x] Add computed `type` property (resolved via service)
+- [x] Update serialization groups if needed
 
-#### 1.2 Update Insurance Parser
-- [ ] Modify `InsuranceParser::parseInsuranceNode()` to parse `unterart` attribute
-- [ ] Add subtype to individual insurance parsing
-- [ ] Ensure package parsing maintains existing functionality
+#### 1.2 Update Insurance Parser ✅
+- [x] Modify `InsuranceParser::parseInsuranceNode()` to parse `unterart` attribute
+- [x] Add subtype to individual insurance parsing
+- [x] Ensure package parsing maintains existing functionality
 
-#### 1.3 Create Insurance Type Resolver
-- [ ] Create `InsuranceTypeResolver` service
-- [ ] Implement type resolution for individual insurances
-- [ ] Implement package type resolution via contained insurance analysis
-- [ ] Define type constants: `TRAVEL_CANCELLATION`, `TRAVEL_PROTECTION`, etc.
-- [ ] Handle family variants using `familyInsurance` boolean
+#### 1.3 Create Insurance Type Resolver ✅
+- [x] Create `InsuranceTypeResolver` service
+- [x] Implement type resolution for individual insurances
+- [x] Implement package type resolution via contained insurance analysis
+- [x] Define type constants: `TRAVEL_CANCELLATION`, `TRAVEL_PROTECTION`, etc.
+- [x] Handle family variants using `familyInsurance` boolean
 
 ```php
 // Type Constants
@@ -62,27 +68,28 @@ const TRAVEL_CANCELLATION = 'TRAVEL_CANCELLATION';
 const TRAVEL_CANCELLATION_FAMILY = 'TRAVEL_CANCELLATION_FAMILY';
 const TRAVEL_PROTECTION = 'TRAVEL_PROTECTION';
 const TRAVEL_PROTECTION_FAMILY = 'TRAVEL_PROTECTION_FAMILY';
+const DEDUCTIBLE = 'DEDUCTIBLE';
 ```
 
-#### 1.4 Testing
-- [ ] Create `InsuranceTypeResolverTest`
-- [ ] Test individual insurance type resolution
-- [ ] Test package type resolution
-- [ ] Test family variant detection
-- [ ] Verify existing insurance parsing still works
+#### 1.4 Testing ✅
+- [x] Create `InsuranceTypeResolverTest`
+- [x] Test individual insurance type resolution
+- [x] Test package type resolution
+- [x] Test family variant detection
+- [x] Verify existing insurance parsing still works
 
-### Phase 2: Enhanced Age Calculation
+### Phase 2: Enhanced Age Calculation ✅ COMPLETED
 **Goal**: Support age calculation at specific dates (travel start date)
 
-#### 2.1 Update ParticipantDto
-- [ ] Add `getAgeAtDate(\DateTimeImmutable $referenceDate): ?int` method
-- [ ] Keep existing `getAge(): ?int` for backward compatibility
-- [ ] Ensure proper null handling for missing birth dates
+#### 2.1 Update ParticipantDto ✅
+- [x] Enhanced existing `getAge()` method with optional reference date parameter
+- [x] Keep existing `getAge(): ?int` for backward compatibility
+- [x] Ensure proper null handling for missing birth dates
 
-#### 2.2 Testing
-- [ ] Add tests for `getAgeAtDate()` method
-- [ ] Test edge cases (leap years, same day, etc.)
-- [ ] Verify existing age calculation still works
+#### 2.2 Testing ✅
+- [x] Add comprehensive tests for reference date age calculation
+- [x] Test edge cases (leap years, same day, etc.)
+- [x] Verify existing age calculation still works
 
 ### Phase 3: Insurance Matching Service
 **Goal**: Implement comprehensive insurance matching with all criteria
diff --git a/src/BusProNet/Model/Travel.php b/src/BusProNet/Model/Travel.php
index 82219c6..1463a30 100644
--- a/src/BusProNet/Model/Travel.php
+++ b/src/BusProNet/Model/Travel.php
@@ -86,6 +86,12 @@ class Travel
     #[Groups(['api:single'])]
     public ?Guide $guide = null;
 
+    /**
+     * @var array<Insurance> Available insurances for this travel package
+     */
+    #[Groups(['api:single'])]
+    public array $insurances = [];
+
     /**
      * Retrieves additional services filtered by subtype, availability, and optionally by travel date range.
      *
diff --git a/src/Form/Service/ParticipantInsuranceFieldHandler.php b/src/Form/Service/ParticipantInsuranceFieldHandler.php
new file mode 100644
index 0000000..148b548
--- /dev/null
+++ b/src/Form/Service/ParticipantInsuranceFieldHandler.php
@@ -0,0 +1,166 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Form\Service;
+
+use App\BusProNet\Model\Insurance;
+use App\Form\Model\BookingDtoInterface;
+use App\Form\Service\Abstract\AbstractParticipantFieldHandler;
+use App\Service\InsuranceMatchingService;
+
+/**
+ * Handles processing of the insurance field for booking participants.
+ *
+ * This handler manages insurance selections for individual participants in the booking
+ * creation process. It processes the insurance field from form submissions,
+ * validates the selection against participant eligibility criteria, and updates
+ * the participant DTO with the valid insurance selection.
+ *
+ * The insurance field depends on dateOfBirth for age-based eligibility calculations
+ * and uses the InsuranceMatchingService to ensure only eligible insurances can be selected.
+ *
+ * Dependencies: dateOfBirth (for age evaluation and insurance eligibility)
+ */
+class ParticipantInsuranceFieldHandler extends AbstractParticipantFieldHandler
+{
+    public function __construct(
+        private readonly InsuranceMatchingService $insuranceMatchingService,
+    ) {
+    }
+
+    /**
+     * Returns the form field name this handler processes.
+     *
+     * @return string The field name 'insurance'
+     */
+    public function getFieldName(): string
+    {
+        return 'insurance';
+    }
+
+    /**
+     * Returns the field dependencies for proper processing order.
+     *
+     * This handler depends on dateOfBirth for age evaluation and insurance eligibility.
+     *
+     * @return string[] Array containing 'dateOfBirth' dependency
+     */
+    public function getDependencies(): array
+    {
+        return ['dateOfBirth'];
+    }
+
+    /**
+     * Determines if this handler should process the field based on submitted data.
+     *
+     * For insurance selection fields, we always need to process to handle cases
+     * where the selection is cleared (field not present in data). This ensures
+     * the participant DTO is updated with null when no insurance is selected.
+     *
+     * @param array<string, mixed> $submittedData    The submitted participant form data
+     * @param int                  $participantIndex The index of the participant being processed
+     *
+     * @return bool Always returns true for insurance selection fields
+     */
+    public function shouldProcess(array $submittedData, int $participantIndex): bool
+    {
+        return true; // Always process to handle deselection cases
+    }
+
+    /**
+     * Processes the insurance field for a specific participant.
+     *
+     * This method extracts the insurance selection from submitted form data,
+     * validates the selection against the participant's eligibility criteria,
+     * and updates the participant DTO with the valid selection. If the insurance
+     * is no longer appropriate for the participant, it is automatically cleared.
+     *
+     * @param array<string, mixed> $submittedData    The submitted participant form data
+     * @param BookingDtoInterface  $bookingDto       The booking DTO to update (create or edit)
+     * @param int                  $participantIndex The index of the participant being processed
+     */
+    public function processField(array $submittedData, BookingDtoInterface $bookingDto, int $participantIndex): void
+    {
+        $participant = $bookingDto->getParticipant($participantIndex);
+        if (null === $participant) {
+            return;
+        }
+
+        $insuranceId = $submittedData['insurance'] ?? null;
+
+        // Clear insurance if no selection
+        if (null === $insuranceId || '' === $insuranceId) {
+            $participant->insurance = null;
+
+            return;
+        }
+
+        // Find the selected insurance from available travel insurances
+        $availableInsurances = $bookingDto->travel->insurances ?? [];
+        $selectedInsurance = $this->findInsuranceById($availableInsurances, $insuranceId);
+
+        if (null === $selectedInsurance) {
+            $participant->insurance = null;
+
+            return;
+        }
+
+        // Validate insurance eligibility for this participant
+        $eligibleInsurances = $this->insuranceMatchingService->getEligibleInsurances(
+            [$selectedInsurance],
+            $participant,
+            $bookingDto
+        );
+
+        // Set insurance only if it's eligible for this participant
+        $participant->insurance = !empty($eligibleInsurances) ? $selectedInsurance : null;
+    }
+
+    /**
+     * Returns field state modifications that should be applied after processing.
+     *
+     * Currently no field state modifications are needed for insurance selection.
+     *
+     * @param array<string, mixed> $submittedData    The submitted participant form data
+     * @param BookingDtoInterface  $bookingDto       The booking DTO (potentially modified by processing)
+     * @param int                  $participantIndex The participant index being processed
+     *
+     * @return array<string, array<string, mixed>> Empty array - no field state modifications
+     */
+    public function getFieldStateModifications(array $submittedData, BookingDtoInterface $bookingDto, int $participantIndex): array
+    {
+        return [];
+    }
+
+    /**
+     * Returns field names whose state is affected by this handler's processing.
+     *
+     * Currently no other fields are affected by insurance selection.
+     *
+     * @return string[] Empty array - no other fields are affected
+     */
+    public function getAffectedFieldNames(): array
+    {
+        return [];
+    }
+
+    /**
+     * Finds an insurance by ID from the available insurances array.
+     *
+     * @param array<Insurance> $insurances  Array of available insurances
+     * @param string|int       $insuranceId The insurance ID to find
+     *
+     * @return Insurance|null The found insurance or null if not found
+     */
+    private function findInsuranceById(array $insurances, string|int $insuranceId): ?Insurance
+    {
+        foreach ($insurances as $insurance) {
+            if ($insurance->id === $insuranceId || (string) $insurance->id === (string) $insuranceId) {
+                return $insurance;
+            }
+        }
+
+        return null;
+    }
+}
diff --git a/tests/Form/Service/ParticipantInsuranceFieldHandlerTest.php b/tests/Form/Service/ParticipantInsuranceFieldHandlerTest.php
new file mode 100644
index 0000000..86e4602
--- /dev/null
+++ b/tests/Form/Service/ParticipantInsuranceFieldHandlerTest.php
@@ -0,0 +1,236 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Form\Service;
+
+use App\BusProNet\Model\Insurance;
+use App\BusProNet\Model\Travel;
+use App\Form\Model\BookingCreateDto;
+use App\Form\Model\ParticipantDto;
+use App\Form\Service\ParticipantInsuranceFieldHandler;
+use App\Service\InsuranceMatchingService;
+use PHPUnit\Framework\TestCase;
+
+class ParticipantInsuranceFieldHandlerTest extends TestCase
+{
+    private ParticipantInsuranceFieldHandler $handler;
+    private InsuranceMatchingService $insuranceMatchingService;
+
+    protected function setUp(): void
+    {
+        $this->insuranceMatchingService = $this->createMock(InsuranceMatchingService::class);
+        $this->handler = new ParticipantInsuranceFieldHandler($this->insuranceMatchingService);
+    }
+
+    public function testGetFieldName(): void
+    {
+        $this->assertEquals('insurance', $this->handler->getFieldName());
+    }
+
+    public function testGetDependencies(): void
+    {
+        $dependencies = $this->handler->getDependencies();
+
+        $this->assertEquals(['dateOfBirth'], $dependencies);
+    }
+
+    public function testShouldProcessAlwaysReturnsTrue(): void
+    {
+        $result = $this->handler->shouldProcess([], 0);
+
+        $this->assertTrue($result);
+    }
+
+    public function testProcessFieldSetsInsuranceToNullWhenNoParticipant(): void
+    {
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn(null);
+
+        $this->handler->processField(['insurance' => '123'], $bookingDto, 0);
+
+        // No assertions needed - just ensure no exceptions are thrown
+        $this->addToAssertionCount(1);
+    }
+
+    public function testProcessFieldClearsInsuranceWhenNullSelection(): void
+    {
+        $participant = new ParticipantDto();
+        $participant->insurance = $this->createInsurance('123');
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+
+        $this->handler->processField(['insurance' => null], $bookingDto, 0);
+
+        $this->assertNull($participant->insurance);
+    }
+
+    public function testProcessFieldClearsInsuranceWhenEmptyStringSelection(): void
+    {
+        $participant = new ParticipantDto();
+        $participant->insurance = $this->createInsurance('123');
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+
+        $this->handler->processField(['insurance' => ''], $bookingDto, 0);
+
+        $this->assertNull($participant->insurance);
+    }
+
+    public function testProcessFieldClearsInsuranceWhenMissingFromData(): void
+    {
+        $participant = new ParticipantDto();
+        $participant->insurance = $this->createInsurance('123');
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+
+        $this->handler->processField([], $bookingDto, 0);
+
+        $this->assertNull($participant->insurance);
+    }
+
+    public function testProcessFieldClearsInsuranceWhenNotFoundInAvailableInsurances(): void
+    {
+        $participant = new ParticipantDto();
+        $travel = new Travel();
+        $travel->insurances = [$this->createInsurance('456')]; // Different ID
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+        $bookingDto->travel = $travel;
+
+        $this->handler->processField(['insurance' => '123'], $bookingDto, 0);
+
+        $this->assertNull($participant->insurance);
+    }
+
+    public function testProcessFieldSetsInsuranceWhenEligible(): void
+    {
+        $insurance = $this->createInsurance('123');
+        $participant = new ParticipantDto();
+        $travel = new Travel();
+        $travel->insurances = [$insurance];
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+        $bookingDto->travel = $travel;
+
+        $this->insuranceMatchingService
+            ->expects($this->once())
+            ->method('getEligibleInsurances')
+            ->with([$insurance], $participant, $bookingDto)
+            ->willReturn([$insurance]);
+
+        $this->handler->processField(['insurance' => '123'], $bookingDto, 0);
+
+        $this->assertSame($insurance, $participant->insurance);
+    }
+
+    public function testProcessFieldClearsInsuranceWhenNotEligible(): void
+    {
+        $insurance = $this->createInsurance('123');
+        $participant = new ParticipantDto();
+        $travel = new Travel();
+        $travel->insurances = [$insurance];
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+        $bookingDto->travel = $travel;
+
+        $this->insuranceMatchingService
+            ->expects($this->once())
+            ->method('getEligibleInsurances')
+            ->with([$insurance], $participant, $bookingDto)
+            ->willReturn([]); // Not eligible
+
+        $this->handler->processField(['insurance' => '123'], $bookingDto, 0);
+
+        $this->assertNull($participant->insurance);
+    }
+
+    public function testProcessFieldWorksWithStringAndIntegerIds(): void
+    {
+        $insurance = $this->createInsurance(123); // Integer ID
+        $participant = new ParticipantDto();
+        $travel = new Travel();
+        $travel->insurances = [$insurance];
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+        $bookingDto->travel = $travel;
+
+        $this->insuranceMatchingService
+            ->expects($this->once())
+            ->method('getEligibleInsurances')
+            ->willReturn([$insurance]);
+
+        $this->handler->processField(['insurance' => '123'], $bookingDto, 0); // String selection
+
+        $this->assertSame($insurance, $participant->insurance);
+    }
+
+    public function testProcessFieldHandlesEmptyInsurancesArray(): void
+    {
+        $participant = new ParticipantDto();
+        $travel = new Travel();
+        $travel->insurances = []; // No insurances available
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+        $bookingDto->travel = $travel;
+
+        $this->handler->processField(['insurance' => '123'], $bookingDto, 0);
+
+        $this->assertNull($participant->insurance);
+    }
+
+    public function testProcessFieldHandlesNullInsurancesProperty(): void
+    {
+        $participant = new ParticipantDto();
+        $travel = new Travel();
+        // $travel->insurances not set, defaults to []
+
+        $bookingDto = $this->createMockBookingDto();
+        $bookingDto->method('getParticipant')->with(0)->willReturn($participant);
+        $bookingDto->travel = $travel;
+
+        $this->handler->processField(['insurance' => '123'], $bookingDto, 0);
+
+        $this->assertNull($participant->insurance);
+    }
+
+    public function testGetFieldStateModificationsReturnsEmptyArray(): void
+    {
+        $bookingDto = $this->createMockBookingDto();
+
+        $result = $this->handler->getFieldStateModifications([], $bookingDto, 0);
+
+        $this->assertIsArray($result);
+        $this->assertEmpty($result);
+    }
+
+    public function testGetAffectedFieldNamesReturnsEmptyArray(): void
+    {
+        $result = $this->handler->getAffectedFieldNames();
+
+        $this->assertIsArray($result);
+        $this->assertEmpty($result);
+    }
+
+    private function createInsurance(string|int $id, string $label = 'Test Insurance'): Insurance
+    {
+        $insurance = new Insurance();
+        $insurance->id = $id;
+        $insurance->label = $label;
+
+        return $insurance;
+    }
+
+    private function createMockBookingDto(): BookingCreateDto
+    {
+        return $this->createMock(BookingCreateDto::class);
+    }
+}