diff --git a/.phpunit.result.cache b/.phpunit.result.cache
new file mode 100644
index 0000000..da9cd8d
--- /dev/null
+++ b/.phpunit.result.cache
@@ -0,0 +1 @@
+{"version":2,"defects":{"Tests\\Feature\\MyWinningsTest::test_mywinnings_form_is_accessible":8,"Tests\\Feature\\MyWinningsTest::test_mywinnings_results_show_correct_data":8,"Tests\\Feature\\MyWinningsTest::test_mywinnings_invalid_bidder_shows_error":8},"times":{"Tests\\Unit\\PhoneFormattingTest::it_formats_a_10_digit_phone_number":0.018,"Tests\\Unit\\PhoneFormattingTest::it_strips_non_numeric_characters_before_formatting":0,"Tests\\Unit\\PhoneFormattingTest::it_returns_original_value_if_not_10_digits":0,"Tests\\Unit\\PhoneFormattingTest::bidder_model_accessor_formats_phone_number":0.003}}
\ No newline at end of file
diff --git a/app/Filament/Resources/BiddersResource.php b/app/Filament/Resources/BiddersResource.php
index 274c3a5..a99c4f3 100644
--- a/app/Filament/Resources/BiddersResource.php
+++ b/app/Filament/Resources/BiddersResource.php
@@ -57,7 +57,8 @@ class BiddersResource extends Resource
                 TextColumn::make('bidder_city')->label('City')->sortable(),
                 TextColumn::make('bidder_state')->label('State')->sortable(),
                 TextColumn::make('bidder_zip')->label('Zip')->sortable(),
-                TextColumn::make('bidder_phone')->label('Phone Number')->sortable(),
+                TextColumn::make('bidder_phone')->label('Phone Number')->sortable()
+                    ->formatStateUsing(fn ($state) => \App\Helpers\PhoneHelper::format($state)),
                 TextColumn::make('bidder_email')->label('Email')->sortable(),
             ])
             ->filters([
diff --git a/app/Helpers/PhoneHelper.php b/app/Helpers/PhoneHelper.php
new file mode 100644
index 0000000..6421b52
--- /dev/null
+++ b/app/Helpers/PhoneHelper.php
@@ -0,0 +1,14 @@
+<?php
+namespace App\Helpers;
+
+class PhoneHelper
+{
+    public static function format($phone)
+    {
+        $phone = preg_replace('/[^0-9]/', '', $phone);
+        if (strlen($phone) == 10) {
+            return preg_replace('/([0-9]{3})([0-9]{3})([0-9]{4})/', '$1-$2-$3', $phone);
+        }
+        return $phone;
+    }
+}
diff --git a/resources/views/bidderlist.blade.php b/resources/views/bidderlist.blade.php
index 10f40fe..877265f 100644
--- a/resources/views/bidderlist.blade.php
+++ b/resources/views/bidderlist.blade.php
@@ -66,7 +66,7 @@
                 {{ $bidderlist_result->bidder_zip }}
               </td>
               <td>
-                {{ $bidderlist_result->bidder_phone }}
+                {{ \App\Helpers\PhoneHelper::format($bidderlist_result->bidder_phone) }}
               </td>
               <td>
                 {{ $bidderlist_result->bidder_email }}
diff --git a/resources/views/checkout.blade.php b/resources/views/checkout.blade.php
index ae383f1..cc9299e 100644
--- a/resources/views/checkout.blade.php
+++ b/resources/views/checkout.blade.php
@@ -33,7 +33,7 @@
                       Name: {{ $checkout_info_result->bidder_fname }} {{ $checkout_info_result->bidder_lname }}
                     </th>
                     <th colspan="2">
-                      Phone Number: {{ $checkout_info_result->bidder_phone }}
+                      Phone Number: {{ \App\Helpers\PhoneHelper::format($checkout_info_result->bidder_phone) }}
                     </th>
                   </tr>
                   <tr>
diff --git a/resources/views/checkout_complete.blade.php b/resources/views/checkout_complete.blade.php
index 2f0fb5c..6acf915 100644
--- a/resources/views/checkout_complete.blade.php
+++ b/resources/views/checkout_complete.blade.php
@@ -51,7 +51,7 @@
                     Name: {{ $checkout_info_result->bidder_fname }} {{ $checkout_info_result->bidder_lname }}
                   </th>
                   <th colspan="2">
-                    Phone Number: {{ $checkout_info_result->bidder_phone }}
+                    Phone Number: {{ \App\Helpers\PhoneHelper::format($checkout_info_result->bidder_phone) }}
                   </th>
                 </tr>
                 <tr>
diff --git a/resources/views/checkout_complete_list.blade.php b/resources/views/checkout_complete_list.blade.php
index 8094cb8..3b25e63 100644
--- a/resources/views/checkout_complete_list.blade.php
+++ b/resources/views/checkout_complete_list.blade.php
@@ -70,7 +70,7 @@
                       {{ $checkout_complete_result->bidder_zip }}
                     </td>
                     <td>
-                      {{ $checkout_complete_result->bidder_phone }}
+                      {{ \App\Helpers\PhoneHelper::format($checkout_complete_result->bidder_phone) }}
                     </td>
                     <td>
                       {{ $checkout_complete_result->bidder_email }}
diff --git a/resources/views/finaltally.blade.php b/resources/views/finaltally.blade.php
index 46c2478..7c82e04 100644
--- a/resources/views/finaltally.blade.php
+++ b/resources/views/finaltally.blade.php
@@ -67,8 +67,7 @@
                   {{ $finaltally_result->bidder_zip }}
                 </td>
                 <td>
-                  {{ $finaltally_result->bidder_phone }}
-                </td>
+                  {{ \App\Helpers\PhoneHelper::format($finaltally_result->bidder_phone) }}                </td>
                 <td>
                   {{ $finaltally_result->bidder_email }}
                 </td>
diff --git a/resources/views/receiptpdf.blade.php b/resources/views/receiptpdf.blade.php
index 8fd2529..057b54c 100644
--- a/resources/views/receiptpdf.blade.php
+++ b/resources/views/receiptpdf.blade.php
@@ -49,8 +49,7 @@
                     Name: {{ $checkout_info_result->bidder_fname }} {{ $checkout_info_result->bidder_lname }}
                   </td>
                   <td colspan="2">
-                    Phone Number: {{ $checkout_info_result->bidder_phone }}
-                  </td>
+                    Phone Number: {{ \App\Helpers\PhoneHelper::format($checkout_info_result->bidder_phone) }}                  </td>
                 </tr>
                 <tr>
                   <td>
diff --git a/resources/views/receiptpdf2.blade.php b/resources/views/receiptpdf2.blade.php
index e8c2554..72f50fe 100644
--- a/resources/views/receiptpdf2.blade.php
+++ b/resources/views/receiptpdf2.blade.php
@@ -49,8 +49,7 @@
                     Name: {{ $checkout_info_result->bidder_fname }} {{ $checkout_info_result->bidder_lname }}
                   </td>
                   <td colspan="2">
-                    Phone Number: {{ $checkout_info_result->bidder_phone }}
-                  </td>
+                    Phone Number: {{ \App\Helpers\PhoneHelper::format($checkout_info_result->bidder_phone) }}                  </td>
                 </tr>
                 <tr>
                   <td>
diff --git a/resources/views/showcarlist.blade.php b/resources/views/showcarlist.blade.php
index 05e1245..59ebae6 100644
--- a/resources/views/showcarlist.blade.php
+++ b/resources/views/showcarlist.blade.php
@@ -78,7 +78,7 @@
                 {{ $showcarlist_result->bidder_zip }}
               </td>
               <td>
-                {{ $showcarlist_result->bidder_phone }}
+                {{ \App\Helpers\PhoneHelper::format($showcarlist_result->bidder_phone) }}
               </td>
               <td>
                 {{ $showcarlist_result->bidder_email }}
diff --git a/resources/views/winnertotal.blade.php b/resources/views/winnertotal.blade.php
index 98ae756..308bd70 100644
--- a/resources/views/winnertotal.blade.php
+++ b/resources/views/winnertotal.blade.php
@@ -20,8 +20,7 @@
                 Name: {{ $winnertotal_info_result->bidder_fname }} {{ $winnertotal_info_result->bidder_lname }}
               </th>
               <th>
-                Phone Number: {{ $winnertotal_info_result->bidder_phone }}
-              </th>
+                Phone Number: {{ \App\Helpers\PhoneHelper::format($winnertotal_info_result->bidder_phone) }}              </th>
               <th>
                 Total: ${{ $winnertotal_info_result->total_cost }}
               </th>
diff --git a/tests/Unit/PhoneFormattingTest.php b/tests/Unit/PhoneFormattingTest.php
new file mode 100644
index 0000000..b116560
--- /dev/null
+++ b/tests/Unit/PhoneFormattingTest.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Tests\Unit;
+
+use Tests\TestCase;
+use App\Models\Bidders;
+use App\Helpers\PhoneHelper;
+
+class PhoneFormattingTest extends TestCase
+{
+    /** @test */
+    public function it_formats_a_10_digit_phone_number()
+    {
+        $formatted = PhoneHelper::format('1234567890');
+        $this->assertEquals('123-456-7890', $formatted);
+    }
+
+    /** @test */
+    public function it_strips_non_numeric_characters_before_formatting()
+    {
+        $formatted = PhoneHelper::format('(123) 456-7890');
+        $this->assertEquals('123-456-7890', $formatted);
+    }
+
+    /** @test */
+    public function it_returns_original_value_if_not_10_digits()
+    {
+        $formatted = PhoneHelper::format('1234567');
+        $this->assertEquals('1234567', $formatted);
+    }
+}