diff --git a/app/Filters/CreditFilters.php b/app/Filters/CreditFilters.php
index 83dc2c7781fd..bd17e34819a5 100644
--- a/app/Filters/CreditFilters.php
+++ b/app/Filters/CreditFilters.php
@@ -88,6 +88,11 @@ class CreditFilters extends QueryFilters
                           ->orWhere('credits.custom_value4', 'like', '%'.$filter.'%')
                           ->orWhereHas('client', function ($q) use ($filter) {
                               $q->where('name', 'like', '%'.$filter.'%');
+                          })
+                          ->orWhereHas('client.contacts', function ($q) use ($filter) {
+                              $q->where('first_name', 'like', '%'.$filter.'%')
+                                ->orWhere('last_name', 'like', '%'.$filter.'%')
+                                ->orWhere('email', 'like', '%'.$filter.'%');
                           });
         });
     }
diff --git a/app/Filters/InvoiceFilters.php b/app/Filters/InvoiceFilters.php
index deab3483fd8b..8ade4be3a6a1 100644
--- a/app/Filters/InvoiceFilters.php
+++ b/app/Filters/InvoiceFilters.php
@@ -116,6 +116,11 @@ class InvoiceFilters extends QueryFilters
                           ->orWhere('custom_value4', 'like', '%'.$filter.'%')
                           ->orWhereHas('client', function ($q) use ($filter) {
                               $q->where('name', 'like', '%'.$filter.'%');
+                          })
+                          ->orWhereHas('client.contacts', function ($q) use ($filter) {
+                              $q->where('first_name', 'like', '%'.$filter.'%')
+                                ->orWhere('last_name', 'like', '%'.$filter.'%')
+                                ->orWhere('email', 'like', '%'.$filter.'%');
                           });
         });
     }
diff --git a/app/Filters/PaymentFilters.php b/app/Filters/PaymentFilters.php
index 38381ed786bb..b6c82430baad 100644
--- a/app/Filters/PaymentFilters.php
+++ b/app/Filters/PaymentFilters.php
@@ -44,7 +44,12 @@ class PaymentFilters extends QueryFilters
                           ->orWhere('custom_value4', 'like', '%'.$filter.'%')
                           ->orWhereHas('client', function ($q) use ($filter) {
                                 $q->where('name', 'like', '%'.$filter.'%');
-                            });
+                            })
+                            ->orWhereHas('client.contacts', function ($q) use ($filter) {
+                              $q->where('first_name', 'like', '%'.$filter.'%')
+                                ->orWhere('last_name', 'like', '%'.$filter.'%')
+                                ->orWhere('email', 'like', '%'.$filter.'%');
+                          });
         });
     }
 
diff --git a/app/Filters/QuoteFilters.php b/app/Filters/QuoteFilters.php
index a08c6aa09418..26a6b3f0ae2e 100644
--- a/app/Filters/QuoteFilters.php
+++ b/app/Filters/QuoteFilters.php
@@ -40,7 +40,12 @@ class QuoteFilters extends QueryFilters
                   ->orWhere('custom_value4', 'like', '%'.$filter.'%')
                   ->orWhereHas('client', function ($q) use ($filter) {
                       $q->where('name', 'like', '%'.$filter.'%');
-                  });
+                  })
+                  ->orWhereHas('client.contacts', function ($q) use ($filter) {
+                              $q->where('first_name', 'like', '%'.$filter.'%')
+                                ->orWhere('last_name', 'like', '%'.$filter.'%')
+                                ->orWhere('email', 'like', '%'.$filter.'%');
+                          });
         });
     }
 
diff --git a/app/Filters/RecurringInvoiceFilters.php b/app/Filters/RecurringInvoiceFilters.php
index 03a66b11f127..71fcca9d101f 100644
--- a/app/Filters/RecurringInvoiceFilters.php
+++ b/app/Filters/RecurringInvoiceFilters.php
@@ -42,7 +42,12 @@ class RecurringInvoiceFilters extends QueryFilters
                     ->orWhere('custom_value4', 'like', '%'.$filter.'%')
                     ->orWhereHas('client', function ($q) use ($filter) {
                         $q->where('name', 'like', '%'.$filter.'%');
-                    });
+                    })
+                    ->orWhereHas('client.contacts', function ($q) use ($filter) {
+                              $q->where('first_name', 'like', '%'.$filter.'%')
+                                ->orWhere('last_name', 'like', '%'.$filter.'%')
+                                ->orWhere('email', 'like', '%'.$filter.'%');
+                          });
         });
     }
 
diff --git a/app/Filters/TaskFilters.php b/app/Filters/TaskFilters.php
index 3e09a0d2addf..0c564af5a4f6 100644
--- a/app/Filters/TaskFilters.php
+++ b/app/Filters/TaskFilters.php
@@ -45,7 +45,12 @@ class TaskFilters extends QueryFilters
                             })
                           ->orWhereHas('client', function ($q) use ($filter) {
                                 $q->where('name', 'like', '%'.$filter.'%');
-                            });
+                            })
+                            ->orWhereHas('client.contacts', function ($q) use ($filter) {
+                              $q->where('first_name', 'like', '%'.$filter.'%')
+                                ->orWhere('last_name', 'like', '%'.$filter.'%')
+                                ->orWhere('email', 'like', '%'.$filter.'%');
+                          });
         });
     }