diff --git a/app/Filters/InvoiceFilters.php b/app/Filters/InvoiceFilters.php
index 0343402a37b2..a9fa3c165dda 100644
--- a/app/Filters/InvoiceFilters.php
+++ b/app/Filters/InvoiceFilters.php
@@ -152,22 +152,22 @@ class InvoiceFilters extends QueryFilters
     {
 
         return $this->builder->where(function ($query) {
-            $query->whereIn('status_id', [Invoice::STATUS_PARTIAL, Invoice::STATUS_SENT])
-            ->where('is_deleted', 0)
-            ->where('balance', '>', 0)
-            ->where(function ($query) {
+            $query->whereIn('invoices.status_id', [Invoice::STATUS_PARTIAL, Invoice::STATUS_SENT])
+            ->where('invoices.is_deleted', 0)
+            ->where('invoices.balance', '>', 0)
+            ->orWhere(function ($query) {
 
-                $query->whereNull('due_date')
+                $query->whereNull('invoices.due_date')
                     ->orWhere(function ($q) {
-                        $q->where('due_date', '>=', now()->startOfDay()->subSecond())->where('partial', 0);
+                        $q->where('invoices.due_date', '>=', now()->startOfDay()->subSecond())->where('invoices.partial', 0);
                     })
                     ->orWhere(function ($q) {
-                        $q->where('partial_due_date', '>=', now()->startOfDay()->subSecond())->where('partial', '>', 0);
+                        $q->where('invoices.partial_due_date', '>=', now()->startOfDay()->subSecond())->where('invoices.partial', '>', 0);
                     });
 
             })
-            ->orderByRaw('ISNULL(due_date), due_date ' . 'desc')
-            ->orderByRaw('ISNULL(partial_due_date), partial_due_date ' . 'desc');
+            ->orderByRaw('ISNULL(invoices.due_date), invoices.due_date ' . 'desc')
+            ->orderByRaw('ISNULL(invoices.partial_due_date), invoices.partial_due_date ' . 'desc');
         });
 
     }
@@ -337,10 +337,10 @@ class InvoiceFilters extends QueryFilters
             // return $this->builder->orderByRaw('CAST(number AS UNSIGNED), number ' . $dir);
             // return $this->builder->orderByRaw("number REGEXP '^[A-Za-z]+$',CAST(number as SIGNED INTEGER),CAST(REPLACE(number,'-','')AS SIGNED INTEGER) ,number");
             // return $this->builder->orderByRaw('ABS(number) ' . $dir);
-            return $this->builder->orderByRaw("REGEXP_REPLACE(number,'[^0-9]+','')+0 " . $dir);
+            return $this->builder->orderByRaw("REGEXP_REPLACE(invoices.number,'[^0-9]+','')+0 " . $dir);
         }
 
-        return $this->builder->orderBy($sort_col[0], $dir);
+        return $this->builder->orderBy("{$this->builder->getQuery()->from}.".$sort_col[0], $dir);
     }
 
     /**
diff --git a/app/Filters/QueryFilters.php b/app/Filters/QueryFilters.php
index e5380da3eed6..7f98a1d14e93 100644
--- a/app/Filters/QueryFilters.php
+++ b/app/Filters/QueryFilters.php
@@ -273,20 +273,11 @@ abstract class QueryFilters
 
     public function filter_deleted_clients($value)
     {
-        // if ($value == 'true') {
-        //     return $this->builder->whereHas('client', function (Builder $query) {
-        //         $query->where('is_deleted', 0);
-        //     });
-        // }
-
-        if($value == 'true')
-         {
-            return $this->builder->leftJoin('clients', function($join) {
-                    $join->on("{$this->builder->getQuery()->from}.client_id", '=', 'clients.id')
-                        ->where('clients.is_deleted', 0);
+        if ($value == 'true') {
+            return $this->builder->whereHas('client', function (Builder $query) {
+                $query->where('is_deleted', 0);
             });
-
-         }
+        }
 
         return $this->builder;
     }
@@ -307,7 +298,7 @@ abstract class QueryFilters
     {
         return $this->builder->where(function ($query) {
             $query->whereHas('client', function ($sub_query) {
-                $sub_query->where('is_deleted', 0);
+                $sub_query->where('is_deleted', 0)->where('deleted_at', null);
             })->orWhere('client_id', null);
         });
     }
diff --git a/app/Http/Controllers/BaseController.php b/app/Http/Controllers/BaseController.php
index dbd7545e9dc1..74934925da28 100644
--- a/app/Http/Controllers/BaseController.php
+++ b/app/Http/Controllers/BaseController.php
@@ -937,7 +937,9 @@ class BaseController extends Controller
             } elseif (in_array($this->entity_type, [Design::class, GroupSetting::class, PaymentTerm::class, TaskStatus::class])) {
                 // nlog($this->entity_type);
             } else {
-                $query->where('user_id', '=', $user->id)->orWhere('assigned_user_id', $user->id);
+                $query->where(function ($q) use ($user){ //grouping these together improves query performance significantly)
+                    $q->where('user_id', '=', $user->id)->orWhere('assigned_user_id', $user->id);
+                });
             }
         }
 
diff --git a/app/Jobs/Util/ReminderJob.php b/app/Jobs/Util/ReminderJob.php
index 38b2009c4b2f..330b29c301ac 100644
--- a/app/Jobs/Util/ReminderJob.php
+++ b/app/Jobs/Util/ReminderJob.php
@@ -71,7 +71,7 @@ class ReminderJob implements ShouldQueue
                  ->whereHas('company', function ($query) {
                      $query->where('is_disabled', 0);
                  })
-                 ->with('invitations')->chunk(50, function ($invoices) {
+                 ->with('invitations')->chunk(200, function ($invoices) {
                      foreach ($invoices as $invoice) {
                          $this->sendReminderForInvoice($invoice);
                      }
diff --git a/app/Models/BaseModel.php b/app/Models/BaseModel.php
index 065e3c577cb2..8da00b9043da 100644
--- a/app/Models/BaseModel.php
+++ b/app/Models/BaseModel.php
@@ -129,7 +129,7 @@ class BaseModel extends Model
         /** @var \App\Models\User $user */
         $user = auth()->user();
 
-        $query->where('company_id', $user->companyId());
+        $query->where("{$query->getQuery()->from}.company_id", $user->companyId());
 
         return $query;
     }
diff --git a/app/Models/Quote.php b/app/Models/Quote.php
index f751590cc42e..4e3209843944 100644
--- a/app/Models/Quote.php
+++ b/app/Models/Quote.php
@@ -107,7 +107,6 @@ use Laracasts\Presenter\PresentableTrait;
  * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Document> $documents
  * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Backup> $history
  * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\QuoteInvitation> $invitations
- * @method static \Illuminate\Database\Eloquent\Builder|BaseModel company()
  * @mixin \Eloquent
  * @mixin \Illuminate\Database\Eloquent\Builder
  */
diff --git a/tests/Feature/ClientModelTest.php b/tests/Feature/ClientModelTest.php
index d82db842aa33..60421d6afa1b 100644
--- a/tests/Feature/ClientModelTest.php
+++ b/tests/Feature/ClientModelTest.php
@@ -11,7 +11,9 @@
 
 namespace Tests\Feature;
 
+use App\Models\Client;
 use App\Models\CompanyGateway;
+use App\Models\Invoice;
 use Illuminate\Foundation\Testing\DatabaseTransactions;
 use Tests\MockAccountData;
 use Tests\TestCase;
@@ -44,6 +46,122 @@ class ClientModelTest extends TestCase
 
     }
 
+    public function testNewWithoutAndDeletedClientFilters()
+    {
+
+        $this->invoice->amount = 10;
+        $this->invoice->balance = 10;
+        $this->invoice->status_id=2;
+        $this->invoice->date = now()->subDays(2);
+        $this->invoice->due_date = now()->addDays(2);
+        $this->invoice->save();
+
+        $cd = Client::factory()->create([
+            'company_id' => $this->company->id,
+            'user_id' => $this->user->id,
+        ]);
+
+        
+        $cd2 = Client::factory()->create([
+            'company_id' => $this->company->id,
+            'user_id' => $this->user->id,
+        ]);
+
+        $invoice_count = Invoice::where('company_id', $this->company->id)->count();
+
+        $this->assertGreaterThan(0, $invoice_count);
+
+        $i = Invoice::factory()->create([
+            'client_id' => $cd->id,
+            'user_id' => $this->user->id,
+            'company_id' => $this->company->id,
+            'status_id' => 2,
+            'amount' => 10,
+            'balance' => 10,
+            'date' => now()->subDays(2)->format('Y-m-d'),
+            'due_date' => now()->addDays(5)->format('Y-m-d'),
+        ]);
+
+
+        $i2 = Invoice::factory()->create([
+            'client_id' => $cd2->id,
+            'user_id' => $this->user->id,
+            'company_id' => $this->company->id,
+            'status_id' => 2,
+            'amount' => 10,
+            'balance' => 10,
+            'date' => now()->subDays(2)->format('Y-m-d'),
+            'due_date' => now()->addDays(5)->format('Y-m-d'),
+        ]);
+
+        $response = $this->withHeaders([
+        'X-API-SECRET' => config('ninja.api_secret'),
+        'X-API-TOKEN' => $this->token,
+        ])->get('/api/v1/invoices?status=active');
+
+        $response->assertStatus(200);
+        $arr = $response->json();
+
+        $this->assertEquals($invoice_count+2, count($arr['data']));
+
+        $response = $this->withHeaders([
+            'X-API-SECRET' => config('ninja.api_secret'),
+            'X-API-TOKEN' => $this->token,
+        ])->get('/api/v1/invoices?upcoming=true&status=active&include=client');
+
+        $response->assertStatus(200);
+        $arr = $response->json();
+
+        $this->assertEquals($invoice_count + 2, count($arr['data']));
+
+        $response = $this->withHeaders([
+            'X-API-SECRET' => config('ninja.api_secret'),
+            'X-API-TOKEN' => $this->token,
+        ])->get('/api/v1/invoices?upcoming=true&status=active&without_deleted_clients=true');
+
+        $response->assertStatus(200);
+        $arr = $response->json();
+
+        $this->assertEquals($invoice_count + 2, count($arr['data']));
+
+
+        $response = $this->withHeaders([
+            'X-API-SECRET' => config('ninja.api_secret'),
+            'X-API-TOKEN' => $this->token,
+        ])->get('/api/v1/invoices?upcoming=true&status=active&filter_deleted_clients=true');
+
+        $response->assertStatus(200);
+        $arr = $response->json();
+
+        $this->assertEquals($invoice_count + 2, count($arr['data']));
+
+        $cd2->is_deleted = true;
+        $cd2->save();
+
+        $response = $this->withHeaders([
+            'X-API-SECRET' => config('ninja.api_secret'),
+            'X-API-TOKEN' => $this->token,
+        ])->get('/api/v1/invoices?upcoming=true&status=active&without_deleted_clients=true');
+
+        $response->assertStatus(200);
+        $arr = $response->json();
+
+        $this->assertEquals($invoice_count + 1, count($arr['data']));
+
+
+        $response = $this->withHeaders([
+            'X-API-SECRET' => config('ninja.api_secret'),
+            'X-API-TOKEN' => $this->token,
+        ])->get('/api/v1/invoices?upcoming=true&status=active&filter_deleted_clients=true');
+
+        $response->assertStatus(200);
+        $arr = $response->json();
+
+        $this->assertEquals($invoice_count + 1, count($arr['data']));
+
+
+    }
+
     public function testPaymentMethodsWithCreditsEnforced()
     {
         
@@ -51,6 +169,6 @@ class ClientModelTest extends TestCase
 
         $this->assertGreaterThan(0, CompanyGateway::count());
 
-        $this->assertEquals(1, count($payment_methods));
+        $this->assertEquals(2, count($payment_methods));
     }
 }