diff --git a/app/Models/PurchaseOrder.php b/app/Models/PurchaseOrder.php
new file mode 100644
index 000000000000..4d73c609559d
--- /dev/null
+++ b/app/Models/PurchaseOrder.php
@@ -0,0 +1,169 @@
+<?php
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2022. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://www.elastic.co/licensing/elastic-license
+ */
+
+namespace App\Models;
+
+
+use App\Services\PurchaseOrder\PurchaseOrderService;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class PurchaseOrder extends BaseModel
+{
+    use Filterable;
+    use SoftDeletes;
+
+    protected $fillable = [
+        'number',
+        'discount',
+        'company_id',
+        'status_id',
+        'user_id',
+        'last_sent_date',
+        'is_deleted',
+        'po_number',
+        'date',
+        'due_date',
+        'terms',
+        'public_notes',
+        'private_notes',
+        'tax_name1',
+        'tax_rate1',
+        'tax_name2',
+        'tax_rate2',
+        'tax_name3',
+        'tax_rate3',
+        'total_taxes',
+        'uses_inclusive_taxes',
+        'is_amount_discount',
+        'partial',
+        'recurring_id',
+        'next_send_date',
+        'reminder1_sent',
+        'reminder2_sent',
+        'reminder3_sent',
+        'reminder_last_sent',
+        'partial_due_date',
+        'project_id',
+        'custom_value1',
+        'custom_value2',
+        'custom_value3',
+        'custom_value4',
+        'backup',
+        'footer',
+        'line_items',
+        'client_id',
+        'custom_surcharge1',
+        'custom_surcharge2',
+        'custom_surcharge3',
+        'custom_surcharge4',
+//        'custom_surcharge_tax1',
+//        'custom_surcharge_tax2',
+//        'custom_surcharge_tax3',
+//        'custom_surcharge_tax4',
+        'design_id',
+        'invoice_id',
+        'assigned_user_id',
+        'exchange_rate',
+        'balance',
+        'partial',
+        'paid_to_date',
+        'subscription_id',
+        'vendor_id',
+        'last_viewed'
+    ];
+
+    protected $casts = [
+        'line_items' => 'object',
+        'backup' => 'object',
+        'updated_at' => 'timestamp',
+        'created_at' => 'timestamp',
+        'deleted_at' => 'timestamp',
+        'is_amount_discount' => 'bool',
+
+    ];
+
+    const STATUS_DRAFT = 1;
+    const STATUS_SENT = 2;
+    const STATUS_PARTIAL = 3;
+    const STATUS_APPLIED = 4;
+
+    public function assigned_user()
+    {
+        return $this->belongsTo(User::class, 'assigned_user_id', 'id')->withTrashed();
+    }
+
+    public function vendor()
+    {
+        return $this->belongsTo(Vendor::class);
+    }
+
+    public function history()
+    {
+        return $this->hasManyThrough(Backup::class, Activity::class);
+    }
+
+    public function activities()
+    {
+        return $this->hasMany(Activity::class)->orderBy('id', 'DESC')->take(50);
+    }
+
+    public function company()
+    {
+        return $this->belongsTo(Company::class);
+    }
+
+    public function user()
+    {
+        return $this->belongsTo(User::class)->withTrashed();
+    }
+
+    public function client()
+    {
+        return $this->belongsTo(Client::class)->withTrashed();
+    }
+
+
+    public function invitations()
+    {
+        return $this->hasMany(CreditInvitation::class);
+    }
+
+    public function project()
+    {
+        return $this->belongsTo(Project::class)->withTrashed();
+    }
+
+    public function invoice()
+    {
+        return $this->belongsTo(Invoice::class);
+    }
+
+    public function service()
+    {
+        return new  PurchaseOrderService($this);
+    }
+
+    public function invoices()
+    {
+        return $this->belongsToMany(Invoice::class)->using(Paymentable::class);
+    }
+
+    public function payments()
+    {
+        return $this->morphToMany(Payment::class, 'paymentable');
+    }
+
+    public function documents()
+    {
+        return $this->morphMany(Document::class, 'documentable');
+    }
+
+}