diff --git a/app/Models/Credit.php b/app/Models/Credit.php
index 5dd699799426..e4dfe6e5f79b 100644
--- a/app/Models/Credit.php
+++ b/app/Models/Credit.php
@@ -450,9 +450,9 @@ class Credit extends BaseModel
     /**
      * Access the invoice calculator object.
      *
-     * @return \stdClass The invoice calculator object getters
+     * @return InvoiceSumInclusive | InvoiceSum The invoice calculator object getters
      */
-    public function calc()
+    public function calc(): InvoiceSumInclusive | InvoiceSum
     {
         $credit_calc = null;
 
diff --git a/app/Models/Invoice.php b/app/Models/Invoice.php
index 9af728560543..34e7fe888ebf 100644
--- a/app/Models/Invoice.php
+++ b/app/Models/Invoice.php
@@ -666,7 +666,7 @@ class Invoice extends BaseModel
      *
      * @return InvoiceSumInclusive | InvoiceSum The invoice calculator object getters
      */
-    public function calc()
+    public function calc(): InvoiceSumInclusive | InvoiceSum
     {
         $invoice_calc = null;
 
diff --git a/app/Models/PurchaseOrder.php b/app/Models/PurchaseOrder.php
index 11c5b1bce146..01ad73b4c3b7 100644
--- a/app/Models/PurchaseOrder.php
+++ b/app/Models/PurchaseOrder.php
@@ -353,19 +353,14 @@ class PurchaseOrder extends BaseModel
         switch ($status) {
             case self::STATUS_DRAFT:
                 return '<h5><span class="badge badge-light">'.ctrans('texts.draft').'</span></h5>';
-                break;
             case self::STATUS_SENT:
                 return '<h5><span class="badge badge-primary">'.ctrans('texts.sent').'</span></h5>';
-                break;
             case self::STATUS_ACCEPTED:
                 return '<h5><span class="badge badge-primary">'.ctrans('texts.accepted').'</span></h5>';
-                break;
             case self::STATUS_CANCELLED:
                 return '<h5><span class="badge badge-secondary">'.ctrans('texts.cancelled').'</span></h5>';
-                break;
             default:
-                // code...
-                break;
+                return '<h5><span class="badge badge-primary">'.ctrans('texts.sent').'</span></h5>';
         }
     }
 
@@ -491,7 +486,12 @@ class PurchaseOrder extends BaseModel
         return $this->morphMany(Document::class, 'documentable');
     }
 
-    public function calc()
+    /**
+     * Access the invoice calculator object.
+     *
+     * @return InvoiceSumInclusive | InvoiceSum The invoice calculator object getters
+     */
+    public function calc(): InvoiceSumInclusive | InvoiceSum
     {
         $purchase_order_calc = null;
 
diff --git a/app/Models/Quote.php b/app/Models/Quote.php
index 4cb81f8b7e41..89e4462de56c 100644
--- a/app/Models/Quote.php
+++ b/app/Models/Quote.php
@@ -393,9 +393,9 @@ class Quote extends BaseModel
     /**
      * Access the quote calculator object.
      *
-     * @return \stdClass The quote calculator object getters
+     * @return InvoiceSumInclusive | InvoiceSum The quote calculator object getters
      */
-    public function calc()
+    public function calc(): InvoiceSumInclusive | InvoiceSum
     {
         $quote_calc = null;
 
diff --git a/app/Models/RecurringInvoice.php b/app/Models/RecurringInvoice.php
index 0067e1d09c66..5fef18662143 100644
--- a/app/Models/RecurringInvoice.php
+++ b/app/Models/RecurringInvoice.php
@@ -697,7 +697,12 @@ class RecurringInvoice extends BaseModel
         }
     }
 
-    public function calc()
+    /**
+     * Access the invoice calculator object.
+     *
+     * @return InvoiceSumInclusive | InvoiceSum The invoice calculator object getters
+     */
+    public function calc(): InvoiceSumInclusive | InvoiceSum
     {
         $invoice_calc = null;
 
diff --git a/app/Models/RecurringQuote.php b/app/Models/RecurringQuote.php
index 3df3e46d1b86..2ed560f2026e 100644
--- a/app/Models/RecurringQuote.php
+++ b/app/Models/RecurringQuote.php
@@ -604,7 +604,12 @@ class RecurringQuote extends BaseModel
         }
     }
 
-    public function calc()
+    /**
+     * Access the invoice calculator object.
+     *
+     * @return InvoiceSumInclusive | InvoiceSum The invoice calculator object getters
+     */
+    public function calc(): InvoiceSumInclusive | InvoiceSum
     {
         $invoice_calc = null;