diff --git a/app/Models/Invoice.php b/app/Models/Invoice.php
index a8cdd5f5753e..5f7c065b70de 100644
--- a/app/Models/Invoice.php
+++ b/app/Models/Invoice.php
@@ -1265,7 +1265,7 @@ class Invoice extends EntityModel implements BalanceAffecting
         }
 
         foreach ($this->invoice_items as $invoiceItem) {
-            $itemTaxAmount = $this->getItemTaxable($invoiceItem, $taxable);
+            $taxable = $this->getItemTaxable($invoiceItem, $taxable);
 
             if ($invoiceItem->tax_name1) {
                 $itemTaxAmount = round($taxable * ($invoiceItem->tax_rate1 / 100), 2);