More Product Model optimisation

app/Models/Account.php

@@ -193,4 +193,15 @@ class Account extends Model implements IDs
 			return $item->active AND $item->due > 0;
 		});
 	}
+
+	/**
+	 * Return the taxed value of a value
+	 *
+	 * @param float $value
+	 * @return float
+	 */
+	public function taxed(float $value): float
+	{
+		return Tax::calc($value,$this->taxes);
+	}
 }