app/code/community/Adyen/Fee/Block/Adminhtml/Sales/Order/Invoice/Totals.php
protected function addPaymentFeeWithTax($addTaxIndicationLabel = false)
    {
        if ($addTaxIndicationLabel) {
            $label = $this->helper('adyen')->__('Payment Fee (Incl.Tax)');
        } else {
            $label = $this->helper('adyen')->__('Payment Fee');
        }

        if ($this->getSource()->getPaymentFeeAmount() != 0) {
            $this->addTotal(
                new Varien_Object(
                    array(
                        'code' => 'payment_fee_incl',
                        'strong' => false,
                        'value' => $this->getSource()->getPaymentFeeAmount() + $this->getSource()->getPaymentFeeTax(),
                        'base_value' => $this->getSource()->getBasePaymentFeeAmount() + $this->getSource()->getPaymentFeeTax(),
                        'label' => $label,
                        'area' => '',
                    )
                ),
                'subtotal'
            );
        }
    }
protected function addPaymentFeeWithTax($addTaxIndicationLabel = false)
    {
        if ($addTaxIndicationLabel) {
            $label = $this->helper('adyen')->__('Payment Fee (Incl.Tax)');
        } else {
            $label = $this->helper('adyen')->__('Payment Fee');
        }

        if ($this->getSource()->getPaymentFeeAmount() != 0) {
            $this->addTotal(
                new Varien_Object(
                    array(
                        'code' => 'payment_fee_incl',
                        'strong' => false,
                        'value' => $this->getSource()->getPaymentFeeAmount() + $this->getSource()->getPaymentFeeTax(),
                        'base_value' => $this->getSource()->getBasePaymentFeeAmount() + $this->getSource()->getPaymentFeeTax(),
                        'label' => $label,
                        'area' => '',
                    )
                ),
                'subtotal'
            );
        }
    }
protected function addPaymentFeeWithTax ( $ addTaxIndicationLabel = false ) { if ( $ addTaxIndicationLabel ) { $ label = $ this -> helper ( 'adyen' ) -> __ ( 'Payment Fee (Incl.Tax)' ) ; } else { $ label = $ this -> helper ( 'adyen' ) -> __ ( 'Payment Fee' ) ; } if ( $ this -> getSource ( ) -> getPaymentFeeAmount ( ) != 0 ) { $ this -> addTotal ( new Varien_Object ( array ( 'code' => 'payment_fee_incl' , 'strong' => false , 'value' => $ this -> getSource ( ) -> getPaymentFeeAmount ( ) + $ this -> getSource ( ) -> getPaymentFeeTax ( ) , 'base_value' => $ this -> getSource ( ) -> getBasePaymentFeeAmount ( ) + $ this -> getSource ( ) -> getPaymentFeeTax ( ) , 'label' => $ label , 'area' => '' , ) ) , 'subtotal' ) ; } }
Add PaymentFee with Tax to totals array

@param bool|false $addTaxIndicationLabel
Add PaymentFee with Tax to totals array