woocommerce/templates/myaccount/form-add-payment-method.php

<?php
/**
 * Add payment method form form
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/myaccount/form-add-payment-method.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see 	    http://docs.woothemes.com/document/template-structure/
 * @author 		WooThemes
 * @package 	WooCommerce/Templates
 * @version     2.1
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

?>
<form id="add_payment_method" method="post">
	<div id="payment">
		<?php if ( $available_gateways = WC()->payment_gateways->get_available_payment_gateways() ) : ?>
			<ul class="payment_methods methods"><?php
				// Chosen Method
				if ( sizeof( $available_gateways ) ) {
					current( $available_gateways )->set_current();
				}

				foreach ( $available_gateways as $gateway ) {
					?>
					<li class="payment_method_<?php echo $gateway->id; ?>">
						<input id="payment_method_<?php echo $gateway->id; ?>" type="radio" class="input-radio" name="payment_method" value="<?php echo esc_attr( $gateway->id ); ?>" <?php checked( $gateway->chosen, true ); ?> />
						<label for="payment_method_<?php echo $gateway->id; ?>"><?php echo $gateway->get_title(); ?> <?php echo $gateway->get_icon(); ?></label>
						<?php
							if ( $gateway->has_fields() || $gateway->get_description() ) {
								echo '<div class="payment_box payment_method_' . $gateway->id . '" style="display:none;">';
								$gateway->payment_fields();
								echo '</div>';
							}
						?>
					</li>
					<?php
				}
			?></ul>
			<div class="form-row">
				<?php wp_nonce_field( 'woocommerce-add-payment-method' ); ?>
				<input type="submit" class="button alt" id="place_order" value="<?php esc_attr_e( 'Add Payment Method', 'woocommerce' ); ?>" />
				<input type="hidden" name="woocommerce_add_payment_method" value="1" />
			</div>
		<?php else : ?>
			<p><?php _e( 'Sorry, it seems that there are no payment methods which support adding a new payment method. Please contact us if you require assistance or wish to make alternate arrangements.', 'woocommerce' ); ?></p>
		<?php endif; ?>
	</div>
</form>