Add Tax Exempt form on checkout in woocommerce

Question

I am trying to add a form to my checkout page so when a user clicks the \'Tax Exempt\' checkbox, a textbox will popup and ask the user what the Tax Exempt Id number is.

Answer 1

The accepted solution didn't work for me, but I modified it to use the following:

//=============================================================================
// ADD TAX EXEMPT CHECKMARK
// =============================================================================
add_action( 'woocommerce_after_order_notes', 'qd_tax_exempt');

function qd_tax_exempt( $checkout ) {

  echo '
'.__('Tax Exempt').'
';

  woocommerce_form_field( 'shipping_method_tax_exempt', array(
      'type'          => 'checkbox',
      'class'         => array(),
      'label'         => __('My organization is tax exempt.'),
      'required'  => false,
      ), $checkout->get_value( 'shipping_method_tax_exempt' ));

  echo '
';
}

add_action( 'woocommerce_checkout_update_order_review', 'taxexempt_checkout_update_order_review');
function taxexempt_checkout_update_order_review( $post_data ) {
  global $woocommerce;

  $woocommerce->customer->set_is_vat_exempt(FALSE);

  parse_str($post_data);

  if ( isset($shipping_method_tax_exempt) && $shipping_method_tax_exempt == '1')
    $woocommerce->customer->set_is_vat_exempt(true);                
}

The key here is understanding that any field with a name that starts with shipping_method is going to inherit this updating order functionality (which was the part that didn't work for me). I found this answer at http://www.affectivia.com/blog/have-a-checkbox-on-the-checkout-page-which-updates-the-order-totals/