My customers have to make a choice during the checkout to select if they are vat exempted or not. i use custom fields. I tried 3 solutions, all worked well:
Change items tax rate in WooCommerce checkout based on radio buttons
Add Tax Exempt form on checkout in woocommerce
and the best for me:
`
add_action( 'woocommerce_checkout_update_order_review', 'bbloomer_taxexempt_checkout_based_on_zip' );
function bbloomer_taxexempt_checkout_based_on_zip( $post_data ) {
WC()->customer->set_is_vat_exempt( false );
parse_str( $post_data, $output );
if ( $output['fsbdd_check_exotva'] === 'OUI' ) WC()->customer->set_is_vat_exempt( true );
}
`
But I can't change this setting in the woocommerce order admin page. if the customer was wrong or I need to edit the order manually I would like the VAT to change depending on this custom field.
I can manage the custom field with a metabox in the order backend (from metabox.io plugin). But there is no effect on the VAT. i would like the cart to be recalculate (recalculate button) once I have changed and saved the custom field value.
