Prevent Sales Tax For Tickets under a certain Event or Post ID

tribe-no-sales-tax.php

/**
 * Prevent Sales Tax For Tickets under a certain Event or Post ID
 */
add_filter( 'tribe_tickets_commerce_paypal_add_to_cart_args', 'tribe_add_tax_rate_to_paypal_transaction', 10, 3 );
function tribe_add_tax_rate_to_paypal_transaction( $args, $php_post, $post ) {
	
	// change 15713 to the event or post id with the tickets that should not collect sales tax
	if ( $post->ID === 15713 ) {
		$args['tax_rate'] = '00.00';
	}

	return $args;
}