Set Default Tax Class to ‘Zero rate’ on WC Vendors Pro Add Product Form

/**

 * Set Default Tax Class to 'Zero rate' on WC Vendors Pro Add Product Form

 */

add_filter( 'wcv_product_tax_class', 'custom_wcv_default_product_tax_class', 10, 1 );

function custom_wcv_default_product_tax_class( $args ) {

	// Check if editing a product (post ID exists) or creating a new one

	$product_id = get_the_ID();

	// If $args is an array (Pro Form Builder definition)

	if ( is_array( $args ) ) {

		if ( ! $product_id || get_post_type( $product_id ) !== 'product' ) {

			$args['value'] = 'zero-rate'; // Set default slug for new products

		}

		return $args;

	}

	// Fallback for non-array string values when creating a new product

	if ( empty( $args ) && ! $product_id ) {

		return 'zero-rate';

	}

	return $args;

}

/**

 * Set Default Tax Status on WC Vendors Pro Add Product Form (Optional)

 */

add_filter( 'wcv_product_tax_status', 'custom_wcv_default_product_tax_status', 10, 1 );

function custom_wcv_default_product_tax_status( $args ) {

	$product_id = get_the_ID();

	if ( is_array( $args ) ) {

		if ( ! $product_id || get_post_type( $product_id ) !== 'product' ) {

			$args['value'] = 'none'; // Set 'none' or 'taxable'

		}

		return $args;

	}

	if ( empty( $args ) && ! $product_id ) {

		return 'none';

	}

	return $args;

}