ALTER TABLE `tblexpenses` ADD `tax_one_amount` DECIMAL(15,2) NULL DEFAULT NULL AFTER `tax2`, ADD `tax_two_amount` DECIMAL(15,2) NULL DEFAULT NULL AFTER `tax_one_amount`, ADD `is_tax_included` TINYINT(4) NOT NULL DEFAULT '1' AFTER `tax_two_amount`, ADD `total_amount` DECIMAL(15,2) NULL DEFAULT NULL AFTER `is_tax_included`;