Can't increase, don't need it. According to the inquiry of Hualv. com, the advertising industry cannot increase the tax rate, and the tax rate is determined by the state. It is not necessary to go to the tax bureau for confirmation to issue an invoice of 13 to taxpayers, and 13 itself belongs to the tax rate stipulated in the VAT regulations. Article 2 of the revised Provisional Regulations of the People's Republic of China on Value-added Tax; (1) Taxpayers selling or importing goods, except as provided in Items (2) and (3) of this Article, shall pay a tax rate of 17%.