Tax planning for businesses under the new tax system involves strategies for the three main commodity turnover taxes. By choosing different sales methods, payment tools, and supply sources, added-value tax can be optimized. Consumption tax can be managed by creating separate sales departments, using price tipping points, and avoiding high taxation. Business tax can be reduced by separating turnover, creating proper contracts, and establishing separate businesses. Businesses should use tax regulations wisely to lower costs and improve overall tax management.