Invoices cannot be deducted from personal income tax. It's just that some private enterprises operate irregularly and ask you to take invoices to deduct taxes. He gives you the invoice amount, and the company bears the expenses. At this point, his income and expenditure are even.

The general taxpayer's input invoice can be deducted from the value-added tax and income tax, but if the money is used as your personal wage income, you have to pay a tax, and the company has to bear the corresponding social insurance, so the invoice is deductible.