Legal analysis: tax refund is to return the tax amount that has not been deducted at the end of VAT to the taxpayer. The value-added tax adopts the chain deduction mechanism, and the tax payable is the balance of the taxpayer's current output tax after deducting the input tax. Among them, the output tax refers to the value-added tax calculated according to the sales volume and the applicable tax rate; Input tax refers to the value-added tax paid for purchasing raw materials. When the input tax amount is greater than the output tax amount, the input tax amount that is not deducted will form a tax deduction. The tax exemption is mainly caused by the inconsistency between the taxpayer's input tax and the output tax, such as the centralized procurement of raw materials and inventory, which have not yet been fully sold; No income during the investment period, etc. In addition, in the case of multiple tax rates, the applicable tax rate for sales is lower than the applicable tax rate for input, which will also form a tax credit. There are generally two ways to deal with tax allowance internationally: allowing taxpayers to carry forward the next period to continue to deduct or apply for tax refund in the current period. At the same time, countries or regions that allow tax refund will also set stricter tax refund conditions accordingly, such as the tax allowance must reach a certain amount; You can only apply for a tax refund once a year or a period of time; Only certain industries are allowed to apply for tax refund.

Legal basis: Article 14 of the Individual Income Tax Law of People's Republic of China (PRC), the tax withheld by withholding agents every month or every time shall be turned over to the state treasury within 15 days of the following month, and a declaration form for withholding individual income tax shall be submitted to the tax authorities. Where a taxpayer or withholding agent handles the tax refund for the taxpayer, the tax authorities shall, after examination, handle the tax refund in accordance with the relevant provisions on treasury management.