Tax-free invoices can be deducted from the input, and tax-free invoices are generally used for catering services engaged by laid-off, disabled and unemployed people. Tax exemption refers to the encouragement or special care given by the state to some taxpayers or taxpayers in order to realize certain political and economic policies. Tax reduction is to reduce part of the tax payable, and tax exemption is to exempt all taxes.

Legal analysis

If the flow rate is far below the minimum flow rate to ensure accuracy, there will be no output (such as vortex flowmeter) or the output signal will be cut off as a small signal (such as differential pressure flowmeter), which is unfavorable and unfair to suppliers. In order to prevent the loss of benefits, for a specific set of thermal energy metering equipment, the supply and demand sides often agree that a certain flow value is the "agreed lower limit flow" according to the flow measurement range and the achievable range, and agree that if the actual flow is less than the agreed value, it will be charged according to the lower limit flow. The metrological administrative department of the people's government at or above the county level may set up metrological verification institutions according to needs, or authorize metrological verification institutions of other units to perform compulsory verification and other verification and testing tasks. Personnel who perform the verification and testing tasks specified in the preceding paragraph must pass the examination. This function is usually realized in the flow display instrument. The metrological administrative department of the local people's government at or above the county level shall, according to the needs of the local area, establish public standard instruments of measurement, which shall be used after passing the examination presided over by the metrological administrative department of the people's government at a higher level. Enterprises and institutions may, as required, establish standards of measurement for their own use, and the highest standards of measurement shall be used after passing the examination presided over by the metrological administrative department of the relevant people's government. Metrological verification shall be carried out on site in accordance with the principle of economy and rationality. Metrological verification must be carried out in accordance with the national metrological verification system table. The national metrological verification system table shall be formulated by the metrological administrative department of the State Council.

legal ground

Article 16 of the Measures for the Administration of Invoices in People's Republic of China (PRC) _ Units and individuals applying for receiving and purchasing invoices apply for obtaining and purchasing tickets, provide the identity certificate of the agent, tax registration certificate or other relevant certificates, and the impression of the financial seal or special seal for invoices, and issue an invoice receiving and purchasing book after being audited by the competent tax authorities. Units and individuals receiving and purchasing invoices shall receive and purchase invoices from the competent tax authorities in accordance with the types, quantities and ways of purchasing tickets approved in the invoice receiving and purchasing book.