How does the customs deduct tax? I brought something back from abroad myself. Will the customs check when I come back? If I find out, how can I deduct the tax?

Passengers entering and leaving the country for their own use shall be limited to their own use and reasonable quantity.

2. "Personal articles" refer to articles (except tobacco and alcohol) and motor vehicles that are necessary for the daily life of non-resident long-term passengers during their stay in China, as listed in the Classification Table of Inbound and Outbound Luggage of People's Republic of China (PRC) and the Classification Table of Inbound and Outbound Luggage of China Customs.

3. Entry resident passengers carry articles for their own use obtained abroad, with a total value of less than 5,000 yuan (including 5,000 yuan); If a non-resident passenger intends to stay in China with articles for personal use with a total value of less than 2,000 yuan (including 2,000 yuan), the customs will release them duty-free, and a single variety is limited to personal use and a reasonable quantity, but tobacco products, alcoholic products and 20 kinds of commodities that should be taxed according to state regulations will be handled separately.

4. Entry resident passengers carry articles for personal use exceeding RMB 5,000, which are verified by the customs as personal use; If the inbound non-resident passengers carry articles intended to stay in China for their own use, and the amount exceeds RMB 2,000, the customs will only levy taxes on the articles for their own use that exceed the amount, and the undivided articles will be fully taxed.

5. Dutiable commodities: TV washing machines (dryers), refrigerators (cabinets), air conditioners, video recorders (players), stereos, desktop computers, telephones, pagers, fax machines, typewriters, electronic calculators, tape recorders, furniture, lamps, food (including tobacco and alcohol) and padded bedding. Duty-free items include household video cameras, cameras, portable tape recorders, portable CD players and portable computers, and are limited to a reasonable amount for personal use.

6. Restricted goods:

Radio transceiver, communication security machine.

Tobacco, wine.

Endangered and precious animals and plants (including specimens) and their seeds and propagation materials.

International currency.

7. Goods prohibited from entering the country:

All kinds of weapons, simulation weapons, ammunition, explosives.

Forged currency and securities.

Printed matter harmful to China's politics, economy, culture and morality. Film, photos, photographs, audio tapes, video tapes, laser discs, computer storage media and other products.

All kinds of potent poisons, opium, morphine, heroin, marijuana and other addictive narcotics and psychotropic substances.

Fresh fruits, solanaceae vegetables

Except living animals (dogs and cats), animal products, animal pathogens and pests, other pests, animal carcasses, soil, genetically modified organisms, related animals and plants and their products in countries and regions where animal and plant epidemics are prevalent, and other items that need to be inspected.

Foods, medicines and other articles that are harmful to human and animal health, come from epidemic areas and can spread diseases.

Tax deduction is calculated according to commodity tax rate and commodity value. So it's best to keep the invoice.