Government departments or public institutions usually use special merchant codes so that banks or credit card companies can distinguish them from other merchants. National financial expenditure generally refers to the government's public utilities expenditure, such as taxation, social security, education, medical care, public transportation, etc. Therefore, if you see the words "national financial expenditure" on your credit card, it means that you have spent money on the above-mentioned businesses.
It should be noted that if you have any questions about the credit card consumption records, you can contact the customer service center of the credit card company for inquiry and verification.