The interest on the credit card is calculated according to the compound interest of w5 for one day. The so-called compound interest means, for example, taking 10000*0.05% on the first day, making it 10005 * 0.05% on the second day, making it10.05%.

Second, the credit card interest is not calculated from the billing date, but from the time you spend. All the calculated interest for 40 to 50 days is normal.

Our company is specialized in helping customers return credit cards, so I am still quite clear about this one. I hope my answer is helpful to you. Thank you.