GUIDE深度 · Deep dive
How Credit Card Interest Works
Credit card interest usually accrues daily and posts monthly; minimum payments send most of the money to interest. The grace period only applies if you pay the full statement balance each month.
Key numbers
APR is annual; daily interest is roughly APR divided by 365.
Minimum payments are often 1 to 3 percent of the balance or a flat amount.
Reduce interest
Pay in full to avoid revolving interest.
Consider a 0 percent balance transfer or lower-rate loan, but watch fees and deadlines.
FAQ
What happens with minimum payments?
The payoff stretches out and total interest rises sharply.
Is a 0 percent transfer free?
Often 3 to 5 percent fee, and the rate jumps after the promo.