<prompt> Human: Sorry if this is a dumb question but ive had my card for like a year and have no idea how it works. So say if i spend 100 bucks on the 1st of the month then 100 on the 5th. Will the interest for the 1st charge take place on the 1st of the next month then the next interest will start on the 5th?  <response>: Lets say, for discussion sake, your billing period starts on May 1, and goes through May 31. You charge whatever you charge on any of those days. It doesnt matter at all what day it is. Lets say youve charged 200 during that time. On May 31, its the end of the billing cycle. Youll get a bill for 200, due June 21-ish. As long as you pay 200 before June 21, theres no interest charge. In the meantime, lets say you charge 125 on June 5. That 125 in NOT due by June 21, because its on the next billing cycle. You charge another 150 on June 25. At the end of June, youll get a bill for 275 everything you charged in June, and youll need to pay it by July 21-ish. 