<prompt> Human: So I checked my Chase account and noticed Ive been given 1000 dollars extra on my credit card limit. I didnt ask for this. Can they do that? And Im flattered : that they gave me more credit.  <response>: Yes. It lowers your utilization ratio which may have a very slight upwards impact on your credit score. Doesnt hurt you one bit as long as you dont charge more than you can pay off. 