Scores are tricky, but yes, your score should/will drop every time you open a new account. Because you've taken on a new credit account, you are more at risk. Your score should improve every six months of seasoning as long as you make your payments on time. Also, since you did just obtain a new mortgage, and assuming it's for a new house, did you use credit to furmish it? Another imprtant part of your score has to do with how much credit you have and how much you use- i.e., you have a $10K credit card, but only keep about a $2K balance on it. Those who max the card out and make their payments on time will not have as high a score as though who use it minimally. Statstically, those who max out credit cards and only make minimum monthly payments have a higher default rate than those who don't. Lastly, all the bureaus have several different ways of generating a credit score, called models. These models vary how they analyze one's credit history to come up with a rank/score, so you do have the possibility of seeing your TransUnion score with one bank at 700, while another may show it at 720. Hang in there, it will all come together. I would be more concerned about getting your mortgage servicer to report all your payments correctly to each of the bureaus than a number right now. The pendulum is almost done swinging to the crazy side of tight-wad, and you should see an improvement in your score in July/August once you've made your sixth payment and your servicer reports the info to the bureaus.