<prompt> Human: So I am getting ready to buy my first house. I was reviewing the loan docs and it showed my Experian score as 707. I have been monitoring my credit with Credit Karma thanks to you fine folks and it was showing 736. I know Crédit Karma is not an exact score but almost 30 points seemed a bit off. My Discover card gives me a score every month and in January it showed 735. I went the the 3 credit bureaus and they gave me scores of 734, 734, and 733. My wife did everything as well and her loan doc score was 704 while everything else was showing 718-722.I guess my question would be is there something different about the score that mortgage company gets compared to the one I get? Is there likely an input error causing the difference? Is my mortgage guy trying to pull a fast one on me? Its my first time going through this whole process and while I thought I had studied up well, there are new things around every corner I wasnt expecting and it can be very overwhelming. Mostly I want to make sure Im not missing something simple before I go and make a stink about it.  <response>: There are hundreds of different credit scores: If you want to boost your scores the quickest and simplest way would be to pay down your credit cards so one reports a 5 balance and the rest 0: 