Most credit scores range between 300 and 850, and a balance - transfer credit card may end up decreasing your score by just 30 to 40 points. (valuepenguin.com)
This may temporarily decrease your score a few points, but won't have a lasting effect on your report. (creditabsolute.com)
Your credit score can take a hit every time you apply for credit, and having a large number of new credit accounts can also decrease your score. (firstib.com)