What I personally do is two things. Before I've even had an interview, I have an acceptable salary range in mind. I usually ask for the top end of that range a

What I personally do is two things. Before I've even had an interview, I have an acceptable salary range in mind. I usually ask for the top end of that range and have room to negotiate down, so when I'm asked that question, I have an answer at the ready. The other is that I never reveal my past salary. Revealing it is a trap in so many different ways, and it's none of their business.