I'm a recruiter, and I always ask this question -and it's completely valid. If I am going to make an offer, I need to come up with something that would be attractive to you. I can't do that unless I know your current package and what your expectations are.My advice is do NOT lie. We take references, you know. I've withdrawn offers from candidates for this kind of thing. Be honest. if you think you are currently underpaid, try and explain why. Also, be realistic in terms of what you are pitching for. If you are currently earning 40k, have two years experience and then tell me that you would like around 65k, I'm not going to be too impressed.