Giving them a range might not be the best idea, but if they are really pushing you for your salary, it's a good idea to just look up market value for your posit

Giving them a range might not be the best idea, but if they are really pushing you for your salary, it's a good idea to just look up market value for your position and give them some sense of what you want. Another approach would be to ask HR for what their range is, and you can confirm that it is within your expectations. Mind you, this is not the final negotiation, just a ballpark of where they can make you an offer. You should still be able to negotiate to the upper limit of the range once you're given an offer. A range gives you some flexibility, whereas giving them your current salary, or just as single value, immediately anchors you to it.