HiPlease, please, please get some proper tax advice!!! You should be able to net £1-2k per month more than that, assuming that you are the right side of IR35.The other factors to bear in mind, though, are bonus (which could be substantial at this level, especially if you sell on more work), pension, holiday and sick pay, plus training courses. It is not easy staying current as a contractor, although it sounds as though you pride yourself on being in a position of thought leadership. It's a tough call...