And I might add that double the salary is a good reason to re-negotiate. You're not jumping for 5-10K, which may be reason not to negotiate ("Hey, he's jumping

And I might add that double the salary is a good reason to re-negotiate. You're not jumping for 5-10K, which may be reason not to negotiate ("Hey, he's jumping at the drop of a hat, if I keep him he'll jump at the next offer"), but when you're looking at a severe discrepancy in valuing an employee, it's worth the discussion. For most people a 2x salary is something you can't put down, even if you absolutely love your job. I think most people would understand and if you have a good transition plan you won't burn any bridges. The counter may or may not be the full 2x. They may counter lower and try to keep some fuzzy items like "You know what it's like here, you enjoy your job", etc. The counter may involve more responsibility. Why is company Y valuing you at double? Do they expect you to take on different responsibilities? That's definitely going to be a factor in the discussion.