I think 20% is a good general-case job-hopping goal number. You'd expect a 5% raise in a good company every year, maybe 10% on a promotion. You want more than t

I think 20% is a good general-case job-hopping goal number. You'd expect a 5% raise in a good company every year, maybe 10% on a promotion. You want more than that to change domains/workplaces. Plus you want to cover the small chance that the new place will end up having a bad work environment, commute, culture, etc, so you aim higher. But if you were lowballed at your current job, aim for the top of the range! Look up your position on glassdoor.com and see what you're really worth. Information is ammunition!