I had success with the following technique: Printed a spreadsheet with how much I was earning annually, bonuses, performance, estimated salary adjustment in 6

I had success with the following technique: Printed a spreadsheet with how much I was earning annually, bonuses, performance, estimated salary adjustment in 6 months, 12 months etc. Put this physical paper on the table and said: "I want to earn 30% more than this". Two hours later, got an offer with such number.