I'm resigning from my job today because, despite exceeding our sales quota for last year by 25%, senior management informed our team that no one would be receiving any increase in compensation, a bonus, or a promotion. Obviously this has had a negative affect on morale.
How much of that should I include in my resignation letter?
When it comes to the exit interview, DO NOT SAY ANYTHING EITHER. It all goes into your employment record. You don't owe them any honesty, so just leave quietly and don't burn any bridges.