There are a lot of special achievements in "Freeze Age 2", and the Chancellor of Finance is one of them. To achieve this achievement, you only need to have an income of 50 calorie coupons per week. Calorie coupons are Universal currency is needed in many places and is acquired passively during development.
How to get the Chancellor of the Finance achievement in Frostpunk 2
Chancellor of the Exchequer
Earn at least 50 calorie coupons every week
Location: Story or Utopia Builder
Calorie coupons are a universal currency that is passively earned based on population and certain policies and laws you pass.
As the game progresses, you will get more, which may happen in Chapter 5 or even Chapter 4.
Chancellor of the Exchequer
Have at least 50 income of heatstamps
Location: Story or Utopia Builder
Heatstamps are a universal currency which is gained passively based on population and certain policies and laws you pass, etc.
Further into playthrough you are you'll obtain more, it will likely happen in Chapter 5, or maybe even Chapter 4.