Please could you help me understand the car benefit calculation?
Q. Throughout the tax year 2014–15, Rope plc provided Delilah with a petrol powered motor car which has a list price of £67,200, and an official CO2 emission rate of 207 grams per kilometre.
A. The relevant percentage for the car benefit is 34% (12% + 22% (205 – 95 = 110/5)).
I understand that up to 95g/km = 12% (given in the supplementary tax rates area). But I do not understand why 205 is used instead of 207 and why we divide the 110 by 5?
The tax percentage increases by 1% for every extra 5g/km over 95g/km. This is rounded down to the nearest percentage point. Therefore we use 205 instead of 207, and it’s divided by 5 to get the number of extra percentage points to add on.