Using Reduced VAT Rate in SAS
The reduced VAT rate applies to a select group of goods and services in the UK; it covers items such as sanitary products, energy-saving measures, and children's car seats.
A full list of which rates of VAT apply and which items are exempt or outside the scope of VAT can be found here for the UK: https://www.gov.uk/guidance/rates-of-vat-on-different-goods-and-services
To switch between the standard rate and reduced rate of VAT, you can click the VAT Rate slide in the VAT Settings panel.
You cannot change the VAT on fees to a reduced rate as the rate you are paying is Amazon's rate, not your own rate.