The punitive price
premium charged on some products by Tesco supermarkets for customers without a loyalty card. Tesco is the UK's largest grocery
chain with
28% market share.
"I paid £1
extra in Tesco tax on the ice
cream because I didn't have my clubcard."
"You can opt out of tracking cookies for free online, but the Tesco tax means you need to be rich to do so offline as
well."
"I went to Sainsbury's instead to avoid the Tesco tax."