Monzo
The Contactless Round-Up Ceiling: Why £50 Dining Taps Barely Move Chase, Monzo and Moneybox Savings (and the Monzo Round Up Multiplier Fix)
Round-ups cap at 99p per tap and a £50.00 bill saves nothing on Chase, Monzo or Moneybox. The Monzo 10x multiplier rescues odd-pence spend, but only a per-merchant fixed rule like Plum's Naughty Rule catches whole-pound dining bills.