I want to add my Monzo card on my wallet

Monzo Card uses Sutton Bank in US.

> Sutton Bank

While Monzo runs a regulated bank in the UK, we've partnered with Sutton Bank, based in Ohio, to provide our US accounts. Sutton holds our users' deposits and protects your money with Federal Deposit Insurance Corporation (FDIC) insurance.Feb 6, 2023 <

Sutton Bank is listed in Apples support article for banks supporting Apple Pay.

Apple Pay participating banks in Canada, Latin America, and the United States - Apple Support

Please contact Monzo Card support team with questions why your account/card can’t be added to Apple Pay.