[Liquid_Fire]

For me the killer feature is foreign currency transactions with no fees at the MasterCard exchange rate, both online and abroad. My "traditional" bank charges me a flat fee and a percentage for any transactions in other currencies.

[sambe]

I don't know what the MasterCard exchange rate is. However, someone recently told me regarding their credit card: "they give me the wholesale exchange rate, which is great". It turned out not to be so great (~1% wide market). It's good not to pay an additional fee/spread on top, but it can still be a poor deal overall.

[Jonnax]

This is their convertor below.

$10000 dollars cost £7,867.91

I googled $100 USD to GBP and it comes out as: £7,859.50

Percentage difference: 0.106947%

https://www.mastercard.co.uk/en-gb/consumers/get-support/con...

[sambe]

Google isn’t really an authority. The Google rate could be bad and MasterCard 0.1% worse. They could be from different times. Also, the MasterCard site says indicative only - if I convert the amount back again, MasterCard claims they are giving me free money.

GBPUSD spot is 0.002% wide (so you’d expect to pay ~0.001% for a single, instant transaction up to several million). It’s not actually too difficult to access this through a brokerage.

That said, if you could really get 0.1% from them it’d probably be considered good at retail.

[randomvectors]

Yep, that's a massive positive that I forgot to mention. In that space they're competing with Revolut rather than the traditional banks. Many people's setup will be traditional bank for everyday banking + Revolut for travel. Monzo can potentially replace both if it gains traction and people trust it enough.

[xioxox]

The Halifax Clarity card does this, and they have highstreet branches.

[grey-area]

they have highstreet branches

Is that a good thing?