The currency in Iceland is called krona (crown), or ISK and all banks change foreign currencies. The use of credit and debit card is also common and almost everywhere they can be used even for the lowest amount. Cash can also be obtained with credit cards at banks and ATMs.
We recommend bringing £75-125 worth of currency.
To consider would be:
- A tip for the guides and porters during the trek between £25-60 worth of krona each
- Cash for souvenirs
- Emergency cash
- Money for group dinner and drinks on the last night
- Money for any meals not included in the itinerary and for coffee / snacks you may want on free days
- Krona / GBP to buy food during the airport journeys there and back
If you want to bring a card, you could also bring your Monzo or Revolut card as extra cash. ATMs are available in areas like Reykjavik.