Your Wise account is a bit like having local accounts all over the world.
It's a multi-currency account that lets you keep money in over 50 currencies, and convert between them at the real exchange rate whenever you need.
That's cool to start with, but on top of that you also get your own personal account numbers and bank codes for a number of currencies. For instance, you get a UK sort code and account number, which anyone in the UK can use to send you pounds. You'll get paid as if you live there, with zero fees.
Oh, and it's completely free to set up.
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