There are no costs to open an account with Broad. Also, there are no maintenance fees.
To add funds to the Broad account from a Brazilian account, there is the IOF tax of 1.1% and an exchange mark-up of 2% on top of the commercial rate of the selected currency.
The IOF ("Imposto sobre Operações Financeiras", or Tax on Financial Operations) is a Brazilian federal tax that has different rates depending on the operation performed, such as insurance and loans. In the case of Brazilian-issued cards, there is an IOF tax of 6.38% on the amount spent overseas. On the other hand, on your remittance from Brazil to Europe, the IOF tax is of 1.1%.
With Broad, you can use your money in a smarter way.