TransferWise serves over 300 transfer routes. You can learn more about the countries TransferWise supports here.
It depends on the country you're sending money to. In the Eurozone, you'll always need an IBAN and a SWIFT / BIC code. Banks in the USA use SWIFT codes, but they don't use IBANs. It's the same in New Zealand too. Learn more about IBAN numbers here.
As of today, 35 countries in the extended Eurozone are within the SEPA (Single Euro Payments Area) - including the United Kingdom, Switzerland and Germany. Learn more about which countries are in SEPA here.
TransferWise has not carried out any enquiries on the legal standing of any of the banks and financial institutions listed.
TransferWise does not take responsibility or have any liability to you or anyone for any risks that may be associated with these banks or financial institutions or the jurisdictions they operate in, nor any transactions that you or any other person may undertake with these organisations. TransferWise may not provide services in the jurisdiction in question. For a list of our supported countries, please see here.