Low cost USA - Europe funds transfer

[wallac3]

What do you consider are the cheapest (low commission) and safe ways (but legal and tax-transparent) to transfer around $500K from an USA bank account to an European SEPA account?

 

[CaptK]

Invoice it for IT services. Database, software, hardware, support, integration, testing and set up of a platform in any industry can easily cost that.

Actually do some work towards it just incase someone asks for proof.