unlimited. Must be declared for import from 15.000.- US Dollar up. Also declaration needed for taking out of the U.K. if more than 10.000.- Pound Sterling
WISE will deduct fees, and they are included in the amount the recipient will receive. So if you wish to compare WISE to any other exchange method, you mustn't look at the rate WISE is using (!), but at the rate which is determined from the amount the recipient is receiving
i used to arrive with 50.000.- Euros in Cash . . . intended as payment for large bunks of wholesale jewelry. The advantage of exchanging with private money changers, compared to a bank transfer, was for real. It would be a difference of nearly 1000.- Euro
I use WISE, they are great. Also if you need a proof that the monthly transfer comes from abroad, with WISE you choose "costs for living expenses" and it will show in your bankbook coded as an international transfer (despite WISE uses a Thai bank account for the last step)