You can make a wire payment to TransferWise the same way you'd wire money to anyone else. We'll show you our details, and you set up your wire to us.
For USD, you can send up to $1,000,000 from licensed states (up to $50,000 from Nevada, Hawaii or US territories), and the money will reach us within 1 working day. Your bank will normally charge $15-30 to make the wire.
And as long as your money reaches us before 4:00 pm (EST) the next business day, the exchange rate you get is guaranteed.