A limit order is an instruction you give to your transfer provider to only carry out an international money transfer when the desired exchange rate is achieved. You can choose your desired exchange rate, set the limit order and relax in the knowledge your exchange will go ahead as soon as the rate you’ve specified is available. This may even happen when you’re asleep, as the global market operates 24/7 (except at weekends). They can save you plenty of money as long as you’re prepared to be patient and wait to receive your desired rate.