Thanks for replies but dollars don't help me.
I don't want reais to transfer money for a house purchase - I know you do this by sending dollars. I want them to lock in the exchange rate proir to emigrating. It appears that this is not possible.
The exchange rate has fallen from almost R$6 to R$3.50 since I first started to try to do this a few years ago. Ouch!
Polvo,
It sounds like you should go to a forex broker and buy an option on some reais for future delivery at x exchange rate. Your only problem will be the amount of money you are talking about locking in.
For smaller amounts like 200k you will probably need to go to your bank and talk to their commercial department. They usually operate a forward buying and selling system for importers and exporters, so you could use this.
Try xe.com, they might also do what you want.
Hope that helps.
Regards,
Rob.