above $10,000 you need to declare the cash (officially) but why do you risk carrying big amount of cash? You can send money thru bank i dont refer you to send money thru western union coz its charges are heavy and they give you less in exchange rate as well. So the best option is to send money thru bank (swift- it is the way to transfer money form one bank to another) the only thing you need to know is a/c number, account name, banks name, branchs name and swift code of the receiving bank.. it saves you from lots of unforseen hazard of carrying cash.