if you are looking to conduct business with either customers or suppliers in the US, you will need a convenient way to receive money from your buyers, and to pay for goods or services that you may buy in the US. As an individual or a small company located outside the US, the traditional solution is to establish a business checking account in a US bank.
Through your US bank account, you can pay your US suppliers via check or by wire transfer. Likewise, your US customers and clients can pay you by check, by direct deposit or by wire transfer into your US bank account. You can move money into, or out of, your US bank via international wire transfer through your local bank in your home country.
The difficult part for most small businesses is actually establishing that bank account in the US