FOREX.com: No debit balances, no margin calls

At FOREX.com, your risk is limited to funds on deposit. There are no margin calls in forex trading. You need to maintain sufficient funds on your account to keep your positions open, and you will not be able to open larger positions than can be supported by your account balance. If your account falls below the required level to maintain your position(s), we will automatically close out all positions to ensure that you can't lose more money than you have in your account.