It is possible. I am a Bulgarian, and I managed to do that. Best thing is to just contact the support by dropping them an email, and theyu2019ll write back with all the documents that are required for you to register with TD Ameritrade (few banks statements). The whole thing took like month and something, since in the end they send you a regular mail with your account number and PIN, but it is a lot faster to just contact the support and ask to activate your account.Hereu2019s what the support answered to me: Thanks for your email and your interest in TDA. I can confirm that we are able to open accounts for residents of Bulgaria. To get started, please visit the following link: https://invest.tdameritrade.com/... You will need to print out and sign the application before faxing it to us. Please be sure to include a passport copy, a bank or brokerage statement (in English), and a W-8BEN. In order to transfer from IB to TDA, you will need to submit a Transfer Form.