IBKR Pro and IBKR Lite does not implement a minimum funding requirement to open an account nor is there a required minimum amount to keep an account open. IBKR will automatically close accounts maintaining a zero balance.
What is the minimum amount to keep my account open?
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How do I change my account type if I selected the wrong one?
Can a cash account have a negative balance in any currency, and how does Interactive Brokers prevent this?
Can I have one account as IBKR Lite and one account as IBKR Pro?
Is there a minimum account balance on TFSA accounts?