To prevent fraudulent income tax return filing, the RT Bank (the bank handling the refund transfer) will only deposit money into the same account four (4) times.  If you are receiving both a federal and state refund this would count as two deposits.  Therefore, you could only use that same account for one more return that would also be receiving a federal and state refund before reaching the limit of four deposits. 

If you attempt to use the same banking information a fifth time, you will receive the error message "The bank account information has already been used four times. Please enter a different account.".  You will be unable to continue e-filing until you have entered a different bank account.  This check is in place for your security and your convenience. 

For more banking information:
How do I enter my Direct Deposit or Bank Account Information?  click here
What happens if I enter incorrect banking information?  click here