Yes, it's true according to the NASD/NYSE rules. Because an IRA or Roth IRA is a cash account (not a margin account), it can't be flagged as a Day Trading account. Therefore, you can day trade all you want in the cash account. However, since all transactions require 3 days to settle, you can't really day trade much. I suppose the only disadvantage is that you have to wait for 3 days for your transactions to settle/clear before you can trade again.