QUOTE (southsider2k5 @ Sep 25, 2015 -> 11:03 AM)
IIRC, you can go so far as to have your direct deposit channel an amount to money to your brokerage account with each check. Call your brokers 800 #, they will be able to tell you for sure.
I think for my wife, her check still goes to her checking account but then we have an auto-transfer set up between that account and her IRA. So that's another way of doing it, but that might be why the auto-invest options don't seem to work right for me.