Are taxpayers who have set up automatic debit savvy enough not to send in the check?

FORBES: Whoops! IRS Sends 200,000 Balance Due Notices By Mistake

But the bigger problem is the danger that folks who already have an automatic payment in process will cower and send in that check.

FORBES: Whoops! IRS Sends 200,000 Balance Due Notices By Mistake

The automatic draw and the paper check could hit the IRS in close proximity, even on the same day.

FORBES: Whoops! IRS Sends 200,000 Balance Due Notices By Mistake

In contrast, if you get an extra large IRS refund check or automatic deposit to your bank account, you should be.

FORBES: Tax Refund Too Good To Be True? Don't Spend It