WOWZY - your H&R Block office is whacked!
It's NOT income it is a rebate/credit of taxes already collected (in theory) so it's YOUR money! This is from IRS Pub 17 (Tax Guide 2001) straight off the irs site:
Advance payment of income tax.
If you received an advance pay-
ment of income tax in 2001, you do
not have to report this payment as
income on your federal income tax
return. This payment reduces your
rate reduction credit, discussed
next.
Now, if you didn't get your check, you can claim that as some kind of credit on line 47 of the 1040 or on the other forms, too. It's just an advance on your refund, pure and simple, taken out of money already withheld from your wages. If you wind up owing money to the IRS at the end of the day, that $600 was already figured in and they just gave you a loan!