Well, it seems that the Internal Revenue Service has changed its previous method of operation.
On 14April09, I received a notice of error from the IRS. Last time, I was charged 104% immediately.
This time, the IRS gave me 21 days from the date of notice to pay the mistake on my Income Tax Return.
It was my subtraction error and I put the check in the mail the next day, thus avoiding any penalty or interest.
I am glad to see they have changed their method of operation and I think you will agree, this is much fairer than immediately charging 104% interest.
Some things do change.