Failure to pay Estimated tax penalty is overstated by TT

[bettypaystaxes]

I received a notice from the IRS that stated we had overpaid our "failure to pay proper estimated tax penalty" .

We received a refund.  TT calculated it at almost three times the actual amount.  

This has happened two or three times in the past few years and the IRS has always caught it. I've looked at the "annualized" method and it doesn't apply to us. 

What could be going on? 

Thanks!

[Critter-3]

The TT program ( and my professional program as well ... this is not just the DIY programs where this happens) figures the ESTIMATED underpayment penalty based on the info you entered in the program however the fed/state have the right to calculate the penalty based on the info they have on file and the date you make the payment ( TT assumes you will pay on the last day of filing season ... if you pay earlier then the amount could be less)   and the amounts are not always the same  so enjoy the refund of the excess penalty.    In the future you can override the estimated penalty if you wish and wait for the IRS/State  to bill you instead. 

[fanfare]

OR 

Use other  tax software that calculates your estimated tax penalty correctly based on the dates you paid.

@bettypaystaxes