For 2003 and later returns
Go to Form 2210. At the top of the form, enter the date that the tax was paid or April 15th, whichever is earlier. Mark the appropriate box on line A-F. Then 2210 will calculate the penalty.
For 2002 and earlier returns
Go to the Federal/State Estimated Tax Paid Worksheet. On the top section, you will see File/Pay under the due dates. In this entry, you will need to enter the date that the return is filed or the tax was paid. 2210, the regular method, will not calculate without this information.
This information applies to all years of the UltimateTax software.