On Screen 12 I can calculate the changes in the current year that will occur in the following year, so that the program will calculate the taxable income in the following year on an ES worksheet.  I can't see how it then calculates the tax due on taxable income, or populates a form 1041-ES for the four estimated payments.  Form 1041-ES doesn't even show up as an available form to print.  Two tech support experts scratched their heads over this, and our telephone conferences both timed out without providing a solution.  I'm still stumped.