Earlier quoted context omitted.
Yes, open source IRS software. Tax breaks for bug fixes!
What do I get for sending in a malformed e-file that breaks the mainframe? There's some REALLY old code in the IRS processing systems and it would surprise me if any of it stood up to modern security designs. Also, you don't want to reveal how you determine who to audit.
Doesn't have to be complicated, pull 10% of the "simple" forms, 90% of complicated.
Simple forms would be the 1040EZ, 1040s w/ std deductions & no other "business" forms.