On a related note, a Stanford tax law professor Joseph Bankman had run trials of pre-filled forms for a few California state taxpayers. Listen to his journey on Episode 760 of PlanetMoney podcast:

http://www.npr.org/sections/money/2017/03/22/521132960/episo...

TL;DR:

* 99% of people liked the pre-filled forms

* He took this idea to California state congress, but Congresspeople were "warned" about him by Intuit lobbyists

* He hired his own lobbyist but lost by 1 vote in the Congress

Edit: Grammar