In addition to being very complex, tax codes change yearly. Whoever might take this on would have to take on that a tax code change made in December needs to b

In addition to being very complex, tax codes change yearly. Whoever might take this on would have to take on that a tax code change made in December needs to be interpreted: What questions need to be asked to fill in the new line on one or more IRS forms? And any of the states can likewise make last minute changes. It's nasty time pressure because you have weeks to implement, test, and ship the accommodation to new requirements. I also observe that the tax code was crazy complex before personal computers became popular in the eighties. Blaming Turbo Tax for the complexity is misplaced blame, though no argument they have a vested interest in keeping them complex, and they pay lobbyists to safeguard their interests.