The Taxpayers Protection Alliance spokesperson quoted at the bottom says: > Private tax services "have every incentive to find the deductions that will yield them the best return," Zupkus said, adding that the IRS wants "to extract as much as possible from the taxpayer." I think it's worthwhile to acknowledge that there are indeed slightly different incentives involved when it comes to the private sector handling tax…
It's not even correct - the IRS wants to follow their rules as closely as they can. I have had the IRS unprompted send me an additional refund because of a mistake I made on my forms, and they caught. (They also included a letter saying that if I thought my mistake was right, I could fight the refund, or file a new amended form and go for a bigger one.)
It is a massive organization filled with uncoordinated people doing their level best to produce Brownian motion.