I do an occasional Iowa return which typically don't involve estimates.  I said I was curious how common the function was in other softwares.  Your examples represent products on the lower end of the price spectrum.  When you are looking to keep your software costs low, you typically are in the trade off game of giving up something to get something else with another product.  As another side note, just because something seems like a really simple add on doesn't mean that it is a slam dunk for Intuit to add.