I was aware of the Tax Reform legislation earlier in 2018, but I didn't spend any time researching what it would mean for tax filing, until this morning. The Form 1040 has been completely redesigned, it is much shorter than it was for 2017 and earlier. There's no longer a 1040EZ or 1040A, everyone will submit the 1040. The consequence of making the 1040 shorter, however, is that now there are a number of additional schedules associated with the 1040, one or more of which all filers will now have to fill out! Some of these schedules look like they're not really ready for prime time, 1040 Schedule 5, for instance, is pretty short and most of its lines are labelled "reserved." Seems to be a bit of a sham reform, the administration promised a postcard sized 1040, so they made it shorter - at the cost of the taxpayer having to fill in additional schedules! Fortunately, the lettered schedules remain unchanged, 1040 Schedule B for interest & dividends for instance.

According to one article I read, 89% of taxpayers use a proprietary online preparer, so they may not even be aware of the changes.

Same here and the interview process in TT is much the same but I like to understand the forms since I have foreign income to report and foreign tax credits to claim. I found all the new schedules much more confusing than the old 1040, but I’m sure I will get used to them in time, particularly once the corrected schedules are made available by the IRS and TurboTax.

I still use the old paper and pencil method, simply because it's always going to be easier to use the same method you used last year and the year before that (etc.) Hopefully there's a fairly simple equivalence between last year's 1040, and the new 1040 plus one or more of the new numbered schedules.

I used TurboTax for a couple of years, 2005 and 2006 maybe, when my daughter had to file for Oklahoma, Missouri and Massachusetts state tax over the course of two years. It soon became obvious turbotax couldn't handle flyover state tax. (They were proficient with MA.) Probably they've got it under control by now...

At the time (this was many years ago) they obviously hadn't yet invested any effort in Oklahoma state tax. If I remember correctly, they simply offered an online version of the paper state form rather than the questionnaire format that I was familiar with for federal, NY & MA. It did the basic addition and other calculation for you but nothing else.

As for the year my daughter split between Missouri and Massachusetts, I may have ended up doing hers manually that year (2007 maybe?)