I just discovered that Fidelity changed the way that they report my restricted stock unit (RSU) sales in 2014. For 2013 (the 1099-B issued in early 2014), included the cost basis of the shares that were vested and sold. For 2014, the basis was not reported.
I didn't catch this, so I checked the "basis is reported to the IRS" box in TaxAct. TaxAct dutifully reported my small gain on line 1a of schedule D and did not generate form 8949.
The question is whether I should go ahead and file an amended return, or should I wait and only act if I'm contacted by the IRS?