The Mercury News: Q&A: Big tax-law changes, IRS understaffed so expect big surprises this tax season.
https://www.mercurynews.com/2019/01/27/qa-big-tax-law-changes-irs-understaffed-expect-big-surprises-this-tax-season/
We were already dealing with the new tax laws and additional changes, plus additional requirements for Head of Household status. Please send your papers to your preparer early.