The IRS has not announced when it will begin accepting 2018 tax returns. With all of the programing changes it has to make and test I expect that filing in the last week of January 2019 may be optimistic.
Also, they are required to hold tax returns with Earned Income Credits and Child Tax Credits until February 15, 2019. Some taxpayers may not receive their refunds until late February. There is nothing we or any tax preparer can do to make this faster.
We will not begin our regular tax season until January 25th. We may be able to complete some tax returns before then when our 2018 software arrives.