The IRS announced that it will begin processing tax returns on January 28, 2019. However, many tax programs have not been fully completed to start filing due to the government shutdown.
The IRS continues to issue guidance that most filers should receive their refund within 21 days. They also remind filers that many tax software programs allow you to submit your taxes before the start of tax season. However, these software programs don't eFile until the IRS opens the system.