Internal Revenue Service will process tax returns beginning January 28, 2019 and provide refunds to taxpayers as scheduled. The filing deadline to submit 2018 tax returns is Monday, April 15, 2019 for most taxpayers. Taxpayers who live in Maine or Massachusetts have until April 17, 2019 to file their returns. The IRS strongly encourages people to file their tax returns electronically to minimize errors and for faster refunds.