Refunds will be delayed for individual returns that include certain credits; some states are also delaying refunds.
Federal refunds for individual returns whose refunds include the Earned Income Tax Credit (EITC) and/or the Additional Child Tax Credit (ACTC) will be delayed until mid-February, at the earliest. Taxpayers should submit these and all other returns as usual, as most refunds will still be issued within the normal processing time of 21 days (after IRS acceptance).
Per the IRS: "If you claimed the Earned Income Tax Credit (EITC) or the Additional Child Tax Credit (ACTC), you can expect to get your refund by February 27..."
Some states are also delaying the issuing of refunds for taxpayers.