This means the roughly three million people who typically file returns claiming these credits before mid-February will likely have to wait longer for refunds this year.
Other filers with more complex returns, including those claiming residential energy credits and general business credits, will need to wait until late February or March for their returns to be processed. The full list of forms being accepted in late February or March can be found on the IRS website.
If you're a victim of identity theft, you may also have to wait for your refund. The IRS has been struggling to keep up with surging tax fraud, and identity theft victims often experienced delays of at least 180 days last tax season, according to the Taxpayer Advocate Service.
Otherwise, you can generally expect to receive a refund within three weeks after the IRS receives your return. Last year, more than 110 million taxpayers collected an average refund of $2,803 a piece.