What days does the IRS mail out refunds?

The IRS does not have specific days designated for mailing out refund checks, as the timing can vary based on several factors, including the method of filing and the complexity of the return. Generally, taxpayers who e-file and choose direct deposit can expect their refunds within 21 days, while those who file paper returns may wait longer. Refunds are processed continuously rather than on specific days, so it’s best to check the IRS "Where's My Refund?" tool for real-time updates.