Already submitted your tax return to the IRS? Here's how to find out when your refund will arrive in your bank account.

The IRS began processing tax returns Monday. For filers who submit their returns electronically using direct deposit, refunds are generally issued in less than 21 days. There is a caution from the tax agency, however, that urges “taxpayers not to rely on receiving refund by a certain date, especially when making major purchases or paying bills.