(KTNV) -- It's tax time but don't expect a call from the IRS.
If you get a call from someone claiming to be with the IRS, be suspicious. Federal authorities are trying to get the word out about what they are calling the largest nationwide phone scam ever.
Officials said more than $1 million has been stolen from thousands of unsuspecting people.
The calls involved an IRS imposter who will tell you that you owe taxes that must be paid with a pre-debit card or a wire transfer.
Authorities said the scammers threaten arrest, deportation or even loss of a business or driver's license for those who do not pay up.
According to the Inspector General, real IRS officials typically reach out by mail first and don't demand immediate payment by debit card, credit card or wire transfers.
The IRS asks anyone who has received a phony call to report it. They said they have already received 20,000 reports about the scam.