Some of the $600 stimulus payments have reportedly been sent out as early as Tuesday evening.

Treasury Secretary Steve Mnuchin tweeted that the United States Treasury “has delivered a payment file for” the Federal Reserve for “Americans’ Impact Payments” and “payments may begin to arrive in some accounts by direct deposit,” while paper checks will begin being mailed on Wednesday (December 30) morning.

The Internal Revenue Service’s official website also confirmed direct deposit payments of the second round of COVID-19 stimulus checks begin being delivered via direct deposit on Tuesday night and paper checks were mailed on Wednesday, according to a news release.

The IRS said no action is required by eligible individuals to receive a second payment, but some direct deposit payments may be shown as “pending” or “provisional payments” in their banks accounts before the official date of January 4, 2021.