Verify economic impact payments

No, not yet.  We can only hope.

Probably, as this roll-out is almost as much of a mess as the first one was.  And the "overlapping" the filing of returns soon doesn't *help*.   I actually feel for the IRS - they didn't ask for this.

You would pull their Account transcript.

Stimulus info can be found at these links:

https://www.irs.gov/payments/view-your-tax-account

https://www.irs.gov/coronavirus/economic-impact-payment-information-center

https://www.irs.gov/coronavirus/get-my-payment

https://turbotax.intuit.com/stimulus-check/

"Is it possible that a client hasn't received the second stimulus, files their taxes and receive a recovery rebate credit, then get the stimulus in a separate payment?"

At this point, you turned the stimulus money into part of their tax return, so the rebate credit creates a net positive or negative tax return amount. Is that what you are asking?

The Draft Instructions specifically tell taxpayers that they can look it up using the first link that was given above.

Personally, I think I am going to ask the clients to give me either (a) both 1444 forms, or (b) a printout from that website dated AFTER January 15th (the last date the IRS can send out advance credits for the second credit).

I may accept their verbal amount if they say they received the FULL credits for BOTH payments.  But if they claim less, I want proof.