What is my next step for stimulus fund receipt, as I only received ONE check for $600?

[KrisD15]

If you should have received more for the third Economic Impact payments, file a 2021 tax year return and the additional (missing) amount will be added as a refund. 

If using TurboTax, the question of how much you received will be asked. 

For the first and second payments, you need to file a 2020 tax year return, or an amended return if you already filed. 

IRS LINK

[VolvoGirl]

600 was probably for the 2nd Stimulus payment that came between Dec and February 2021.  That was for 2020.  Did you get the first Stimulus payment 1,200 from last spring?   The first 2 were for your 2020 return.   Did you file 2020?   Did you have an amount on line 30?

The 3rd Stimulus payment is 1,400 per person and came out starting in March.   If you didn't get it you claim it on your 2021 return as the Recovery rebate credit on line 30.   Turbo Tax will ask if you got it and how much.   

To get to the stimulus questions in TurboTax at any time, you can search for stimulus or recovery rebate credit then hit ENTER and there should be a Jump to link

If you are trying to trigger it,

Click on Other Tax Situations at top

Click on Let's get started

Answer some questions then Continue

Then click on Let's keep going

Next screen is for the Third Stimulus, if you qualify

If you did not get prompted to enter your stimulus information, that means you either:

1. Filed as a dependent being claimed on another tax return, or 
2. have an AGI too high to claim the recovery rebate