Where do I file for the stimulus check?

[Critter-3]

If for some reason you do not receive your stimulus, you can have it added to your refund. The IRS will stop mailing payments on 1/15 and will  not begin processing returns until  sometime after 1/25  so all stimulus payments should have been received by then and you can file the return with the credit.

Please wait until you are certain there is no second payment, then you can follow these steps, if necessary. 

• After you have entered your tax information and are ready for the Federal Review, stimulus will be the first question.
• If you are trying to trigger it: 
1. go to Other Situations
2. click Done. 
3. The next question will ask about payments received.
• The program will determine the missing amount and add it to your refund.

Please see: Is My Second Stimulus Check on the way? and the IRS stimulus website