The IRS is not going to kick your door down.
Letter 6475 is sent by the IRS to people who received the 3rd EIP payment. If you did not receive that stimulus check then they would not send you that letter. If you are eligible to get the 3rd EIP payment you can get it by answering the questions in Federal Review for the recovery rebate credit. The EIP amount will show up on line 30 of your Form 1040 and will be added to your refund.
PREVIEW 1040
https://ttlc.intuit.com/questions/1901539-how-do-i-preview-my-turbotax-online-return-before-filing
Click on Tax Tools on the left side of the screen. Click on Tools. Click on View Tax Summary. Click on Preview my 1040 on the left side of the screen.
If you mean that they sent you the 3rd EIP payment but you did not receive the payment then you need to have it traced.
LOST THIRD STIMULUS CHECK
https://www.irs.gov/newsroom/questions-and-answers-about-the-third-economic-impact-payment-topic-j-p...
LOST 1st or 2nd STIMULUS CHECK
Q F1. I received my payment by check, but it was lost, stolen or destroyed. How do I get a new one? ...
A1. If you received your payment by check and it was lost, stolen or destroyed, you may need to request a payment trace so the IRS can determine if your payment was cashed. See How do I request a payment trace to track my first or second Economic Impact Payments?
If a trace is initiated and the IRS determines that the check wasn’t cashed, the IRS will credit your account for that payment, but the IRS cannot reissue your payment. Instead, you will need to claim the 2020 Recovery Rebate Credit on your 2020 tax return if eligible.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
