Contact the Taxpayer Advocate Service
https://www.taxpayeradvocate.irs.gov/contact-us/#FindlocalTAS
TurboTax receives no information from the IRS after they accept your return. No one at TT knows why the IRS reduced your refund. However----we can tell you that a lot of refunds were reduced for 2021 because people made so many mistakes that year with the recovery rebate credit and with the child tax credit. Only the IRS can tell you why your refund was reduced. They send a letter to you a few weeks after they send the refund---the letter told you why the refund was reduced.
LOTS of people have made mistakes on 2021 returns with the recovery rebate credit by "forgetting" that they received the $1400 per person stimulus checks last year. They answered no to the questions for the recovery recovery rebate credit and put the $1400 per person on line 30 of their returns. But you cannot get it twice, so the IRS removes it when it is there by mistake. The IRS sent letter 6475 showing that you received the 3rd stimulus check.
It is very important that if you filed a joint return—-the IRS sent letter 6475 to EACH spouse. You had to enter the total amount received. Many people misunderstood and entered only the amount from one of the letters.
Try checking your online account with the IRS (and if you filed a joint return—check for BOTH of you)
https://www.irs.gov/payments/your-online-account
Does the IRS show that you received a $1400 per person stimulus or EIP check in 2021? Did you receive it? When you were asked on your tax return did you say no? Was there $1400 per person on line 30 of your tax return?
If the IRS says you got $1400 per person last year but you did not receive it you can have it traced.
LOST THIRD STIMULUS CHECK
Or was there a problem with the child tax credit?
If it is short by $1800 or $1500 or a multiple of that amount --- maybe a mixup regarding the advance child tax credit payments. If you received monthly child tax credit payments of $250 or $300 per month between July and December of 2021, then you got letter 6419 from the IRS, and you were required to enter the amount of the advance payments. Only the remaining amount of the CTC should have been on line 28 of your Form 1040.
If you need to trace a payment that the IRS says has been issued to you, mail or fax a completed IRS Form 3911, Taxpayer Statement Regarding Refund.
TurboTax does not get any information from the IRS after you file your tax return, so no one at TT knows why your refund was less.
This is a common question. TurboTax doesn't know why this happened, but the IRS does.
The Bureau of the Fiscal Service (BFS) can take all or part of your refund to payoff certain other obligations:
Also see this IRS article Tax Season Refund Frequently Asked Questions in the section Why is my refund different than the amount on the tax return I filed?
You can also contact the IRS .
You can call toll-free at 1-800-829-1040 or contact a Taxpayer Assistance Center Local IRS Office.