Was it for 2021? $1800 could also be a mistake made with the child tax credit. If you did not enter six months of advance child tax credit payments that you received between July and December of 2021, you would have had too much on line 28 and the IRS would have caught the mistake and reduced your refund.
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.
The IRS knows how much they sent to you for the 3rd stimulus check and they know how much they sent for advance child tax credit payments. If you answered something incorrectly on your tax return then the IRS made a correction that resulted in a reduced refund for you.
The IRS will send you a letter that explains why your refund was reduced or why you owe more. Meanwhile it might help you to check your online IRS account. If you filed a joint return, check for both spouses.
https://www.irs.gov/payments/your-online-account
**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.**
