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Notice code 628 (1040A) — We changed the amount claimed as Child Tax Credit and/or Additional Child Tax Credit on your Form 10…
What this IRS notice code means, and what to check before you reply.
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628
Read the notice carefully and note any deadline. Gather returns, notices, and payment records. Book a free strategy session before responding if the amount is large, unclear, or collection language appears.
What the IRS language says
We changed the amount claimed as Child Tax Credit and/or Additional Child Tax Credit on your Form 1040A because there was an error on Schedule 8812, Child Tax Credit. The error was in the: computation of the credit on Schedule 8812 transfer of the amount of Child Tax Credit to line 35 and/or Additional Child Tax Credit line 43 of your Form 1040A and/or Schedule 8812 was missing or incomplete.
What it usually means
628 is in our IR Manual catalog. Official wording is dense — we translate it for business owners and individuals and map realistic next steps.
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