IRS Letters and Forms
Notice code 491

Notice code 491 (Default) — Your Additional Child Tax Credit was reduced or not allowed because your dependent child’s name and/…

Your Additional Child Tax Credit was reduced or not allowed because your dependent child’s name and/or TIN were invalid. Su Crédito Tributario Adicional por Hijos fue reducido o no fue permitido porque el TIN de su hijo(a) dependiente era inválido.

What to do next

Start with these steps before you reply.

491

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

Your Additional Child Tax Credit was reduced or not allowed because your dependent child’s name and/or TIN were invalid. Su Crédito Tributario Adicional por Hijos fue reducido o no fue permitido porque el TIN de su hijo(a) dependiente era inválido.

What it usually means

491 is in our IR Manual catalog. Official wording is dense — we translate it for business owners and individuals and map realistic next steps.

Have this letter in hand?

Bring it to a free call and leave with a plan for your reply.

Ask about this letter