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Notice code 174
Notice code 174 (Default) — We changed the total adjustment on page 1 of your tax return because it was figured incorrectly.
What this IRS notice code means, and what to check before you reply.
What to do next
Start with these steps before you reply.
174
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 total adjustment on page 1 of your tax return because it was figured incorrectly.
What it usually means
174 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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