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Notice code 356
Notice code 356 (1040-SS) — We changed the amount of tax on line 5 of your Form 1040-SS. There was an error in the transfer of t…
What this IRS notice code means, and what to check before you reply.
What to do next
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356
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 of tax on line 5 of your Form 1040-SS. There was an error in the transfer of the amount from line 18 of your Form 8959, Additional Medicare Tax, to line 5 of your Form 1040-SS.
What it usually means
356 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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