IRS Letters and Forms
Notice code 331S

Notice code 331S (1040SS) — We changed the amount claimed as excess social security tax withheld or tier 1 RRTA withheld on llin…

What this IRS notice code means, and what to check before you reply.

What to do next

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331S

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 excess social security tax withheld or tier 1 RRTA withheld on lline 8 of your, Form 1040-SS due to a computation error.

What it usually means

331S 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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