IRS Letters and Forms
Notice code 488

Notice code 488 (Default) — You figured or transferred your social security self- employment tax incorrectly on Form 1040-PR. We…

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

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488

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

You figured or transferred your social security self- employment tax incorrectly on Form 1040-PR. We changed your self-employment tax accordingly. Usted calculó o transfirió incorrectamente la contribución sobre el trabajo por cuenta propia. Por lo tanto, le cambiamos su contribución sobre el trabajo por cuenta propia.

What it usually means

488 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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