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Notice code 330 (Default) — We changed the amount of self- employment tax on page 1 of your tax return because there was an er…
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330
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 self- employment tax on page 1 of your tax return because there was an error on Self- Employment Tax. The error was in the:Computation of the self employment tax and/or Transfer of that amount to page 1 of your tax return.
What it usually means
330 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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