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Notice code 30 — We found an error in the computation of Total Income Tax for a fiscal year with two tax rates. Note …
What this IRS notice code means, and what to check before you reply.
What to do next
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30
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What the IRS language says
We found an error in the computation of Total Income Tax for a fiscal year with two tax rates. Note — for 1120, A, 990T, C with tax periods other than 198707 thru 198805 and F990TS with Org. Code 1, 2 or 3, asterisk these math error
What it usually means
30 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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