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Notice code 266 (Default) — We changed the total credits on page 2 of your tax return. Some credits are limited to the differenc…
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What to do next
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266
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 total credits on page 2 of your tax return. Some credits are limited to the difference between your tax before credits and tentative minimum tax from Form 6251, Alternative Minimum Tax-Individuals. The limitation to your credit was not applied or was applied incorrectly.
What it usually means
266 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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