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Notice code 343 (Default) — We can’t allow your earned income credit because you excluded income under Section 931, Section 933,…
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343
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What the IRS language says
We can’t allow your earned income credit because you excluded income under Section 931, Section 933, or Form 4563 or you did not maintain a home in the United States for 6 months or more. We have changed your tax return accordingly.
What it usually means
343 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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