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Notice code 661 (Default) — Based on information provided on your return we have determined you are eligible to claim the Making…
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661
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What the IRS language says
Based on information provided on your return we have determined you are eligible to claim the Making Work Pay and Government Retiree Credit and have computed the credit for you. If you elect to claim the Making Work Pay and Government Retiree Credit in future years a completed Schedule M, Making Work
What it usually means
661 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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