IRS NOTICE REFERENCE
Understanding your letter 227
Factual reference for Letter 227. General information only — not legal or tax advice.
General information only. Not legal or tax advice.
Notice details
- Notice code
- Letter 227
- Category
- Penalty
- Severity tier
- Tier 3 — Time-sensitive response. The notice carries a response deadline or may affect account standing if ignored.
- Governing law
- §4980H; §6751 (Internal Revenue Code sections)
- Source
- IRS.gov — Understanding Your IRS Notice
What the IRS says to do
Read your letter and attachments carefully. These documents explain the next steps available and provide information on how the case will be resolved. If appropriate, then complete the response Form 14764 PDF indicating your agreement or disagreement. If you disagree with the proposed ESRP, then you must provide an explanation of why you disagree and/or indicate changes needed on Form 14765 PDF . Return all documents as instructed in the letter by the response date. If you agree with the proposed ESRP, then follow the instructions to sign the response form and return it with full payment in the envelope provided. If you disagree with the proposed ESRP, then you must provide an explanation of why you disagree and/or indicate changes needed on Form 14765 PDF . Return all documents as instructed in the letter by the response date. If you agree with the proposed ESRP, then follow the instructions to sign the response form and return it with full payment in the envelope provided.
This is the IRS’s own guidance reproduced from the IRS notice page. It describes the IRS’s process — it is not legal or tax advice from TaxRiskOS.
Governing IRS procedure (Internal Revenue Manual)
The IRS’s own internal procedures for handling this notice type are documented in the Internal Revenue Manual:
Reference to published IRS procedure. General information — not legal or tax advice.
Official IRS reference
Read the official notice page on IRS.gov: https://www.irs.gov/individuals/understanding-your-letter-227
Related tools
TaxRiskOS is workflow software for practitioners — it captures the notice, computes the deadline, surfaces the escalation tier, and builds a document checklist. It documents process; it does not give advice or draft responses.
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