Letter 4439

Notice details

Notice code

Letter 4439

Category

Appeals and collection due process

Severity tier

Tier 4 — Escalation warranted. The notice involves collection enforcement, appeals rights, or significant penalty exposure.

Governing law

§6320; §6330; §6015 (Internal Revenue Code sections)

Escalation flag

This notice carries a forfeitable right, a hard statutory deadline, or criminal-preparer risk. It is flagged for escalation in the TaxRiskOS workflow.

Source

IRS Taxpayer Advocate Service

What this notice is

This letter is issued to the taxpayer when the Independent Office of Appeals (Appeals) makes a determination on the taxpayers Equivalent Hearing (EH) and Innocent Spouse request.

Source: IRS Taxpayer Advocate Service. Reproduced for reference. General information — not legal or tax advice.

What the IRS says to do

If you have questions, you can contact the person shown at the top of the letter.

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:

• IRM 5.1.9 — 5.1.9 Collection Appeal Rights
• IRM 5.19.8 — 5.19.8 Collection Appeal Rights
• IRM 5.12.6 — 5.12.6 Appeals Processes Involving Liens

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.taxpayeradvocate.irs.gov/notices/letter-4439/

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.

Check this notice’s deadline (free tool)

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