IRS NOTICE REFERENCE
Understanding your CP523H notice
We are notifying you that your installment agreement for the Shared Responsibility Payment (SRP) balance will be terminated unless payment is received.
General information only. Not legal or tax advice.
Notice details
- Notice code
- CP523H
- Category
- Installment agreement and collection alternatives
- Severity tier
- Tier 4 — Escalation warranted. The notice involves collection enforcement, appeals rights, or significant penalty exposure.
- Governing law
- §6159; §6331 (Internal Revenue Code sections)
- Statutory response window
- 30-day window — always confirm the exact deadline against the date printed on your notice.
- 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.gov — Understanding Your IRS Notice
What this notice is
We are notifying you that your installment agreement for the Shared Responsibility Payment (SRP) balance will be terminated unless payment is received.
Source: IRS.gov. Reproduced for reference. General information — not legal or tax advice.
What the IRS says to do
You must pay the amount you owe immediately but no later than 30 days from the date shown on your notice to keep your installment current. Read your notice carefully. It explains that you have defaulted on your installment agreement and the actions you must take to bring your account current. Go to the Payments page to make a payment or learn about the other payment options available. See if you qualify for an offer in compromise (OIC) which would allow you to settle your tax debt for less than the full amount you owe. Request a temporary collection delay if you’re experiencing financial hardship. Contact us immediately at the phone number shown on your notice if you can’t pay the full amount you owe. We may be able to reinstate or restructure your installment agreement – fees may apply. Alternatively, you can contact us by using the Document Upload Tool to securely upload your written response and supporting documentation. You must enter the access code provided on your notice or letter to use the tool and your response must be received within 30 days of the date shown on your notice. If you can’t send your documents by the Document Upload Tool, mail your documentation along with a copy of your notice to the address provided in the “Additional Information” section of your notice.
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 5.14.1 — 5.14.1 Securing Installment Agreements
- IRM 5.14.5 — 5.14.5 Streamlined, Guaranteed and In-Business Trust Fund Express Installment Agreements
- IRM 5.14.2 — 5.14.2 Partial Payment Installment Agreements and the Collection Statute Expiration Date (CSED)
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-cp523h-notice
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)