IRS CP162E Notice: Partnership or S Corporation Return Penalty

Identify why the IRS issued CP162E

Read the notice calculation and every enclosure before deciding whether to pay, call, or send a written explanation. Confirm the entity name, return type, tax year, original due date, extension status, filing date, number of partners or shareholders, and the specific failure the IRS identified.

The IRS CP162E page lists several possible reasons: a late or incomplete partnership or S corporation return, a missing partnership tracking report, or a failure to file electronically when required. Those issues use different facts and supporting records, so a response to one does not automatically resolve another.

Check whether the return or extension was filed on time

Compare the notice with the electronic acceptance, timely mailed-return evidence, designated private-delivery record, or Form 7004 acceptance for the period. Preparing a return or extension is not the same as proving the IRS accepted it or that a mailed filing was timely.

If the return was filed on time, the IRS CP162E page says an authorized officer or partner can call the number shown on the notice and should be prepared to provide documentary evidence such as a timely extension or timely-mailing proof. Keep a dated record of the call and any documents the IRS asks to receive.

Verify the penalty using the instructions for the affected tax year

Penalty rates are adjusted over time. Do not calculate an older assessment using a current webpage example, and do not apply a prior-year amount to a newer return. Use the Form 1065 or Form 1120-S instructions for the tax year involved and reconcile the IRS calculation with the entity's actual filing history.

Respond promptly when information is missing

If the IRS correctly identified missing required information, submit the missing material using the instructions and address on the notice. The IRS CP162E page says the incomplete-return penalty can continue until the information is received, for up to the applicable limit.

If the entity believes the information was not required, be prepared to explain why. If the information could not be obtained for reasons outside the entity's control, organize a chronology of requests, follow-up efforts, and the records ultimately obtained. A reasonable-cause conclusion depends on the complete facts and the IRS's review.

Review penalty-relief paths without assuming approval

The IRS states that an entity that was correctly charged for filing late may mail a written explanation requesting reasonable-cause abatement to the IRS office where the return was filed. The explanation should connect the failure, the circumstances outside ordinary control, the entity's compliance efforts, and the steps taken after the problem was discovered. The IRS decides whether the facts meet the standard.

The IRS CP162E page also describes Rev. Proc. 84-35 relief for a qualifying partnership with 10 or fewer partners. That route has specific partner-type, allocation, election, and timely partner-return requirements and does not apply merely because a partnership is small. It is a partnership rule, not S corporation relief.

The IRS administrative-penalty-relief page says First Time Abate is transitioning to Automatic Exemption from Penalty beginning in summer 2026 and lists partnership and S corporation failure-to-file penalties among the potentially eligible penalties. Eligibility depends on the return type, tax period, timely-compliance history, and other requirements. If CP162E shows an assessed penalty but the entity believes current administrative relief should have applied, the IRS directs the taxpayer to contact it.

Use the notice response channel and preserve authority records

Follow the CP162E mailing address, phone number, and requested format rather than sending a response to a generic IRS address. Keep the complete response, supporting exhibits, signature, payment confirmation, and reliable delivery evidence with the entity's permanent tax records.

An officer or partner may be able to discuss the entity's account as described on the notice. A CPA or other eligible representative generally needs a properly completed Form 2848 for the specified form, tax period, and matter, plus a signed engagement that includes representation. A website inquiry or prior return-preparation authorization does not create that authority.

CP162E review checklist

• The complete CP162E notice, every enclosure, and the envelope when available
• The filed Form 1065 or Form 1120-S and all required schedules for the tax year
• Electronic filing and Form 7004 acceptance or rejection records
• Certified-mail, registered-mail, or designated private-delivery evidence
• Partner or shareholder ownership records for the entire tax year
• Missing-information requests, tracking reports, and documents later submitted
• Electronic-filing requirement, return-count, waiver, or exception records
• Prior three-year filing and penalty history relevant to administrative relief
• A written chronology of the failure, discovery, corrective action, and IRS contacts

Where CPA help may be useful

A professional review can help organize the facts and calculations, but it cannot guarantee an IRS decision, penalty result, payment arrangement, appeal outcome, or litigation result. Depending on the agreed scope, support may include:

• Identify the return, tax period, penalty type, and response date covered by the notice
• Reconcile filing and extension evidence with the IRS calculation
• Check the tax-year rate, counted months, and partner or shareholder count
• Organize missing information and an evidence-based response
• Evaluate whether reasonable cause, Rev. Proc. 84-35, or current administrative relief warrants review
• Communicate with the IRS when representation is authorized and included in the engagement scope