Action required — respond by the deadline

IRS CP259 Notice: Business Return Not Filed

A CP259 notice means the IRS has no record that your business filed a required return — typically a Form 941 payroll return, 1120 corporate return, or 1065 partnership return — and is asking you to file it or explain why none is due.

Deadline: Respond by the date on the notice (file or explain)

What a CP259 actually means

The IRS expects a return for every period a business account is active. Miss a quarter of payroll filings or an annual return and the CP259 follows. If the business had no employees or activity that period, you can say so — but silence lets the IRS create its own version of events.

The stakes are bigger than they look: unfiled 941s block every resolution option, late-filing penalties on 1120s and 1065s accrue per-partner or per-month, and continued nonfiling can lead the IRS to prepare a substitute return with none of your deductions.

How to recognize a real CP259

The IRS business return-delinquency program sends the CP259 as the first notice when an EIN's filing requirements show a return due, such as a quarterly Form 941, but no return has posted for that period.

The heading reads "Message about your [period] Form [941, 1120, 1065, etc.]" and "You didn't file a Form [number] tax return."
The header box shows "Notice CP259," the tax period, the notice date, your Employer ID number, phone and fax numbers, and a select code.
It includes a "Response form for Form [number]" with checkboxes for: already filed (with the name and EIN used, and whether that EIN differs from the notice), filing late, and not required to file. The reasons listed include business ceased operations, no employees this period, no employees going forward with the last date wages were paid, and wages reported on Form 943/944.
The Response form also has a section to apply an existing credit or deposit to another form and period, or to ask for it as a refund. It notes that you must file a return to apply or refund a credit.
The response form is signed under penalties of perjury, with signature, title, and date lines.

What to do, step by step

1Identify the exact form and period the notice names.
2If the return was required, file it now — even unpayable balances are better filed than not (failure-to-file penalties dwarf failure-to-pay).
3If no return was due (no employees that quarter, business closed, dissolved entity), check the box on the response form and explain — and formally close the account if the business ended.
4If several periods are missing, get help reconstructing them — payroll and income transcripts can rebuild the numbers.
5If a balance results, set up a business installment agreement before penalties compound.

Illustrative example

Example: A CP259 for a quarter with no employees

Illustrative scenario: Renee owns a bakery that let its last employee go in June 2025 and has run with just the owners since. In February 2026 she gets a CP259 saying no Form 941 was filed for the quarter ending December 31, 2025.

No wages were paid that quarter, but Renee never told the IRS her payroll had stopped, so the account still expected quarterly 941s. On the Response form she checks "My business no longer has any employees and doesn't expect to pay wages in the future," enters June 27, 2025 as the last date wages were paid, signs it with her title, and faxes it to the number on the notice.

That closes out the period and stops the IRS from expecting future quarterly 941s. If she had paid even one small paycheck that quarter, the right answer would have been to file the 941 itself with the Response form and explain the late filing.

Names and numbers are made up to show how this notice typically plays out.

Mistakes that make a CP259 worse

Ignoring the notice because the business had no activity. The IRS says you still have to respond and explain why no return was due.
Not stating the last date wages were paid when payroll has ended. Without it, the IRS keeps expecting quarterly returns and sends more CP259s.
Filing under a different EIN without saying so. The Response form asks whether the EIN on your filed return differs from the one on the notice, and a mismatch is a common cause of these notices.
Expecting a credit or refund without a return. The form notes that a return must be filed to carry a credit forward or get it refunded.
Replying again for a return filed recently. The IRS says to disregard the notice if you filed in the last few weeks under the same name and EIN.

What happens if you ignore a CP259

The notice warns that the IRS may file a substitute return for you and charge penalties and interest on the tax it calculates. According to the IRS manual, if the first notice isn't resolved within about 10 weeks, a final notice (CP518) is sent. If that goes unresolved, the case moves to collection enforcement, which can mean automated collection, a revenue officer, or an IRS-prepared return under section 6020(b) for employment tax forms.

Common questions

What if my business had no activity — do I still file?+

For Form 941, if you had no employees you can mark the response form accordingly or file a final 941 to close the filing requirement. Corporations and partnerships generally must file annually while the entity exists, even with zero activity.

What happens if I ignore a CP259?+

Penalties keep accruing, the IRS may prepare a substitute return without your deductions, and for payroll periods the account escalates toward collection — which for withheld payroll taxes can reach owners personally through the Trust Fund Recovery Penalty.

Checked against IRS primary sources — see how we source these guides. You can verify any notice directly at IRS.gov. The dates and instructions printed on your specific notice always control. Official IRS explanation: Understanding your CP259 notice (IRS).

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