IRS LETTER 2645C
Interim Reply — More Time Needed
Quick answer
The IRS is telling you it received something you sent and needs more time before it can give you a real answer. It is an acknowledgement, not a problem.
What is an IRS Letter 2645C notice?
The IRS is telling you it received something you sent and needs more time before it can give you a real answer. It is an acknowledgement, not a problem.
A Letter 2645C is usually an informational notice that may not require any action. For the IRS's own overview of notices and letters, see the official Understanding Your IRS Notice or Letter page on IRS.gov.
What does a Letter 2645C look like?
A genuine Letter 2645C is a paper notice with the notice number "Letter 2645C" printed in the upper-right corner, the tax year it concerns, a short plain summary of the issue, the amount involved (if any), and a section explaining how and by when to respond.
When reading a Letter 2645C, it helps to locate four things: the notice code (so you know which notice it is), the tax year it applies to, any dollar amount, and the response or payment date. Those four details tell you most of what the notice is about.
Why did the IRS send a Letter 2645C?
The IRS could not resolve your correspondence within the 30 days its own policy allows, so it sent an interim reply while the case stays open.
Is a Letter 2645C real, or a scam?
Scam letters sometimes imitate IRS notices. A real Letter 2645C arrives by mail, shows an official notice number, and never demands payment by gift card, wire, or cryptocurrency, and never threatens immediate arrest.
- • The IRS generally makes first contact about a notice by mail, not unsolicited email, text, or a phone call.
- • Real notices reference a specific tax year and a notice number like Letter 2645C.
- • The IRS does not demand gift cards, wire transfers, or crypto, and does not threaten immediate arrest or deportation.
- • When unsure, verify by calling the IRS directly at 1-800-829-1040 or the number listed on IRS.gov.
How time-sensitive is a Letter 2645C?
The response date for a Letter 2645C is the date printed on the notice itself. Always go by that printed date and confirm it against your own copy — do not rely on a general estimate.
What happens if you don't respond to a Letter 2645C?
Ignoring an IRS notice generally makes the situation harder to resolve — interest and penalties can continue to build, and the IRS can send further notices or take further action. It is almost always better to review the notice and respond by the printed date.
General next steps
In general, these are some of the steps people take for this type of notice — not advice about your specific situation.
- Read the Letter 2645C in full and note the notice code (top-right corner), the tax year, and any date it lists.
- Compare the amounts and any change shown on the notice against your filed return and your own records.
- Respond only in the way the notice itself describes, and by the date printed on it.
- If you are unsure whether the notice is correct or how to respond, contact the IRS at the phone number printed on it, or a licensed tax professional — a CPA, an Enrolled Agent, or a tax attorney.
When to get help
Many notices can be reviewed and handled by reading them carefully. For serious or confusing ones, or if you are unsure, contact the IRS at the number printed on the notice, or a licensed tax professional — a CPA, an Enrolled Agent, or a tax attorney.
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Frequently asked questions about the Letter 2645C
What is an IRS Letter 2645C notice?
The IRS is telling you it received something you sent and needs more time before it can give you a real answer. It is an acknowledgement, not a problem.
Why did I receive a Letter 2645C?
The IRS could not resolve your correspondence within the 30 days its own policy allows, so it sent an interim reply while the case stays open.
What does a Letter 2645C look like?
A genuine Letter 2645C is a paper notice from the IRS with the notice number "Letter 2645C" printed in the upper-right corner, the tax year it concerns, a short summary of the issue, and a section explaining how and by when to respond.
How time-sensitive is a Letter 2645C?
The response date for a Letter 2645C is the date printed on the notice itself. Always go by that printed date and confirm it against your own copy — do not rely on a general estimate.
Is a Letter 2645C a scam?
Some scam letters imitate IRS notices. A real Letter 2645C arrives by mail, shows an official notice number, and never demands payment by gift card, wire transfer, or cryptocurrency, and never threatens immediate arrest. When in doubt, verify by calling the IRS at 1-800-829-1040.
What happens if I ignore a Letter 2645C?
Ignoring an IRS notice generally makes things harder to resolve — interest and penalties can continue to build and the IRS can send further notices or take further action. It is almost always better to review it and respond by the printed date.
Do I need a tax professional for a Letter 2645C?
Many notices can be reviewed and handled by reading them carefully and responding as instructed. For serious or confusing notices, or if you are unsure, a CPA, Enrolled Agent, or tax attorney can help. This is educational information, not advice about your situation.
How do I know a Letter 2645C is really from the IRS?
The IRS initiates contact about a notice by mail, not by unsolicited email, text, or phone. A real Letter 2645C has an official notice number and references a specific tax year. You can confirm any notice by calling the IRS directly using the number on IRS.gov.
Tax Panic provides educational information only. This is not tax or legal advice, does not interpret your legal rights, and does not tell you what to do about your specific situation. Not affiliated with the IRS. For your situation, contact the IRS at the number on your notice or a licensed tax professional.