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IRS Notice Response Letter Template
A response letter for your IRS notice: the deadline as a calendar date, an answer to each change, and the proof to enclose.
Free to start · Opens in your River workspace, ready to edit and share
How to respond to an IRS notice
To respond to an IRS notice, find the notice number and the date printed on it. The number tells you what the IRS wants, and the date starts your clock. Check each change against your own records. Then reply by the deadline, on the response form if there is one. Say which changes you accept and which you dispute, and enclose copies of the documents behind each dispute.
Read the date before the amount. Many IRS deadlines only move your case on to the next, sterner letter. A few end a right for good, such as the chance to dispute a notice of deficiency in the Tax Court before you pay.
Identify the notice you have
Every IRS notice carries a number, such as CP2000 or LT11, which the IRS says you'll find on the right corner1 of the letter. Search it on IRS.gov to see what the notice means, then write down:
- The notice number and the date printed on it
- The tax year it covers
- Each change it lists, with the tax, penalty and interest
- The reply-by date, and the ways it lets you reply
If you agree, take any action the notice asks for, such as paying. The IRS says you don't need to reply1 unless it asks. If a letter doesn't turn up in that search or looks suspicious, call the IRS at 800-829-1040 to check it.
State tax notices follow their own deadlines and appeal routes, covered in a separate guide to responding to a state tax notice.
Know what kind of deadline you face
Count from the date printed on the notice, not the day you opened it. Then check what missing it costs: a harsher next step, or a right you can't get back.
Five common IRS notices and their deadlines
| Notice | What it is | Time to act | If you miss it |
|---|---|---|---|
| CP2000 | A proposal, not a bill: what payers reported doesn't match your return | 30 days from the notice date2, or 60 if you live abroad | A notice of deficiency follows |
| Notice of deficiency (CP3219A) | The formal notice of extra tax, with Tax Court rights | 90 days to petition the Tax Court3, or 150 if addressed abroad | The tax is assessed and billed; a late petition can't be heard |
| CP11 | The IRS corrected a mistake on your return, and you owe more | 60 days3 to ask for the change to be reversed | No automatic reversal, and no route to the Tax Court |
| CP504 | A notice of intent to levy for an unpaid balance | Pay now, or call about a payment plan or an appeal | The IRS can take your state tax refund, then pursue other assets |
| LT11 or Letter 1058 | A levy notice that gives you the right to a hearing | 30 days4 to request a Collection Due Process hearing | You lose the hearing whose result you can take to the Tax Court |
The two levy notices are easy to confuse. After a CP504, the IRS can take your state tax refund and may then send the notice that gives you a hearing5, an LT11 or Letter 1058. At that hearing, you can propose a payment plan or challenge the levy. You can dispute the tax itself only if you never received a notice of deficiency or another chance to dispute it4.
Talking to the IRS doesn't stop the clock
The IRS will keep working with you during the 90 days after a notice of deficiency, but that won't extend your time to petition the Tax Court6. Mark the petition deadline on your calendar.
Check each change against your records
A CP2000 comes from automated matching of payers' forms against your return. It lists each payer, the form it filed and the amount2 beside what you reported. Pull your filed return and sort each item into one of these groups:
- Already on your return, on another line or form: show where it is
- Reported wrongly or twice by the payer: ask the payer for a corrected form or a letter6
- Not yours, because someone used your Social Security number: report identity theft
- Genuinely missed: accept it
For anything you dispute, the strongest enclosure is usually a short reconciliation. Two documents showing similar figures don't prove they are the same money. A reconciliation that ties the payer's total to your return, payment by payment, does.
If the proof sits in your bank deposits, convert the statements with a bank statement PDF to Excel converter and tick off each payout against the payer's monthly totals.
Write your IRS notice response letter
Use the response form if the notice has one. On a CP2000 form you mark whether you agree, and for any change you dispute, you add a signed statement explaining why2, with the documents you want considered.
Open the statement with a reference line: your name, the notice number and date, the tax year and the ID number the notice shows. Then give each item its own numbered paragraph with the amount, your position and the enclosure that proves it.
Re: Notice CP2000 dated March 2, 2026, tax year 2024. Jordan Lee, SSN ending 0000.
1. Form 1099-NEC from Harbor Design, $6,400. I disagree. Harbor paid by card, so this money is already in my processor's $18,400 Form 1099-K, which matches my Schedule C gross receipts. Enclosure 1 traces Harbor's six payments through the processor's statements.
2. Form 1099-INT from Coastal Bank, $640. I agree.
Please remove item 1, recompute the tax on item 2 alone, and confirm the result in writing.
- Proves the double count. Card payments belong on Form 1099-K only. The enclosure proves both forms report the same money.
- Accepts the real miss. Conceding the interest leaves the reviewer one question to decide.
Enclose copies, labeled to match your paragraphs, and keep the letter to a page when the facts allow. The IRS says to never send original documents7.
Send it, keep proof and follow up
Reply the way the notice offers: a CP2000 can be answered through the IRS Document Upload Tool, by fax or by mail. If you mail it, use certified mail with a return receipt to prove when you sent it and that it arrived.
Keep a full copy, then allow at least 30 days7 for an answer. Log each notice with its deadline, what you sent, how and when, and a date to check back.
If the same gap shows up in another year, the IRS says to file an amended return for that year2 to limit penalties. Add copies of the notice and your reply to next year's tax package for your CPA.
Before you send your response
- The notice number, date and tax year head every page
- The response form, if there is one, is signed and dated (by both spouses on a joint return)
- Each disputed item has its own paragraph and enclosure
- Copies only, labeled, with a full set kept for you
- You can prove the date you sent it
If you can't pay or need help
If you can't pay in full, pay what you can by the due date, which the IRS says can reduce interest and penalty charges1. Then apply for a payment plan; the IRS calls its online tool the fastest way to get one approved5.
The Taxpayer Advocate Service, an independent office inside the IRS, can help for free when a tax problem causes financial hardship or the usual process has failed. Form 2848 lets a CPA, enrolled agent or attorney represent you before the IRS.
When to bring in a professional
Have a CPA, enrolled agent or tax attorney review your reply well before the deadline if it answers a notice of deficiency or levy notice, or the amount is large. This guide is general information about US federal notices, not tax or legal advice.
For a first draft, add the notice to the tool at the top of this page. It reads the dates and drafts a reply in this shape for you to check and sign.
How it works
Start by pasting the notice or adding a photo of every page, with a line on what looks wrong and the records you have. River reads the notice number, date, tax year and amounts off the page. It checks the IRS's own page for that notice, then turns the deadline into a calendar date and says what you lose if it passes.
Then it drafts the letter in your workspace, one numbered paragraph per item, with the enclosures listed and a log entry to follow up. It concedes what your records show is right, flags any document you still need and never sends anything for you. When a Tax Court petition or a collection hearing is at stake, it says to have a CPA, enrolled agent or tax attorney review it first.
Add the notice
Paste it or add a photo of every page, plus what looks wrong and the records you have.
River reads the notice
It identifies the notice by number, checks the IRS's page for it and turns the deadline into a date.
Get your response
A short letter answering each item, a numbered list of enclosures and a log entry with a follow-up date.
Review, sign and send
Edit anything, ask River for changes, then sign it and send it the way the notice asks.
What you get
- The notice's number, date, tax year and amounts read back to you, even from a phone photo
- The deadline as a calendar date, and whether missing it escalates the case or ends a right
- A letter that makes the argument this type of notice accepts, not a general disagreement
- One numbered paragraph per item, conceding what's correct and disputing the rest with its proof
- A numbered list of what to enclose, with missing records flagged and what each would prove
- A log entry for each notice, with what you sent, how, and the date to check back
Common questions
How long do I have to respond to an IRS notice?
It depends on the type of notice, and you count from the date printed on it. A CP2000 asks for a reply within 30 days, or 60 if you live abroad. A math-error notice allows 60 days to ask for a reversal. A levy notice with hearing rights allows 30 days to request the hearing, and a notice of deficiency allows 90 days to petition the Tax Court.
Can I get more time to respond to an IRS notice?
Sometimes. For a CP2000, you can ask for more time through the same upload, fax or mail options as a reply, ideally before the date passes. A notice of deficiency is different. The IRS says it can't extend the 90 days to petition the Tax Court, and working with you in that time doesn't pause the clock.
What happens if I ignore an IRS notice?
Each unanswered notice is followed by a stronger one, and options fall away as it goes. An ignored CP2000 leads to a notice of deficiency, then an assessment and a bill. An unpaid bill brings collection notices, a possible federal tax lien and, after a notice of your right to a hearing, a levy on wages, bank accounts or other property.
What if I agree with the notice but can't pay?
Reply as the notice asks, pay what you can by the due date and apply for a payment plan for the rest. Interest keeps running on what's unpaid. A late-payment penalty may be removed if your three prior years show timely compliance, or for a good reason such as serious illness. Being short of money isn't enough on its own.
Should I call the IRS or reply in writing?
Do what the notice asks. The IRS says most notices can be handled without calling, and it calls the phone the fastest way to resolve many return errors, such as those on a CP11. If you call, note the date and what was agreed. If you reply in writing, use the method the notice offers and keep a copy.
How do I write an IRS notice response with River?
Paste the notice into the box at the top of this page or add a photo of every page, then say what looks wrong and which records you have. River identifies the notice and turns the deadline into a date. It drafts the letter, enclosure list and log entry in your free River workspace, ready for you to check, sign and send.
Is the IRS notice response letter template free?
Yes, it is free to start. Your response letter opens in a River workspace, where you can edit it, share it with your accountant or ask River to change it. Paid plans add more AI use and access to the most advanced models.
Sources
IRS. “Understanding your IRS notice or letter.” irs.gov (opens in a new tab)
IRS. “Topic no. 652, Notice of underreported income – CP2000.” irs.gov (opens in a new tab)
U.S. Code. “26 U.S.C. § 6213: Restrictions applicable to deficiencies; petition to Tax Court.” uscode.house.gov (opens in a new tab)
U.S. Code. “26 U.S.C. § 6330: Notice and opportunity for hearing before levy.” uscode.house.gov (opens in a new tab)
IRS. “Understanding your CP504 notice.” irs.gov (opens in a new tab)
IRS. “Understanding your CP3219A notice.” irs.gov (opens in a new tab)
IRS. “Topic no. 651, Notices – what to do.” irs.gov (opens in a new tab)
Built by
Chandler Supple
Co-founder & CEO, River
Chandler has spent the last six years working in AI, building tools for millions of users and Fortune 100 companies. In 2025, he co-founded River to build a new kind of operating system for AI agents.