Got a Letter From the IRS? How to Respond to an IRS Notice

If you got a letter from the IRS and are wondering how to respond to an IRS notice, there are three main steps you need to follow: open it, read it carefully, and reply by the response deadline on the letter. Most IRS notices are easily fixable when you act quickly.

Whether the Internal Revenue Service is asking about a missing form on your tax return, confirming your identity, or notifying you of a balance due, the process usually starts the same way. Below, we’ll cover how the IRS contacts you, what real IRS mail looks like, and how to respond step by step.

At a glance:

Real IRS mail arrives in a government envelope and includes your name, tax year, notice number, and a response deadline.
The IRS almost always starts communication with a letter. It does not initiate contact via social media, text, or email to request payment.
Match the notice to your tax return and pull supporting documents before you reply.
If you owe, you may have payment options, including a payment plan or installment agreement.
If the notice is wrong, you can respond in writing or exercise your appeal rights.
A tax professional or CPA can help with complex notices, large tax debt, or audit-related letters.

How would the IRS contact you?

The IRS typically contacts taxpayers by mail first, so if you receive an IRS notice letter, that is usually the official starting point. This is true for most types of IRS notices, including balance-due notices, math-error letters, identity verification requests, and many tax audit-related inquiries.

The IRS may follow up by phone after sending a written notice, especially if you have not responded on time. But phone calls usually come after mail, not before. If someone claiming to be the IRS calls demanding immediate payment by gift card, cryptocurrency, or wire transfer, it’s likely a scam.

What does mail from the IRS look like?

Authentic IRS notice mail usually comes in a standard government envelope labeled with the U.S. Department of the Treasury or Internal Revenue Service. Inside, you will find an official IRS notice on IRS letterhead with:

Your name and mailing address
The tax year the notice relates to
A notice or letter number in the upper right corner (such as CP2000, CP14, or Letter 5071C)
A clear explanation of the issue
Instructions for how to respond
A response deadline
A contact phone number and mailing address for replies

If something feels off, compare the notice number to the IRS page on understanding your IRS notice or letter. If the letter doesn’t appear when you search for it on that page or otherwise looks suspicious, you can call (800) 829-1040 to talk to an IRS representative for help.

Once you determine the notice is official, call using the number on the letter itself, rather than a number from an unsolicited call or email.

I got a letter from the IRS. Should I worry?

Getting a letter from the IRS sounds scary, but many notices are routine, and the IRS sends millions of notices each year.

Common reasons for an IRS notice include:

A request to verify your identity
Reminders about unpaid taxes
A changed or corrected return
A delay in processing your return
A mismatch between your return and a W-2 or 1099
Math errors
Changes to your refund

What matters most is what the notice says and whether you agree with it. Some letters are merely informational, while others might propose changes to your return or notify you of collection actions. Make sure you read the entire notice before you pay anything or send documents.

Tax tip: See our list of common IRS notices with links to our support pages for additional help.

Understanding your IRS notice or letter

Every IRS notice has a notice number in the upper right-hand corner of page 1 that tells you what type of letter you received. That number is your roadmap. Look it up on IRS.gov to see what the IRS is asking for and what your options are.

Common IRS notice types

Notice/letter	What it means
CP2000	Proposed changes because income or payments on your return do not match IRS records.
CP14 or CP501–CP504	Balance due notices for unpaid taxes, often with interest and penalty charges.
Letter 5071C / 4883C / 5747C	Identity verification requests when the IRS needs to confirm you filed the return.
CP2000 follow-ups and audit letters	Requests for documentation supporting items on your return.
LT11 or Letter 1058	Final notices before enforced collection, such as a federal tax lien or levy.

No matter what type of notice you received, write down the notice number, tax year, and response deadline as soon as you open the letter. Missing the deadline can limit your appeal rights or lead to additional interest and penalty charges in some cases.

How to respond to IRS notices step by step

If you need to know how to respond to an IRS notice, follow these steps in order. These apply to most correspondence audits and routine notices.

1. Read the entire notice.

Don’t just skim! The letter should answer most of your questions: it explains the issue, the tax year involved, and exactly what the IRS wants from you.

Tip: Highlight or write down the response deadline and the reply address, fax number, or additional response instructions.

2. Verify the letter is legitimate.

Check the notice number on IRS.gov. Be wary of letters demanding payment by prepaid debit card or gift card, or threatening arrest — the IRS won’t threaten immediate arrest or demand payments via unusual methods. If your IRS notice contains a link, check that it includes “https” and “irs.gov.”

If you suspect you received a fraudulent letter, see IRS identity theft guidance for what to do next and how to protect your identity from scammers.

Tip: First contact from the IRS usually comes by mail. The IRS will not reach out to you via social media or text message.

3. Compare the notice to your tax return.

If a letter concerns a changed or corrected return, pull the original federal tax return for the tax year listed on the notice. If you filed with TaxAct®, sign in to access your current or prior-year returns. Match the income, deductions, and payments the IRS is questioning to what you reported.

Tip: If you can’t find your prior year return(s), you can request a copy of previous tax returns by creating or signing into your IRS account, requesting a transcript by mail or phone, or requesting a copy of your return from the IRS by mail for a fee.

4. Gather your tax records.

Collect all your income documents, including W-2s, 1099s, receipts, bank statements, canceled checks, and any other documents that support your position. Good records are usually the fastest way to resolve an IRS notice.

Tip: Check out our guide on how long to keep tax records for tips on staying organized year-round.

5. If the IRS is requesting a reply, decide whether you agree or disagree.

Some IRS letters include a response form. If you got one, fill it out, sign it, and indicate whether you agree or disagree with the notice.

If you agree with the IRS, simply follow the payment or response instructions. If you disagree, you will need to prepare a written explanation with supporting documents and send it to the address listed in the notice.

If you’d like to appeal a balance due notice, you can request a collection due process hearing (there should be instructions on how to do so in your IRS notice). See the IRS’s Collection due process (CDP) FAQ page for more information.

Tip: Not all IRS notices require a response unless the letter specifically requests one. Usually, you only need to respond if you don’t agree with the information, the IRS requested more information, or you have a balance due.

6. Respond by the deadline.

Send your reply to the address on the notice (not your local IRS office, unless instructed). Keep copies of everything you mail and put them with your tax records. If you need more time to respond, call the number on the letter before the response deadline passes.

Depending on the notice, you may reply digitally (the fastest option), by fax, or by mail — just follow the instructions in your notice.

Tip: If preferred, you can fill out Form 2848, which authorizes another person (like a CPA or tax attorney) to represent you before the IRS. See our guide to power of attorney for tax matters for more details.

7. Follow up if needed.

Allow up to several weeks for the IRS to process your response. Depending on the notice and how you sent your response, you may be able to check the status in your IRS online account or track your physical envelope via USPS (if you used certified mail).

Tip: If you do not hear back or the issue is not resolved, call the IRS at the number listed on your letter or consider asking a tax professional for help. Some notices may ask you to wait 60 days before calling.

Example: Responding to a CP2000 notice

Say you filed your 2025 tax return reporting $45,000 in wages. A month later, you receive a CP2000 notice proposing additional tax because a 1099-NEC for freelance work was not accounted for on your return.

Scenario 1: You agree with the notice (or amend your return).

You pull your records and confirm you did earn that income, but forgot to report it. You have two options:

Agree with the changes and pay the proposed balance due.
Amend your return with Form 1040-X to report the income yourself and recalculate your tax.
1. Make sure to write “CP2000” at the top of Form 1040-X.
1. Submit the amended return with your notice response form.

Either way, you should respond before the deadline listed on the IRS letter to preserve your appeal rights and limit any extra interest you might owe.

Scenario 2: You disagree with the notice.

Now, let’s say the notice was wrong — maybe you had already reported the income on a Schedule C, but the IRS matched it incorrectly. In this case, you would reply in writing, attaching a copy of your Schedule C and Form 1099-NEC.

Don’t just assume the IRS is right without double-checking! Mistakes happen, and that is why comparing the notice to your actual return matters.

How to address a letter to the IRS

When you reply by mail, use the exact mailing address printed on your notice. Do not send your response to a generic IRS address you find online unless it matches your letter.

For detailed info on how to address your letter, see the IRS addressing requirements.

Include these items in your reply:

A copy of the IRS notice (there may be a tear-off portion at the bottom)
Your full name, Social Security number, and current address
The tax year and notice number
A clear, dated letter explaining your response and whether you agree or disagree
Copies of supporting documents (don’t send originals unless instructed)
If you need more time, state this in writing before the deadline listed in the original notice

Sign your letter (and also have your spouse sign it if it’s for a joint return). If someone else is responding on your behalf, include a completed Form 2848, Power of Attorney, so the IRS can discuss your account with your representative.

Tax tip: You can also use the IRS Document Upload Tool to respond to an IRS notice or letter. You may need an access code (found in the notice) or the notice number.

What if the IRS says you owe money?

A balance due notice means the IRS believes you have tax liability you have not paid in full. That can happen because of underreported income, disallowed deductions, or penalties added to unpaid taxes. Before you pay, confirm the amount is correct.

Balance due payment options

If you owe and cannot pay in full, you still have payment options. The IRS offers monthly payment plans (also called an installment agreement) and, in limited cases, an offer in compromise to settle tax debt for less than the full amount. See our article on what happens if you can’t pay your taxes for a deeper look at each option.

Interest and penalty charges continue to accrue on unpaid balances, so responding early can save you money. Learn more in our guide to IRS penalties and interest.

When to amend your return

Sometimes the fastest fix is to amend your return. If you forgot to report income, missed a deduction, or made another error on your original filing, Form 1040-X lets you correct a prior-year federal tax return.

You can file an amended return even while responding to an IRS notice. In some cases, the amendment can resolve the issue before the IRS makes final changes.

Tax tip: See our guide on how to file an amended return.

Identity verification notices

If the IRS sends a letter asking you to verify your identity, it usually means someone may have used your information to file a fraudulent return, or the IRS needs extra confirmation before processing your refund.

Follow the instructions in the letter exactly. You may need to verify online, by phone, or in person at a Taxpayer Assistance Center. Do not ignore an identity verification notice, or your refund could be delayed until the IRS confirms your identity. For prevention tips, read our tax filing security tips.

Your appeal rights and collection actions

If you disagree with an IRS decision, you generally have appeal rights. Many notices include instructions for requesting an appeal or a conference with the IRS Office of Appeals, but make sure to do so before the deadline listed in the IRS letter.

If you ignore balance-due notices, the IRS can take collection actions, including filing a federal tax lien, levying bank accounts or wages, or offsetting future refunds. Responding before a final notice can prevent escalation.

Tax tip: If you feel the IRS is not resolving your issue fairly or you are experiencing economic hardship, the Taxpayer Advocate Service is an independent organization within the IRS that may be able to help. Visit TaxpayerAdvocate.irs.gov to see if you qualify.

When to call a tax professional or CPA

Many IRS notices are straightforward enough to handle on your own, especially when the fix is a missing form or a simple payment. But a tax professional or CPA can be worth the cost when:

The proposed tax debt is large or spans multiple tax years.
The notice involves a tax audit or complex business income.
You disagree with the IRS and need to prepare an appeal.
You owe more than you can pay and need help negotiating payment options.
You are not sure whether to pay, protest, or amend your return.

FAQs

What should I do if I get a letter from the IRS?

Open it immediately and note the notice number, tax year, and response deadline. Compare the letter to your tax return and gather supporting tax records if necessary. Respond by the deadline using the instructions on the notice, even if you only need to request more time.

How do I respond to an IRS notice if I agree with it?

Follow the payment or response instructions on the notice. For balance due notices, you may be able to pay online, by phone, or by mail. Be sure to include a copy of the notice with your payment or signed response form.

How do I respond to an IRS notice if I disagree?

Send a written response to the address on the letter explaining why you disagree, and include copies of documents that support your position (do not send originals unless the notice specifically asks for them). Respond before the response deadline to protect your appeal rights.

How would the IRS contact you about unpaid taxes?

The IRS usually sends a series of balance due notices by mail before taking collection actions. Phone contact typically only happens after written notice, and the IRS does not demand immediate payment via text, email, or social media.

Can I set up a payment plan after receiving an IRS notice?

Yes, if your notice shows a balance due, you may qualify for a short-term payment plan or a monthly installment agreement, depending on how much you owe. To do so, you can apply online at irs.gov, follow the instructions on your notice, or even set up a payment plan through TaxAct.

What does a certified letter from the IRS mean?

A certified letter from the IRS is still official IRS mail, usually sent when the notice is time-sensitive or requires proof of delivery. Treat it like any other IRS notice — open it promptly, note the notice number and response deadline, and follow the instructions inside. A certified letter does not automatically mean you’re being audited or facing collection.

Should I amend my return or just reply to the notice?

If the IRS is correct and you made an error on your original return, filing Form 1040-X may be the cleanest fix. But if the IRS is wrong, a written response with documentation is often enough. If you’re unsure how to send a disagreement or what supporting documents to include, a tax professional can help you through the process.

How do I respond to an IRS notice CP2000?

Read the notice, compare the proposed income to your tax return and 1099s, then respond by the deadline. If you agree with the notice, follow the payment instructions or sign and return the response form. If you disagree, send a written reply with copies of your return and any other supporting documents.

What if I lost my tax records?

You can request wage and income transcripts from the IRS, contact employers or payers for duplicate W-2s and 1099s, and check bank or credit card statements for deductible expenses. Going forward, ensure you keep digital copies of receipts and tax documents organized and in one place to save you stress down the road.

The bottom line

The best response to an IRS letter starts long before the envelope arrives. When you file an accurate tax return with complete income and supporting records, many notices never show up at all. But if you do get an IRS notice, read it carefully, identify the notice number and tax year, gather your tax records, and make sure to respond by the response deadline. If the situation feels bigger than a simple fix, a tax professional can help you navigate appeal rights, tax debt, and collection actions with less stress.

When you’re ready to file or need to pull a prior return, TaxAct is here to help you get it right. Explore TaxAct filing options and let us help you keep your tax records organized so you’re ready if another IRS notice arrives.

This article is for informational purposes only and not legal or financial advice.

All TaxAct offers, products and services are subject to applicable terms and conditions.

Citations

How to Respond to IRS Letters Step-By-Step