Opening the mailbox to a letter from the IRS can make your stomach drop. Take a breath. Knowing what to do if you receive an IRS notice turns a stressful moment into a clear set of steps. Many IRS notices can be resolved by carefully following their instructions. However, the required action and deadline depend on the notice you received. This guide walks you through it.
First, do not panic. Read the notice.
The IRS sends millions of notices every year. Many are routine. A notice might say you have a balance due, that a number on your return did not match their records, or that your refund is delayed. Some notices may show that your refund or account credit has increased.
So before anything else, read the whole notice slowly. Look for the CP or LTR number in the right corner of the notice or letter. You can look it up on the IRS Understanding Your IRS Notice or Letter page. That number helps you identify the notice and find its official IRS instructions.
As you read, note two things: what the IRS is asking for, and the date you need to respond by. Those two facts drive everything else.

Common types of IRS notices
Here are some of the notices people see most often. Yours may differ, so always check your own notice number and its instructions.

| Notice | What it usually means | Typical next step |
|---|---|---|
| CP14 | Your initial balance-due notice. | Pay or set up a plan by the due date. |
| CP501 | A reminder that you still owe a balance. | Respond and arrange payment. |
| CP503 | A further reminder that a balance is still unpaid. | Respond promptly to avoid escalation. |
| CP2000 | Income reported to the IRS did not match your return. This is a proposal, not a bill. | Agree, or disagree with proof, by the date on the notice. |
| CP05 | The IRS needs more time to verify information on your return. | If you filed the return, no immediate action is usually required. If you did not file it, follow the identity-theft instructions immediately. |
| CP504 | Final balance-due notice and intent to levy your state tax refund or other property. | Act quickly. Pay or contact the IRS. |
| LT11 / Letter 1058 | Final notice of intent to levy, with your right to a hearing. | Respond by the stated deadline to protect hearing rights. |
The CP2000 is one of the most common and most misread. It is not a bill and not an audit. It simply means the income on your return did not match forms like a W-2 or 1099. You can agree, or you can disagree and send proof.
Find your response deadline
Every notice that needs a reply gives you a deadline. Response periods vary by notice. Use the exact deadline printed on your letter, and check whether it is measured from the notice date. Do not rely on a general 30-day rule.
Deadlines matter more than people realize. If a notice is a final notice of intent to levy, such as an LT11 or Letter 1058, you generally have a set period to request a Collection Due Process hearing. Miss that window and you can lose the right to that hearing. Responding on time protects your options, even when you disagree with the notice.
If you need more time to gather documents, call the phone number printed on the notice before the deadline and ask what your options are. It is far better to reach out early than to let the date pass in silence.

What Not to Do
A few common reactions make things worse. Avoid these:
- Do not ignore it. The problem does not go away, and deadlines pass quickly.
- Do not panic and pay a balance you have not checked. Notices can be wrong. Verify first.
- Do not assume the notice is correct just because it came from the IRS. Compare it to your own records.
- Do not fall for scams. The IRS starts contact by mail, not by a threatening phone call, text, or email demanding instant payment. When in doubt, check the IRS tax scams and consumer alerts page.
- Do not throw the notice away. Keep it, and keep a copy of anything you send back.

How to respond the right way
Once you understand the notice, follow its specific response instructions carefully.
Start by comparing the notice to your tax return and your records. If you agree, follow the instructions to pay or to accept the change. You can also review your account details in your IRS online account. If you cannot pay in full, you can ask for a payment plan.
If you disagree, follow the response instructions printed on your notice. Depending on the notice, you may be able to upload documents, fax them, mail them, or call the IRS. Include copies, never originals, of any documents that support your case, and explain clearly and briefly why you disagree. Keep copies of everything you submit and save proof of delivery. If you respond by mail, consider using a trackable delivery method and keep the receipt.
You have rights in this process. The Taxpayer Bill of Rights includes the right to be informed, the right to challenge the IRS position, and the right to appeal.

When to get professional representation
You can handle a simple notice on your own. But some situations call for a professional. Consider getting help when:
- The balance is large, or you cannot pay it.
- The notice is an audit, a levy, or a lien.
- You disagree and need to appeal.
- The notice is confusing or involves a business return.
You can authorize an eligible CPA, enrolled agent, or tax attorney to represent you by completing and submitting Form 2848, Power of Attorney and Declaration of Representative. Form 2848 authorizes that person to represent you before the IRS for the matters you specify. If you have tried to resolve an issue and cannot, the Taxpayer Advocate Service is an independent office inside the IRS that may be able to help.
If the notice is about years you never filed, start with our guide on how to file back taxes.
Common questions about IRS notices

Can I ignore an IRS notice if I think it is wrong?
No. Even if you believe the notice is wrong, respond by the deadline and explain your position with proof. Ignoring it lets the IRS move forward with its proposed changes or collection, and you may lose the right to challenge them.
How can I confirm an IRS letter is real?
A real IRS notice has a CP or LTR number and usually references a specific tax year and issue. The IRS starts contact by mail. It does not demand instant payment by phone, text, gift card, or email. You can verify a notice by logging into your IRS online account or by calling a number listed on the official IRS website, not a number from a suspicious message.
What should I do if I already missed the response deadline?
Act right away. Contact the IRS using the number on the notice and respond as soon as you can. You may still have options, but they narrow after the deadline. If a levy or lien is involved, consider getting professional help immediately.
How Tax by Lonestar helps with IRS notices
You do not have to face the IRS alone. Our team in Allen, TX reviews your notice, explains the issue in plain language, helps organize the required documents, and guides you through the response process. Learn more about our tax preparation services and tax resolution help.
We check whether the notice is correct and help you gather the right documents so you can respond before the deadline. If a balance is due, we explain the available payment and resolution options. The goal is simple. We take the stress off your plate and help you protect your options.
Got a notice you are not sure about? Bring it to us before the deadline.