IRS notices

Got a letter from the IRS? Find out what it means.

Look up your notice to see what it means, how urgent it is, and what to do next.

Where to look

Your notice code is in the top right corner.

It starts with CP, LT or LTR, followed by numbers. You'll also see the tax year and the notice date there. The date matters, because most deadlines count from it.

  1. 1Notice code. Tells you which letter this is.
  2. 2Amount. What the IRS says you owe or proposes to change.
  3. 3Deadline. When you need to pay, respond or request a hearing.
Page 1 of an official IRS sample CP14 notice123

Official IRS sample. Names and amounts are examples.View the full sample on irs.gov

Look up your notice

Type the code from the top right corner of your letter.

Common notices:

Browse notices

Common IRS notices and what they mean

Severity: Low Moderate High Critical

Received an IRS notice?

IRS notices are letters or documents sent by the IRS to inform you of tax-related issues, such as unpaid balances, filing errors, audits, or impending collection actions. They range from simple reminders to urgent warnings, requiring careful review and timely action to avoid penalties or escalated measures.

Why are IRS notices a concern?

Ignoring or mishandling IRS notices can lead to serious consequences:

  • Penalties and interest accrue on unpaid taxes or late filings.
  • The IRS may escalate to collections, including wage garnishments, bank levies, or property liens.
  • Errors in responding can delay resolution or increase your liability.
  • Failure to act within deadlines can result in audits or legal action.

Prompt and accurate responses are essential to address the underlying issue and prevent further complications.

Common types of IRS notices

IRS notices vary, but some frequent types include:

  • CP14: You have a balance due
  • CP501: Reminder: you still have a balance
  • CP504: Notice of intent to levy
  • CP2000: Your income doesn’t match IRS records
  • LT11 / 1058: Final notice of intent to levy
  • CP90: Final notice, including Social Security
  • CP3219A: Notice of deficiency (90-day letter)

Each notice has its own deadline and requirements. Don’t see yours? Look it up in our notice finder or book a free consultation and we’ll tell you what it means.

Options for responding to IRS notices

You can address IRS notices in several ways:

  • Do it yourselfReview the notice, gather financial records, and respond directly to the IRS, meeting deadlines and providing requested documentation. This requires understanding the notice type, IRS criteria, and proper forms. Errors or delays can worsen the situation or lead to penalties.
  • Work with the IRS directlyContact the IRS by phone or mail, supplying details to clarify or resolve the issue. This demands precise preparation and knowledge of IRS policies, which can be challenging without expertise.
  • Hire a tax professional (recommended)A professional is the best way to respond to IRS notices. They analyze the notice, submit accurate responses or forms, and negotiate with the IRS to resolve the issue. If your tax issue involves penalties, back taxes, or collections, a professional can also explore programs like payment plans or settlements to address the root cause.
Get peace of mind

Pre-qualify for a fresh start in about a minute.

Answer a few questions

A few quick questions online, then a tax professional calls you with your options.

Talk to a person

Call our team now, or book a free consultation at a time that suits you.

(833) 899-0099

Cookie settings

Choose which cookies we can use. You can change this any time from "Cookie settings" at the bottom of every page.

Strictly necessary

Keep the site secure and working, including forms and your saved choices.

Always on

Analytics

Help us understand which pages are useful so we can improve the site.

Website analytics

Advertising

Measure our ads and show relevant ads on other sites. Turning this off also opts you out of the "sharing" of data for advertising under California law.

Meta pixel
What waiting costs

IRS penalty and interest calculator

What's your situation?
Your balance
Tax owed$10,000
Penalties & interest$1,345
Total you'd owe today$11,345
Failure to file$0
Failure to pay$600
Interest$745

Estimate only, not tax advice. Federal tax and penalties at the IRS's standard rates, before credits and state taxes. Unfiled-year tax uses 2025 brackets and assumes W-2 income had taxes withheld. Interest uses the IRS rate of 7% a year (October to December 2026), compounded daily; the rate resets every quarter.

Question 1 of 8About 1 minute
Tell us a little more about your tax issues.

Pick the one that fits best.

Free and confidential. No payment method or account required.