Few things make a stomach drop faster than a letter from the IRS. Before you even open it, your mind jumps to audits, penalties, and worst-case scenarios.

Here’s the reassuring truth: most IRS letters are routine. The IRS sends millions of notices every year, and the majority deal with simple issues like a math correction, a missing form, or a balance that needs to be paid. A notice is not an audit, and it’s rarely an emergency, as long as you don’t ignore it.

This guide walks through what to do the moment a notice arrives, what the most common IRS and Pennsylvania notices mean, and when it’s time to bring in a professional.

Step 1: Make Sure It’s Real

Tax scams are everywhere, so start by confirming the letter is legitimate. A few things to know:

  • The IRS typically makes first contact by mail, not by phone, text, email, or social media.
  • The IRS will never demand immediate payment through gift cards, wire transfers, or cryptocurrency.
  • A real notice has a notice or letter number, usually in the top or bottom right corner (like CP14 or LTR 3219).

If you’re not sure, don’t call the number in the letter. Instead, log in to your IRS online account at IRS.gov, where most legitimate notices and balances are visible. For Pennsylvania, you can check correspondence and balances in myPATH.

Step 2: Read the Whole Thing, Then Find Three Details

It’s tempting to skim, but read the entire notice. Then look for three things:

  1. The notice number. This tells you exactly what kind of notice it is and what the IRS wants.
  2. The tax year. Notices often refer to returns from a year or two ago.
  3. The response deadline. This is usually bolded. Missing it can limit your options, so write it on your calendar right away.

Common IRS Notices and What They Mean

CP12: Math error correction

The IRS found an error on your return and corrected it. This can change your refund or balance up or down. If you agree, there’s usually nothing to do. If you disagree, you typically have 60 days to respond.

CP14: Balance due

This is the first notice that you owe money. It shows the amount, including any penalties and interest. You generally have 21 days to pay or respond. If you can’t pay in full, this is the time to set up a payment plan before things escalate.

CP501, CP503, and CP504: Collection reminders

These follow a CP14 when a balance goes unpaid. The CP501 is a reminder, the CP503 is a second reminder, and the CP504 is a notice of intent to levy, meaning the IRS may take your state tax refund and begin moving toward other collection action. Each notice is more serious than the last. Don’t let it get to a CP504.

CP2000: Underreported income

This is one of the most common notices, and one of the most misunderstood. The IRS matches what you reported against the W-2s, 1099s, and other forms it received from third parties. If something doesn’t match, like a forgotten 1099 from a side job or a brokerage account, the IRS sends a CP2000 proposing additional tax. It isn’t a bill yet. It’s a proposal, and you typically have about 30 days to agree or disagree. Sometimes the IRS is right. Sometimes the income was already reported elsewhere on your return, or the cost basis was missing. Review it carefully before agreeing.

LT11 or Letter 1058: Final notice of intent to levy

This is serious. It means the IRS intends to levy wages, bank accounts, or other assets. You have 30 days to request a Collection Due Process hearing, which protects important appeal rights. If you receive one of these, call a professional right away.

Letter 3219: Statutory notice of deficiency

Often called the “90-day letter.” The IRS has determined you owe additional tax, and you have 90 days to petition the U.S. Tax Court if you disagree. After that window closes, the IRS can assess the tax.

What About Pennsylvania Department of Revenue Notices?

Pennsylvania sends its own notices for the PA-40, business taxes, and sales tax. Common ones include notices of assessment for unpaid or underreported tax, requests for additional documentation, and adjustments when the state’s records don’t match yours.

A few Pennsylvania-specific points to keep in mind:

  • PA notices can be verified and often answered through myPATH.
  • If you disagree with an assessment, you can generally file a petition with the Department’s Board of Appeals. The deadline is printed on the notice and is often 90 days, so don’t let it slip.
  • Pennsylvania doesn’t follow every federal rule. A federal change can trigger a PA notice, and a PA notice doesn’t always mean there’s a federal problem.

And remember that your local Earned Income Tax collector is a separate agency. A letter from your local tax collector isn’t from the state or the IRS and should be handled on its own.

Step 3: Respond the Right Way

  • If you agree, follow the instructions and pay by the deadline to stop additional interest. If you can’t pay in full, request a payment plan instead of ignoring the notice.
  • If you disagree, respond in writing before the deadline. Include the notice number, your explanation, and copies (never originals) of supporting documents.
  • If you need more time, contact the IRS before the deadline passes to ask for it.
  • Keep copies of the notice, your response, and proof of when you sent it.

The single worst thing you can do is nothing. Unanswered notices escalate, interest keeps growing, and your appeal rights narrow with every missed deadline.

When to Call a Professional

Simple notices, like a CP12 you agree with or a small CP14 you can pay, are often manageable on your own. It’s worth getting help when:

  • You receive a CP2000 and aren’t sure whether the IRS is right
  • You get a CP504, LT11, Letter 1058, or Letter 3219
  • You owe more than you can pay
  • The notice involves business taxes, payroll taxes, or multiple years
  • You simply don’t understand what the letter is asking

Enrolled Agents are federally licensed tax practitioners with unlimited rights to represent taxpayers before the IRS, and CPAs can represent taxpayers as well. With a signed power of attorney (IRS Form 2848, or REV-677 for Pennsylvania), your representative can speak with the IRS or the Department of Revenue on your behalf, so you don’t have to.

Frequently Asked Questions

Does a letter from the IRS mean I’m being audited?

Usually not. Most IRS notices deal with routine issues like balances due, math corrections, or mismatched income reports. An audit notice will clearly say it’s an examination and will typically ask you to schedule a meeting or send specific records.

How long do I have to respond to a letter from the IRS?

It depends on the notice. A CP14 balance due notice generally gives you 21 days, a CP2000 about 30 days, a CP12 math error dispute 60 days, and a Letter 3219 90 days. The exact deadline is printed on your notice.

What is a CP2000 notice?

A CP2000 means the income or payment information the IRS received from employers, banks, or other third parties doesn’t match what’s on your return. It proposes changes and additional tax. It isn’t a bill yet, and you can agree, partially agree, or disagree with supporting documentation.

How do I know if an IRS letter is a scam?

Legitimate IRS notices come by mail, include a notice number, and never demand payment by gift card, wire transfer, or crypto. You can verify any notice by logging in to your IRS online account at IRS.gov rather than calling the number in the letter.

What happens if I ignore an IRS notice?

The issue escalates. Interest and penalties keep growing, and the IRS moves through a series of increasingly serious notices that can end in a levy on your wages, bank account, or other assets. You may also lose appeal rights tied to missed deadlines.

Why It Matters

An IRS or Pennsylvania notice is almost always solvable, especially when it’s handled early. The people who end up in real trouble are usually the ones who let the envelope sit unopened on the counter.

Cohick & Associates has helped Central Pennsylvania taxpayers respond to IRS and state notices for more than 40 years. Our team includes Enrolled Agents and CPAs who can review your notice, explain exactly what it means, and represent you if needed. Schedule a call or reach us at 717-249-5321, and bring the letter with you.