Got an IRS Letter? Don’t Panic — But Don’t Ignore It
Seeing an envelope from the IRS can make anyone nervous. But receiving an IRS letter does not automatically mean you are being audited, and it does not automatically mean the IRS is correct.
The IRS sends notices and letters for many different reasons. It may be a simple correction, an income mismatch, an identity-verification request, an audit, an unfiled tax return, a balance due, or a warning about possible collection action.
The most important question is:
What notice did you receive, what does the IRS want, and how much time do you have to respond?
Some IRS notices are relatively simple to resolve. Others come with important deadlines that can affect your appeal rights, Tax Court rights, or IRS collection actions.
Start Here: Read the Entire Letter
Before you pay anything or call the IRS, look for:
Notice or letter number — for example, CP2000, CP504, LT11, or Letter 5071C
Tax year or period
What the IRS says happened
What the IRS wants you to do
Deadline to respond
Then compare the notice with your tax return and records.
Do not assume that an amount printed on an IRS notice is automatically correct.
Sometimes the IRS is correct. Sometimes it is working with incomplete information. Sometimes a payment or tax document was reported incorrectly. The first step is understanding exactly what happened.
General IRS information about notices and letters:
1. Correction Notices: Sometimes It Really Is a Simple Error
Not every IRS notice is an audit.
Sometimes the IRS identifies a relatively simple problem, such as a math or clerical error, incorrect taxpayer information, a filing-status issue, a dependent problem, or an issue with a tax credit.
If you receive this type of notice, compare the IRS change with the tax return you actually filed.
If you disagree with certain IRS math-error adjustments, you generally have 60 days after the notice is sent to request that the assessment be reversed. Different procedures can apply depending on the type of adjustment, so read the specific notice carefully.
Client tip: Don’t pay simply because a notice shows a balance. First understand what the IRS changed and whether the change is correct.
2. CP2000: The IRS Found Something That Doesn’t Match
A CP2000 is common when information reported to the IRS by an employer, bank, brokerage firm, or another third party doesn’t match what appeared on your tax return.
For example, the IRS may believe that you failed to report:
A W-2
A 1099
Interest or dividends
Investment transactions
Other income reported under your Social Security number
But that does not automatically mean you owe the additional tax proposed by the IRS.
A CP2000 is not a bill. It is a proposed change. According to the IRS, the proposed change could increase your tax, decrease your tax, or result in no change. (IRS)
There may be a perfectly valid explanation. Income may already have been reported somewhere else on the return. A stock transaction may be missing cost basis. A third-party tax document may be incorrect. Or the IRS may simply not have all the information necessary to calculate the correct tax.
Before agreeing, compare the notice with your original tax return, W-2s, 1099s, brokerage statements, and other records.
If you disagree, respond by the deadline and provide the requested explanation and supporting documents.
IRS information about CP2000:
3. An IRS Audit Is Different
A CP2000 or simple correction should not automatically be confused with an IRS audit.
An audit is a more detailed examination of your tax return. The IRS may want to verify income, deductions, tax credits, business expenses, or other information reported on the return.
Audits can generally be conducted:
By mail — the IRS requests information and documents through correspondence.
At an IRS office — you may be asked to meet with an IRS examiner and provide specific records.
In the field — an IRS examiner may conduct a more extensive review of books and records at your home, business, or representative’s office.
An audit does not automatically mean the IRS has already proven your return is wrong. It means the IRS is examining whether the information reported on the return can be supported.
If you receive an audit notice, pay close attention to exactly what documents the IRS is requesting and the deadline for providing them.
IRS information about audits:
4. Didn’t File a Tax Return? The IRS May Prepare One for You
Not filing a tax return does not make the tax problem disappear.
If you were required to file but didn’t, the IRS may use information already available to it — such as W-2s, 1099s, and other income records — to determine a tax liability through the Substitute for Return (SFR) process.
The problem is that the IRS is working with the information it has.
It may not have all of the information that would appear on a properly prepared tax return.
That means you should not automatically assume an IRS-prepared return represents the correct final amount you legally owe.
There is another important issue: an IRS-prepared Substitute for Return generally does not start the normal three-year assessment limitation period. Filing your own valid return generally starts that period.
If the IRS has prepared a return for you, don’t assume it is too late to address the situation.
IRS information about past-due returns:
IRS information about the time the IRS can assess tax:
5. Notice of Deficiency: Don’t Miss the 90-Day Deadline
This is one of the IRS letters that deserves immediate attention.
A Notice of Deficiency, sometimes called a 90-day letter, generally gives you 90 days to petition the U.S. Tax Court if you disagree with the IRS determination.
The period is generally 150 days when the notice is addressed to a person outside the United States.
This deadline matters because missing it can affect your ability to challenge the tax in Tax Court before paying it.
If you receive a Notice of Deficiency, check the petition deadline immediately.
Do not put the letter aside because you plan to deal with it later.
IRS information about a CP3219A Notice of Deficiency:
6. Identity Theft & Identity Verification: Not Every Letter Is Handled the Same Way
Sometimes an IRS letter has nothing to do with an audit or additional tax.
The IRS may simply need to confirm that you actually filed the tax return submitted under your name.
The IRS screens returns for possible identity theft. If it identifies a suspicious return, it may stop processing that return until the taxpayer completes the required verification. (IRS)
This is one area where the exact letter number matters, because different identity-verification letters require different responses.
Letter 5071C — Verify Online
This letter tells the taxpayer to use an IRS online tool to verify identity and tax return information.
If you did not file the return, the online process can also be used to tell the IRS.
Letter 4883C — Call the IRS
This letter generally requires you to call the IRS to verify your identity and tax return information.
Have the letter and the requested tax information available when you call. Follow the instructions and use the telephone number provided in your letter.
Letter 5747C — Verify in Person
This letter generally requires you to verify your identity and tax return information in person at an IRS Taxpayer Assistance Center.
Follow the appointment instructions contained in your letter.
Letter 5447C — Potential Identity Theft Outside the U.S.
This letter is used for certain potential identity-theft situations involving taxpayers outside the United States and may provide online or telephone verification options.
The IRS currently identifies all four of these letters and specifically instructs taxpayers to follow the verification method provided in their particular letter. (IRS)
IRS information about identity-verification letters:
What if you didn’t file the return?
If you filed the return, follow the verification instructions so the IRS can continue processing it.
If you did not file the return, tell the IRS as instructed. Someone may have attempted to file a fraudulent tax return using your personal information.
What if the IRS shows wages you never earned?
Identity theft can also involve someone using your Social Security number for employment.
If you receive a W-2 or 1099 from an employer you don’t recognize, don’t simply add that income to your tax return because it appears under your Social Security number.
Similarly, if a CP2000 includes wages that were not earned by you or your spouse, follow the IRS instructions for reporting the incorrect income rather than simply paying the proposed tax.
IRS information about employment-related identity theft:
Client tip: Don’t treat every identity-verification letter the same. Read the letter number and follow the exact instructions for the letter you received.
7. Balance Due Notices: The Situation Can Become More Serious
If the IRS says you owe money, the collection process can move through different stages.
Not every collection notice has the same urgency.
CP14 — You Have a Balance Due
A CP14 generally tells you that IRS records show an unpaid balance.
First, verify the amount.
Check whether your withholding, estimated tax payments, prior payments, and other credits were applied correctly.
If the balance is correct, paying sooner generally reduces additional interest and applicable penalties.
CP501 and CP503 — The Balance Is Still Unresolved
These are follow-up notices reminding you that the balance remains unpaid.
The important point is that the problem has not disappeared. The account is moving further into the IRS collection process.
CP504 — Notice of Intent to Levy
A CP504 is more serious. It is a Notice of Intent to Levy and warns that collection action may follow if the balance remains unresolved.
At this point, don’t treat the letter as another routine reminder.
IRS information about CP504:
LT11, Letter 1058, or CP90 — Act Promptly
These are Final Notice of Intent to Levy communications and can carry important Collection Due Process rights.
For example, the IRS states that LT11 and Letter 1058 mean it intends to seize property or rights to property and that the taxpayer may request an appeal of the proposed levy action by following the instructions in the letter. (IRS)
Depending on the notice and circumstances, you may generally have 30 days to request a Collection Due Process hearing.
If the matter remains unresolved, levy action can potentially reach wages, bank accounts, business assets, certain personal assets, and other property. (IRS)
IRS information about LT11 and Letter 1058:
The key distinction is simple:
“I owe the IRS money” is not the same as “I received a Final Notice of Intent to Levy.”
The second situation can involve important appeal rights and strict deadlines.
8. Tax Lien vs. Tax Levy: What’s the Difference?
These two terms sound similar, but they mean different things.
A federal tax lien is the government’s legal claim against your property when you have an unpaid tax debt.
A levy is an actual legal seizure of property or rights to property to satisfy the tax debt.
For example, a levy can potentially reach wages, bank accounts, business assets, and certain other property.
A Notice of Federal Tax Lien can also come with important appeal rights.
Client tip: If your IRS correspondence contains the words lien, levy, or Final Notice, pay close attention to both the notice number and the deadline.
IRS information about federal tax liens:
IRS information about levies:
9. What If the IRS Is Wrong?
An IRS notice should be reviewed, not blindly accepted.
Depending on the issue, a proper review may involve comparing the notice with:
Your originally filed tax return
IRS account transcripts
IRS Wage & Income transcripts
W-2s and 1099s
Brokerage statements and cost basis
Withholding and estimated tax payments
Tax credits and deductions
Supporting documents
Penalty and interest calculations
Sometimes the IRS is completely correct.
But sometimes there is missing information, incorrect third-party reporting, missing investment basis, a payment applied incorrectly, or another issue affecting the IRS calculation.
Verify first. Respond second.
10. You Owe the IRS — But Can’t Pay in Full. What Now?
If the balance is correct but you cannot afford to pay everything immediately, ignoring the IRS usually makes the situation worse.
Depending on your financial situation and eligibility, possible options may include:
Installment Agreement
You pay the IRS balance over time through scheduled payments.
Partial-Pay Installment Agreement
In qualifying situations, a taxpayer may make payments even when those payments are not expected to fully satisfy the liability before the IRS collection period expires.
Currently Not Collectible Status
If paying the IRS would create qualifying financial hardship, the IRS may temporarily delay active collection.
This does not mean the tax debt has been forgiven.
Offer in Compromise
Certain taxpayers may qualify to settle an IRS tax debt for less than the full amount owed.
An Offer in Compromise is not simply a negotiation to pay less. Eligibility depends on specific IRS rules and the taxpayer’s financial circumstances.
These programs are not automatic, and not everyone qualifies.
The appropriate solution depends on your income, necessary living expenses, assets, tax compliance, amount owed, and other circumstances.
IRS information about payment options:
IRS information about Offers in Compromise:
11. Don’t Forget About Penalty Relief
Even when the underlying tax is correct, the penalties may deserve a separate review.
There has also been an important change in 2026.
The IRS introduced the Automatic Exemption from Penalty (AEP) program, which is replacing the long-standing First Time Abate administrative relief for eligible returns as the new program is implemented. AEP applies to eligible original returns beginning with tax year 2025, 2026 quarterly returns, and future periods. Eligible taxpayers generally need a history of timely compliance during the prior three years. When AEP applies, no separate request is required. (IRS)
Not every taxpayer or return qualifies.
Taxpayers who do not qualify for automatic relief may still have other potential penalty-relief options, including reasonable cause, depending on the type of penalty and the taxpayer’s circumstances.
So don’t look only at the total balance.
Break it down:
Tax + Penalties + Interest = Total Balance
You may legitimately owe the underlying tax while still having grounds for relief from some penalties.
IRS information about penalty relief:
IRS information about the new Automatic Exemption from Penalty:
So, How Worried Should You Be?
Instead of asking:
“Is getting an IRS letter bad?”
Ask:
“Where am I in the IRS process?”
A simple correction is different from a CP2000.
A CP2000 is different from an audit.
An audit is different from a Notice of Deficiency.
A CP14 balance-due notice is different from a Final Notice of Intent to Levy.
And an identity-verification letter may have nothing to do with owing additional tax at all.
That is why the notice number and deadline matter.
The Bottom Line
If an IRS letter shows up in your mailbox:
Open it. Read every page. Identify the notice or letter number. Check the tax year. Check the deadline. Understand exactly what the IRS wants. Then verify the information before you agree, pay, or respond.
Don’t panic.
Don’t automatically pay.
Don’t automatically assume the IRS is wrong.
And most importantly, don’t ignore the deadline.
Sometimes the IRS is correct. Sometimes documentation resolves the issue. Sometimes a proposed adjustment should be challenged. And sometimes there are options for dealing with a legitimate tax debt.
The sooner you understand where you are in the IRS process, the easier it is to determine what should happen next.
Received an IRS Notice? We Can Help.
Not sure what your IRS letter means or what you should do next?
San Diego Precision Tax Service Inc. can review your IRS notice, verify the IRS calculation, explain where you are in the process, and help you understand the options available for your specific situation.
Don’t ignore an IRS notice — but don’t assume you have to accept it without reviewing it first.
Viktoriya Barsukova, EA, MBASan Diego Precision Tax Service Inc.
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