Got an IRS Letter? What to Do in the First 48 Hours in Houston

You came home, found an envelope from the Department of the Treasury, and your stomach dropped before you even opened it. We see this pattern every week at our Sugar Land office. Someone in Bellaire, Stafford, or southwest Houston gets a multi-page letter, reads three lines, and assumes the worst. Most of the time, the worst is not what is actually in the envelope. But the wrong move in the first 48 hours can turn a routine notice into a real problem.

This post is written by Thuy Nguyen, JD, CPA, CTC, CTRS at Nguyen Accounting Group, with 24 years of Houston tax practice and bilingual English and Vietnamese intake. It walks through how to verify the letter is real, which notices have a hard deadline, what to do in hour 1 versus hour 24 versus hour 48, and when calling the IRS actually accomplishes something.

First, breathe. The IRS does not show up at your house in the first 48 hours after a notice. They do not freeze your bank account in the first 48 hours. You have time to do this right.

Key takeaways for the first 48 hours

• Not every IRS letter is an emergency. A CP2000 is a proposal, a CP14 is a first bill, a CP504 is a state-refund levy warning, and an LT11 or Letter 1058 is the only notice that triggers a 30-day Collection Due Process clock for wage and bank levies.

• The IRS first contacts you by mail, never by text, email, or social media. If someone called you first claiming to be the IRS, it is a scam.

• Verify the notice number printed in the upper right corner. Cross-check it against IRS.gov by typing the notice number directly. Never call a phone number printed in a suspicious letter without verifying.

• The IRS general number is 800-829-1040. The Automated Collection System line is 800-829-7650. Use these if the notice on hand does not have a clean number printed.

• If you cannot meet the response date, you can request more time. The deadline matters, but it is rarely as fixed as the letter implies.

• Do not pay the proposed amount on a CP2000 without verifying the IRS math. In our practice, the proposed balance overstates the actual tax owed more often than not.

• Do not file an amended return in response to a CP2000 unless the IRS instructs you to. It conflicts with the CP2000 process and slows everything down.

Hour 1: verify the letter is real

Scam letters made to look like IRS notices are common in Houston and surrounding cities, especially targeting Vietnamese-speaking and Spanish-speaking households who are less likely to challenge an authoritative-looking document. Before you do anything else, confirm this letter is real.

Look at the upper right corner. There is a notice number printed there, usually starting with CP or LT followed by a number. CP14, CP2000, CP504, LT11, CP90, CP91, and CP501 are all real. Type that notice number into the search bar on IRS.gov. The official IRS page for that notice will load and tell you exactly what the letter is supposed to look like, what it should say, and what the response window is.

Red flags that the letter is a scam: it demands payment by gift card, wire, or cryptocurrency. It threatens immediate arrest. It only lists a phone number with no notice number. It is missing the IRS seal. It came by email or text. Real IRS first contact is always by mail. If anything on the page does not match the IRS.gov reference, do not call the number on the letter. Use the IRS general line at 800-829-1040 instead.

If you would feel safer running it past a tax professional first, bring the letter to a consult. We do this for free at Nguyen Accounting Group. Five minutes of credential check is worth more than a week of wondering.

Hour 1 to hour 4: identify which notice you actually have

Not every IRS letter is the same. They have very different deadlines and very different consequences. Here are the ones we see most often in Houston, plain English version of what each one means.

CP14: you owe money on your tax return

This is a first bill. The IRS processed the return you filed and the math came out to a balance due that you did not pay with the return. The amount is real, it has been assessed, and interest and penalties are already running. The response date on a CP14 is usually 21 days. Paying or setting up an Online Payment Agreement at irs.gov/OPA inside that window stops the collection escalation.

CP2000: proposed change, not a bill

A CP2000 comes from the IRS Automated Underreporter program. A computer compared the income on your tax return to the W-2s, 1099s, K-1s, and similar third-party forms the IRS received with your Social Security number on them. The computer found a gap and is proposing a tax increase. This is not assessed yet. You have 30 days to respond. In our experience, the proposed number is often too high because the computer adds income without giving you the basis, business expenses, or rollovers that go with it. We have a full breakdown of how to read and respond to a CP2000 at myhoustoncpa.com/post/irs-cp2000-notice-houston.

CP501 and CP503: reminder bills

These are escalating reminders of a balance from a CP14 you did not resolve. The dollar amount has grown because penalties and interest accrued. The window to act before the next escalation is usually 21 days from the notice date. Still no levy threat at this stage, but the next letter is more serious.

CP504: notice of intent to levy your state refund

This is the first notice that uses the word levy. According to IRS.gov, the CP504 warns that if you do not pay within 30 days, the IRS can levy your state tax refund. It is also the IRS signal that an actual final notice of intent to levy your wages and bank accounts is coming next. The CP504 does not by itself authorize a wage or bank levy. The LT11 or Letter 1058 does. But the CP504 is your last warning to get ahead of this before the harder collection notice arrives.

LT11 or Letter 1058: final notice of intent to levy and notice of your right to a hearing

This is the one that actually triggers the 30-day Collection Due Process clock. According to the Taxpayer Advocate Service and IRS.gov, you have 30 days from receipt of an LT11 or Letter 1058 to file Form 12153 and request a Collection Due Process hearing with the IRS Independent Office of Appeals. Filing Form 12153 inside the 30 days suspends levy action while the hearing is pending. This is the most time-sensitive notice in the entire collection series. If you have an LT11 in hand, this is the one you do not delay on.

CP90, CP91, CP297: levy notices for specific situations

CP90 is a final notice of intent to levy on certain benefits, CP91 is the same for Social Security, CP297 covers business levies. Each one starts a 30-day window similar to the LT11.

Statutory Notice of Deficiency, the 90-day letter

This usually arrives after an unresolved CP2000 or after an examination. It gives you 90 days to petition the United States Tax Court if you disagree with the proposed tax. Miss the 90-day window and the tax is assessed and becomes a real bill. Texas residents have until the 90th day, exactly. The deadline is statutory and the Tax Court will not accept a petition postmarked one day late.

Hour 4 to hour 24: pull your records and decide your move

Once you know which notice you have and what its real deadline is, pull the underlying tax return and any documents the notice references. For a CP2000, that means brokerage statements, 1099 forms, K-1s, expense records for self-employment income. For a CP14, the original return and any payment records. For an LT11 or CP504, you mostly need to know the total balance, the tax years involved, and whether you can pay in full, set up an installment agreement, or need a longer-horizon resolution.

If you owe $50,000 or less in combined tax, penalties, and interest, you can apply for an Online Payment Agreement at irs.gov/OPA in about 20 minutes and avoid filing the paper Form 9465. This works for most CP14, CP501, and CP503 balances. If you owe more or the situation involves multiple years or unfiled returns, the path is more complex and that is the conversation to have with a CPA.

We have a separate post that lays out realistic timelines for each resolution path at myhoustoncpa.com/post/how-long-does-tax-resolution-take-in-houston-real-timelines-by-case-type. Read it before assuming anything has to happen in a week. Most resolution paths run weeks or months. The notices have deadlines, the resolutions take time.

Hour 24 to hour 48: decide who answers the letter

Three real options here. Handle it yourself. Bring in a CPA, enrolled agent, or tax attorney. Or use the Taxpayer Advocate Service if the notice is causing economic harm.

Handle it yourself when the notice is a CP14 you can pay or finance through an Online Payment Agreement, a CP2000 with a single small item where the math is clearly correct, or a CP501 reminder you intend to pay this week. These are routine.

Bring in a tax professional when the proposed balance is large enough that being wrong is expensive. When the notice involves stock or crypto basis questions. When the notice involves self-employment income and you have offsetting expenses to claim. When you have multiple flagged items. When the notice is an LT11 or Letter 1058 and the 30-day CDP clock is running. When you have unfiled returns the IRS has been asking about. Or when you simply want someone with a Power of Attorney on Form 2848 to deal with the IRS so you can sleep.

Contact the Taxpayer Advocate Service by filing Form 911 when the notice or IRS action is causing significant financial hardship, the IRS has not resolved your issue through normal channels, or you face an immediate threat of adverse action that normal IRS procedures will not stop in time. TAS is a free IRS-internal advocate and is the right path for true emergencies. We can file the Form 911 with you if needed.

When calling the IRS actually helps and when it does not

Calling the IRS general line at 800-829-1040 helps when you need to verify a notice is real, request a copy of a notice you lost, ask for more time to respond before the deadline passes, set up a simple installment agreement on a balance the IRS already assessed, or check on the status of a previously filed response. The Automated Collection System line at 800-829-7650 is the right number when you have a collection notice in hand and the IRS already has your case in their automated collection workflow.

Calling the IRS does not help when you have a CP2000 you want to dispute. That is in writing, with documents. It does not help when you want to challenge a Statutory Notice of Deficiency. That is in writing, with the Tax Court. It does not help when you want to negotiate an Offer in Compromise. That requires Form 656 and a documented financial package. Phone calls are for verification, deadline extension, and simple setup, not for the substance of the resolution.

If you do call, have the notice, your last filed return, and your Social Security number in front of you. Expect a long hold, especially January through April. Write down the IRS employee number of whoever you speak with and the date and time of the call. If a deadline is at issue, ask for a confirmation of the extension in writing or in the IRS account transcript.

What it costs to have a Houston CPA handle an IRS letter

A single-item CP2000 response or a CP14 installment agreement setup typically runs $300 to $750 at most Houston firms. A multi-item CP2000 with basis reconstruction, 1099-K separation, or Schedule C work runs $750 to $2,000. An LT11 response with Form 12153 and a Collection Due Process hearing runs $1,500 to $4,000. An Offer in Compromise package runs $2,500 to $7,500 depending on complexity. We lay out the full Houston-area CPA pricing landscape at myhoustoncpa.com/post/how-much-does-a-cpa-cost-in-houston-a-2026-pricing-guide. At Nguyen Accounting Group we quote a flat fee per case after a free consult, never a percentage of savings and never an open hourly meter.

Compare the fee against the proposed balance on the letter. If a $400 CP2000 response converts a proposed $11,000 increase into a $1,400 actual increase, the math is obvious. The expensive choice is ignoring the letter or paying a number that is wrong.

Mistakes we see Houston taxpayers make in the first 48 hours

• Paying a CP2000 proposal without checking the math because the letter looks final. It is a proposal until you agree or the window closes.

• Ignoring an LT11 or Letter 1058 because the prior CP504 did not result in anything visible. The LT11 is the one that authorizes wage and bank levies.

• Filing a Form 1040-X amended return in response to a CP2000. This conflicts with the CP2000 process and delays resolution.

• Calling a phone number printed inside a suspicious letter. Verify the notice on IRS.gov first and use the published IRS numbers if you need to call.

• Paying by gift card, wire, or cryptocurrency. The real IRS does not accept these for tax payments. Anyone asking is a scammer.

• Missing the 30-day CDP window on an LT11. After 30 days the right to a Collection Due Process hearing is largely lost and the only path is the slower Equivalent Hearing or post-levy appeal.

• Telling the IRS verbally that you agree to something complex before getting it in writing. Verbal agreements on installment terms can be later disputed by the IRS. Get it in your IRS account transcript.

Bilingual help for Vietnamese-speaking Houston taxpayers

IRS notices carry a lot of nuance and the consequences of misreading one are expensive. Sugar Land, Bellaire, southwest Houston, Stafford, and Mission Bend all have large Vietnamese-speaking populations who often handle IRS correspondence in their second language. Nguyen Accounting Group provides full bilingual English and Vietnamese consultations and IRS representation. If your parents or grandparents received a notice and the language is making them anxious, bring it in and we will explain it in Vietnamese and walk through the response.

FAQ

How do I know if an IRS letter is real?

Look at the notice number in the upper right corner, type it into IRS.gov, and confirm the page describes what you have in hand. Real IRS first contact is always by mail, never by text, email, or social media. Real IRS letters do not demand payment by gift card, wire, or cryptocurrency.

Should I call the IRS if I get a letter?

Sometimes. Call when you need to verify a notice, request more time, set up a simple installment agreement, or check on a prior response. Do not call to dispute a CP2000 or challenge a Statutory Notice of Deficiency. Those go in writing. The general IRS line is 800-829-1040, the ACS collection line is 800-829-7650.

How long do I have to respond to an IRS letter?

It depends on the notice. CP14, CP501, and CP503 give about 21 days. CP2000 gives 30 days. CP504 gives 30 days. LT11 and Letter 1058 give 30 days to file Form 12153 for a Collection Due Process hearing. A Statutory Notice of Deficiency gives 90 days to petition Tax Court. The response date is printed near the top of the notice.

What is the most serious IRS letter?

The LT11 or Letter 1058, called the final notice of intent to levy. It triggers the 30-day Collection Due Process window. Miss it and the IRS can begin wage garnishment, bank levies, and other enforced collection. The Statutory Notice of Deficiency is the most serious notice on the examination side.

Can a CPA call the IRS for me?

Yes, with Form 2848 Power of Attorney on file. The CPA can pull your IRS account transcripts and wage and income transcripts, call ACS or the practitioner priority line, request holds on levy action, and negotiate installment agreements on your behalf. This is one of the most useful things a CPA does for tax resolution clients.

What if I cannot afford to pay what the IRS says I owe?

Installment agreement, partial pay installment agreement, Currently Not Collectible status, and Offer in Compromise are all paths. Form 9465 sets up an installment agreement, Form 656 with Form 433-A or 433-B is the OIC package. The right path depends on your financial picture, the size of the balance, and the years involved. This is the core conversation in a tax resolution consult.

Will responding to a notice put me on an IRS radar?

A clear, documented response to a notice does not increase your audit risk. The opposite is more often true. A vague response or no response is what causes the IRS to escalate. The CP2000 process, the installment agreement process, the Offer in Compromise process are all designed pathways. Using them correctly is the safest move.

Ready to talk

Bring the letter, bring your last filed return, and we will tell you in a free 30-minute consult what the notice actually means, what deadline you are working against, and what a documented response looks like. You leave with a real plan and a flat-fee quote. Call 832.500.4299 or book online. We are at 12440 Emily Ct Suite 303, Sugar Land, TX 77478, Monday through Friday 9 AM to 1 PM and 2 PM to 5 PM. Bilingual English and Vietnamese.