IRS Notice Help in Las Vegas: CP2000, Unfiled Returns, and Back Taxes

By the iQTAXX tax team, 6360 S Rainbow Blvd, Suite 101, Las Vegas. Updated October 28, 2026. Rules checked against IRS CP2000, past-due return, penalty and payment plan pages.

Quick answerIf you got an IRS letter, don't ignore it and don't panic. Find the notice number in the top or bottom right corner (for example CP2000, CP14, or CP504) and the response date. A CP2000 is not a bill. It is a proposal saying the income the IRS received from employers, banks, or apps doesn't match your return, and you can agree, partly agree, or disagree by the date listed. iQTAXX helps Las Vegas taxpayers read the notice, gather the paperwork, prepare the response, and file any missing or amended returns. We are tax preparers, not CPAs or enrolled agents, so we explain below exactly what we can and can't do with the IRS for you. Call 702.871.7884.

[Bring us your IRS letter] · or call 702.871.7884

Key facts for Las Vegas and Clark County, Nevada filers, 2026 (updated October 28, 2026)

• An IRS CP2000 is a proposed change, not a bill: you can agree, partly agree, or disagree by the response date on the letter (IRS, "Understanding your CP2000 series notice")
• Find the notice number (for example CP2000, CP14, CP504) in the top or bottom right corner
• We help read the notice, gather records, prepare the response, and file missing or amended returns
• iQTAXX preparers are not CPAs or enrolled agents; AFSP Record of Completion holders may represent clients only on returns they prepared and signed (IRS, "Annual Filing Season Program")
• iQTAXX, 6360 S Rainbow Blvd, Suite 101, Las Vegas, NV 89118 · 702.871.7884 · open year-round · 4.7 stars from about 149 Google reviews (October 2026)

4.7 stars from about 149 Google reviews (October 2026) · 6360 S Rainbow Blvd, Suite 101, Las Vegas, NV 89118 · Open year-round, not just in tax season

What we can do, and what we can't

The IRS sets who may speak for you. Here is where iQTAXX fits, based on the IRS rules for the Annual Filing Season Program (AFSP).

We can:

• Read your notice with you and explain what it means in plain language
• Pull your IRS transcripts with your permission, so we see what the IRS sees
• Prepare your CP2000 response, with a signed response form and supporting documents
• Prepare past-due returns for any year and amended returns (Form 1040-X)
• Help you request a payment plan online, which you can set up yourself on IRS.gov
• Talk with the IRS about a return we prepared and signed, before IRS customer service staff, revenue agents (examiners), and the Taxpayer Advocate Service. This is the limited representation right that AFSP Record of Completion holders like Chuck Blackard have.

We can't:

• Represent you in collection matters with a revenue officer, such as levies, liens, or an offer in compromise
• Represent you in IRS Appeals or Tax Court
• Represent you on a return someone else prepared

When your case needs one of those, we tell you right away and help you find a CPA, enrolled agent, or tax attorney who can sign Form 2848 and represent you. For returns we prepared, you sign IRS Form 8821 (Tax Information Authorization) so we can speak with the IRS about your account. Form 8821 is not a power of attorney (Form 2848). We can still prepare the returns and paperwork they need.

The IRS notices we see most

• Notice: CP2000; What it means: Income on file (W-2, 1099, 1099-K, 1099-B) doesn't match your return. It proposes a change. Not a bill.; What to do: Reply by the date listed: agree, partly agree, or disagree with proof.
• Notice: CP2501; What it means: An earlier, softer version of the same mismatch; What to do: Reply with an explanation or documents.
• Notice: CP14; What it means: You owe a balance; What to do: Pay, or set up a payment plan. Penalties and interest keep growing.
• Notice: CP501 / CP503; What it means: Reminders that a balance is still unpaid; What to do: Same as CP14. Act now.
• Notice: CP504; What it means: Notice of intent to levy; What to do: Urgent. Call us the same week.
• Notice: LT11 or Letter 1058; What it means: Final notice of intent to levy, with appeal rights; What to do: You have 30 days to request a Collection Due Process hearing. This needs a CPA, enrolled agent, or attorney.
• Notice: CP59 / CP515; What it means: The IRS shows no return filed for a year; What to do: File the missing return.
• Notice: CP3219N; What it means: Notice of deficiency after the IRS filed a substitute return for you; What to do: You have 90 days to file your own return or petition Tax Court.

Sources: IRS "Understanding your CP2000 series notice" (updated July 14, 2026) and IRS "Filing past due tax returns" (updated May 7, 2026).

How a CP2000 response works

1. Check the date. The response date is printed on the notice. It is usually about 30 days from the notice date. If you need more time, you can ask for it with your reply.
2. Match every line. The notice lists each form the IRS has. Compare each one with your return. Common Las Vegas mismatches: a 1099-K from a payment app or rideshare platform, a W-2G from a casino, a 1099-B from selling stock or crypto, or a 1099-NEC from gig work.
3. Find what the IRS doesn't know. The IRS often counts gross amounts with no costs. For example, a 1099-B shows the sale price but not what you paid, and a 1099-K shows gross receipts but not your business expenses.
4. Choose your answer. Agree, partly agree, or disagree. If the notice is right and you have nothing else to report, you don't need to amend. If you have other income, credits, or expenses, the IRS asks for a Form 1040-X marked "CP2000" at the top.
5. Send it. You can upload it with the IRS document upload tool, fax it, or mail it to the address on the notice.
6. Keep copies of everything you sent, and the date.

Example (figures for illustration): A rideshare driver gets a CP2000 for a $14,000 1099-K that wasn't on the return. The IRS proposes tax on all $14,000. The driver had 9,000 business miles. At the 2025 IRS standard mileage rate of 70 cents per mile, that is $6,300 of expenses, so the right extra income is about $7,700. A response with a Schedule C and a mileage log asks the IRS to tax $7,700, not $14,000.

Unfiled returns: how to catch up

• How many years? The IRS generally asks for the last 6 years of returns to be filed to be in good standing. Older years are usually not required unless the IRS asks for them.
• Refunds expire. You have 3 years from the original due date to claim a refund. For a 2022 return, that deadline was April 18, 2026, so that refund is gone. For a 2023 return, the deadline is April 15, 2027.
• Missing W-2s or 1099s? We can get your wage and income transcripts from the IRS with your permission.
• The IRS may have filed for you. A "substitute for return" usually leaves out your deductions and credits. Filing your own return usually lowers the bill.
• Self-employed? If you don't file, your earnings aren't reported to Social Security, which can lower your future benefits.

What penalties look like

• Penalty: Failure to file; Rate: 5% of the unpaid tax per month; Maximum: 25%
• Penalty: Failure to pay; Rate: 0.5% of the unpaid tax per month; Maximum: 25%
• Penalty: Interest; Rate: Set by the IRS each quarter, charged daily; Maximum: No cap

When both penalties apply in the same month, the failure-to-file penalty is reduced by the failure-to-pay amount.

Sources: IRS "Failure to file penalty" (updated Oct 5, 2026) and IRS "Failure to pay penalty". If you filed on time and have an approved payment plan, the failure-to-pay rate drops to 0.25% a month.

Example (figures for illustration): You owed $3,000 on a 2022 return that was due April 18, 2023, and you file and pay in October 2026, about 42 months late. Failure to file reaches its cap of 22.5% when failure to pay also applies, about $675. Failure to pay is about 0.5% × 42 months = 21%, about $630. That is roughly $1,305 in penalties, plus interest. Filing sooner stops the failure-to-file penalty from growing. You may qualify for first-time penalty relief if your record was clean for the 3 prior years.

If you can't pay

• Short-term plan: up to 180 days to pay if you owe less than $100,000 in tax, penalties, and interest.
• Long-term plan (installment agreement): you can apply online if you owe $50,000 or less.
• Offer in compromise: settling for less than you owe. This is a collection matter, so you need a CPA, enrolled agent, or attorney to represent you. Be careful with companies that promise to settle your debt for "pennies on the dollar." No one can promise that.

Source: IRS "Payment plans; installment agreements" (updated Aug 13, 2026). Online applications are for individuals; businesses call the number on the notice.

What it costs

• Service: CP2000 response and further work; Our fee: Quoted upfront after the consult
• Service: Each past-due year's return; Our fee: Priced by the schedules filed for that year; quoted upfront

We give you a written quote before we start. We will tell you up front if your case is outside what we can handle.

What to bring

• The IRS notice, every page, and the envelope
• The tax return for the year on the notice
• Every W-2, 1099, 1099-K, 1099-B, and W-2G for that year
• Proof of expenses or cost basis: receipts, mileage logs, brokerage statements
• Any letters you already sent to the IRS, and their replies

Client stories

A divorce decree the IRS misread. The IRS misapplied a client's divorce decree and tried to tax income that was not taxable. We sent the IRS the decree and the client's bank records, and the matter was resolved.

Years of back taxes. A new client came to us with several years of unfiled returns. We pulled the IRS transcripts, filed every past-due return, brought the client back into compliance and recovered thousands of dollars in refunds the client had missed.

Client stories are shared without names. Results vary, and past results do not predict the outcome of your situation.

IRS notice FAQs

Is a CP2000 notice a bill?No. A CP2000 is a proposal. The IRS is saying income it received from third parties doesn't match your return, and it is proposing a change. You can agree, partly agree, or disagree with documents by the date on the notice. If you don't reply, the IRS may send a bill.

How long do I have to respond to a CP2000?Reply by the date printed on the notice, which is usually about 30 days from the notice date. If you need more time, you can send an extension request with your reply. Missing the date can lead to a bill for the full proposed amount.

Can a tax preparer talk to the IRS for me?It depends on the preparer's credential. Preparers with an IRS Annual Filing Season Program Record of Completion can represent you only for returns they prepared and signed, and only before IRS customer service staff, examiners, and the Taxpayer Advocate Service. CPAs, enrolled agents, and attorneys can represent you on any matter, including collections and appeals.

How many years of unfiled tax returns do I need to file?The IRS generally asks for the last 6 years to be filed to be in good standing. If any of those years would give you a refund, file soon, because you only have 3 years from the original due date to claim it.

What happens if I never file a tax return?The IRS can file a substitute return for you, which usually leaves out your deductions and credits, and then send a bill. Penalties and interest keep growing, and the IRS can eventually levy wages or bank accounts. Filing your own return usually lowers what you owe.

Can I set up an IRS payment plan myself?Yes. If you owe $50,000 or less in combined tax, penalties, and interest, you can usually apply for a long-term payment plan online at IRS.gov. If you owe less than $100,000, you can ask for up to 180 days to pay in full.

Can iQTAXX get rid of my IRS debt?No one can honestly promise that. We can make sure your returns are correct, which often lowers what you owe, and help you set up a payment plan or ask for first-time penalty relief. Settling a debt for less, an offer in compromise, needs a CPA, enrolled agent, or tax attorney.

Do I need an enrolled agent in Las Vegas for IRS problems?It depends on the problem. Enrolled agents, CPAs and tax attorneys can represent you in any IRS matter, including collections and appeals. A preparer with an IRS Annual Filing Season Program record, like our team, can represent you only for returns we prepared and signed, and only before IRS examiners and customer service. iQTAXX can explain any notice and help answer a CP2000 for a return we prepared; for collection cases or appeals we'll tell you and help you find an enrolled agent, CPA or attorney.

Related iQTAXX guides

• how our Las Vegas tax preparation fees are determined
• IRS notice and resolution help

Talk to iQTAXX

Bring the letter, every page, and the return for that year. We'll tell you what it means, what we can do, and when you need a CPA, enrolled agent, or attorney instead.

iQTAXX · 6360 S Rainbow Blvd, Suite 101, Las Vegas, NV 89118 · 702.871.7884 · Contact us

Tax-season hours: Monday to Friday 9 AM to 7 PM, Saturday 9 AM to 5 PM, closed Sunday. Off-season hours: Monday to Friday 9 AM to 5 PM. Closed federal holidays except Columbus Day, and closed Nevada Day. Walk-ins and same-day clients are welcome; call ahead at 702-871-7884 to check availability. We speak English, Armenian, and Russian.

Related: Personal tax preparation · Tax extensions · Real estate investor tax · S-corp tax preparation · Business tax · Henderson tax preparation

This page is general information, not legal or tax advice. iQTAXX tax professionals are not attorneys, CPAs, or enrolled agents. Sources: IRS "Annual Filing Season Program" (updated January 29, 2026); IRS "Understanding your CP2000 series notice" (updated July 14, 2026); IRS "Filing past due tax returns" (updated May 7, 2026); IRS Publication 594. Checked October 17, 2026.