An envelope from the IRS is designed to get your attention, and it works. The useful thing to know is that nearly every notice is generated by a computer matching one record against another, and nearly every one has a specific, bounded response. The mistake that turns a routine notice into a real problem is ignoring it.
The first 48 hours
- Confirm it is real. The IRS starts contact by mail, not by phone, text or email. A genuine notice has a notice or letter number in the top right corner (CP followed by digits, or LTR followed by digits), a tax year, and your taxpayer identification number. It never demands payment by gift card, wire or cryptocurrency, and it never threatens immediate arrest. You can confirm any balance it mentions by signing in to your account at IRS.gov.
- Find three things. The notice number, the tax year it covers, and the response date. Write the date down. Deadlines run from the date printed on the notice, not the day you opened it.
- Read what it claims. Most notices say exactly what the IRS thinks changed: income it believes you left off, a payment it did not record, a return it says is missing, a penalty it assessed.
- Compare it with your return. Pull the return for that year and the records behind it. Often the explanation is simple: a 1099 was issued under the wrong number, a payment was applied to the wrong year, or an estimated payment posted late.
- Do not pay a balance you do not owe just to make it stop. Paying a proposed amount is treated as agreeing with it. Do not ignore a balance you do owe either; interest and penalties keep running.
- Send the notice to your tax preparer before you respond. A short review up front prevents a second round.
Common notices and what they want
| Notice | What it means | Typical response window |
|---|---|---|
| CP14 | You have a balance due on a filed return | Pay or set up a plan by the date on the notice, usually about three weeks out |
| CP2000 | Income reported to the IRS does not match your return; a proposal, not a bill | 30 days to agree, disagree with documentation, or partially agree |
| CP11 / CP12 | The IRS corrected a math or clerical error and changed your refund or balance | 60 days to dispute the change |
| CP501 / CP503 | Reminders of an unpaid balance | Pay or arrange a plan; each one escalates |
| CP504 | Intent to levy your state tax refund, with a warning of further collection | Urgent; respond before the date on the notice |
| LT11 or Letter 1058 | Final notice of intent to levy | 30 days to pay, arrange a plan, or request a Collection Due Process hearing |
| CP3219A | Notice of Deficiency after an unresolved CP2000 or audit | 90 days to petition the U.S. Tax Court; this deadline cannot be extended |
| CP161 | Balance due on a business return | Pay or arrange a plan by the date shown |
| CP162 | Late-filing penalty on a partnership or S corporation return | Pay, or request abatement if you qualify |
| CP59 | The IRS has no record of a return it expected | File the return or explain why none is due |
| Letter 5071C | Identity verification before a return is processed | Verify online or by phone; no tax change proposed |
The notice number tells you which lane you are in. Balance-due notices are about payment. Matching notices such as CP2000 are about documentation. Deficiency and levy notices are about hard deadlines with legal consequences, and those are the ones to escalate immediately.
How to respond
- Respond in writing, by the date on the notice, using the response form or the address the notice gives. Keep a complete copy of what you send, and keep the proof of mailing or the confirmation from the online upload tool when the notice offers one.
- If you agree, pay what you can and set up a payment plan for the rest. The IRS offers short-term plans of up to 180 days and longer installment agreements that can be arranged online for most balances.
- If you disagree, say so plainly and attach the documents that show why: the corrected 1099, the bank record of the payment, the amended return if one is needed. Opinions do not resolve a notice; records do.
- If you partially agree, say which items you accept and which you dispute.
Penalties can often be reduced
Failure-to-file and failure-to-pay penalties are frequently removed under the IRS first-time penalty abatement program if you filed and paid on time for the three previous years and have filed everything currently due. Penalties can also be removed for reasonable cause, such as a serious illness or a disaster, when you can document it. Interest generally cannot be removed, which is one more reason to resolve a balance quickly.
When to get help right away
- Any audit letter or request to examine records.
- A Notice of Deficiency, because the 90-day Tax Court window is absolute.
- A levy or lien notice.
- Anything involving payroll taxes. Unpaid payroll taxes can be assessed personally against the owners through the trust fund recovery penalty, and that is a different category of problem.
- Notices covering more than one year, or a problem that keeps coming back.
What we do with a notice
We read the notice against the return and the records, explain what it is actually asking in plain language, prepare the response and the documentation, and communicate with the IRS on your behalf until it is closed. Clients send us notices the day they arrive; the earlier we see one, the more options there are.
Book a Discovery Call if you are holding a notice and want it handled.
This guide is general information for small business owners, not advice for your specific situation. Tax law changes and the details matter, so talk with a professional before acting.
Sources: IRS, Understanding your IRS notice or letter · IRS, Payment plans and installment agreements · IRS, Penalty relief