A letter from the IRS sitting on your desk is enough to ruin anyone’s day. Most small business owners who receive one either panic and call whoever they can reach, or do the one thing that makes the situation significantly worse: ignore it.
Neither response is right. IRS notices follow a specific logic, and once you know how to read them, most turn out to be far less catastrophic than they look at first glance. Here’s exactly what to do — step by step — when an IRS notice arrives.
First and Most Important: Do Not Ignore It
The IRS sends notices for a reason, and ignoring them doesn’t make the underlying issue go away — it escalates it. A CP2000 notice (a proposed change to your return) that goes unanswered becomes a formal assessment. An unpaid assessment becomes a lien. A lien becomes a levy. Each step in that chain is harder and more expensive to resolve than the last.
You have time — almost every IRS notice includes a response deadline, and it’s typically 30 to 60 days from the notice date — but the clock starts the day the notice is dated, not the day you open it. Read it the same day it arrives.
What Kind of IRS Notice Did You Receive?
The IRS uses a standardized notice system. Every notice has a code — a letter and number combination printed in the upper right corner. Knowing the code tells you immediately what the IRS is actually communicating. The most common notices small business owners receive:
- CP2000 — The IRS received income reported by a third party (a bank, payment processor, or 1099 issuer) that doesn’t match your tax return. This is a proposed adjustment, not a final bill.
- CP14 — First notice that you owe a balance. Usually arrives when a return was filed but the full tax amount wasn’t paid.
- CP503 / CP504 — Balance due reminders with escalating urgency. CP504 is the serious one — it’s a notice of intent to levy, meaning the IRS is formally telling you they plan to seize assets if you don’t respond.
- LT11 / Letter 1058 — Final notice of intent to levy. This is the last warning before the IRS takes action against your bank account, wages, or property.
- Letter 2205 / 2205-A — Audit notification. The IRS is examining your return and wants documentation to support it.
- CP90 — Notice of levy on wages, bank accounts, or other property. At this point, the IRS has already moved past warnings and is taking action.
The notice code is the first thing to look for. It tells you what category of situation you’re dealing with before you read another word.
Step 1: Read the Entire Notice Before Doing Anything
IRS notices are written in relatively plain language. Read the entire notice before making any calls or decisions. What you’re specifically looking for:
- The notice type and what the IRS says happened
- The tax year or period involved
- The dollar amount at issue, if any
- What the IRS is asking you to do
- The deadline to respond
- A contact phone number (usually printed in the upper right or left corner)
Don’t make assumptions based on the dollar amount alone. A large number on a CP2000 notice is a proposed change — the IRS is asking whether it’s correct, not telling you that you owe it outright. Context matters significantly here.
Step 2: Pull Your Records for That Tax Year
Whatever the notice is about, you’ll need documentation. Pull your records for the specific tax period in question:
- Your original tax return and all schedules
- Bank statements and credit card statements for that period
- All 1099s, W-2s, and income documents you received that year
- Receipts and expense records for deductions claimed
- Any prior IRS correspondence about the same period
If your bookkeeping was current for that year, this step is straightforward. If your books were disorganized — if you’re dealing with a notice AND messy records at the same time — that’s a clear signal you need professional help, because the records problem will compound the IRS problem and make it harder to respond effectively.
Step 3: Determine Whether the IRS Is Actually Right
This is the step most people skip because they assume the IRS must be correct. They’re not always. The most common reasons IRS notices contain errors:
- A 1099 was issued to you in error or for the wrong amount
- Income was reported twice — by two different payers for the same payment
- A tax payment you made wasn’t correctly applied to your account
- A deduction was flagged, but you have documentation that supports it
- The IRS applied your return to the wrong tax year
- A third party (like a bank or payment processor) reported income that was already on your return under a different line
Compare what the IRS says against your records carefully. If the IRS is right, move to step 4. If the IRS is wrong or partially wrong, your response changes significantly — you’ll need to document your position clearly and dispute the proposed change before the deadline.
Step 4: Respond Before the Deadline — No Exceptions
Almost every IRS notice requires a response, even if that response is simply confirming you agree with the assessment and intend to pay. Responding on time:
- Stops the automatic escalation process in its tracks
- Gives you the legal opportunity to dispute errors
- Opens the door to payment arrangements if you agree you owe the amount
- Preserves your appeal rights if you disagree
If you need more time to gather records or consult a professional before responding, call the number on the notice and request a deadline extension. The IRS typically grants 30-day extensions for initial response deadlines on most notice types — but you have to ask before the deadline passes, not after.
When You Can Handle It Yourself vs. When to Call a Professional
Not every IRS notice requires professional representation. You can generally handle it yourself if:
- It’s a simple balance due notice and you agree with the amount owed
- It’s a CP2000 and the proposed change is clearly correct based on your records
- It’s a request for a single document you have readily available
- The dollar amount is small and straightforward
You should strongly consider calling a professional if:
- The notice involves a large dollar amount
- It’s a formal audit notification (Letter 2205 or similar)
- It’s a final notice of intent to levy (LT11 or Letter 1058)
- You have multiple years of unfiled returns
- You don’t have the records to support your original return
- You’ve already responded once and the situation didn’t improve
- You’re dealing with payroll tax issues, which carry personal liability
What an Enrolled Agent Can Do That You Can’t
A federally authorized Enrolled Agent has the legal authority to represent you before every level of the IRS — audits, appeals, and collections — in all 50 states. That means an EA can call the IRS on your behalf, appear in your place at an audit, negotiate a payment plan or offer in compromise, and file paperwork as your authorized representative.
More importantly, an experienced EA doesn’t just respond to the notice in front of them — they look at why it happened and whether anything else is likely to follow. A CP2000 on one tax year sometimes signals a pattern the IRS is examining across multiple years. Knowing that early changes your entire strategy.
Simple Books Now handles IRS tax resolution as a core part of the practice — not a referral to someone else. If you’ve received a notice and you’re not sure what it means or what your best move is, a free 30-minute consultation is a low-risk way to get clarity before you respond.
