An envelope from the IRS with the word “examination” in it can ruin anyone’s week. The good news is that most audits are handled by mail, and many end with little or no change to the tax you owe. The harder question is whether to handle yours alone or bring in a professional.
The answer depends on what the IRS is questioning, how much money is involved, and how well your records support your return. This guide covers what to do first, when responding yourself is reasonable, and when IRS audit representation is worth it.
Key Takeaways
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What to Do When You Receive an IRS Audit Letter
When you receive a notice from the IRS, the instincts can be worrisome. But the notice can be handled easily with a few simple steps. Firstly, carefully review the notice to identify the audit type and response deadline.
An Audit Does Not Automatically Mean You Did Something Wrong
An audit is a review to confirm your income, deductions, and credits were reported correctly. Returns are selected for several reasons:
- Computer scoring: Figures that look unusual compared with similar taxpayers.
- Information mismatches: Income that doesn’t match your W-2s, 1099s, or other third-party forms.
- Related examinations: A connection to a partner, investor, or business being audited.
- Random selection: Returns chosen for statistical sampling.
Many audits close with no change or a small adjustment the taxpayer agrees with.
Make Sure the Letter Is Really From the IRS
Scammers send fake IRS letters. The IRS starts audits by mail, not by phone, text or email, and it never demands payment by gift card or wire transfer. Look up the notice number on IRS.gov, call only numbers listed there, or check your IRS online account for the notice.
Check the Notice Number and Type of Audit
The notice number, usually in a top or bottom corner, tells you what you’re dealing with. There are three main types of audits:
- Correspondence audit: Handled by mail and usually limited to one or two items. This is the most common type.
- Office audit: A meeting with an IRS employee at a local IRS office.
- Field audit: A revenue agent visits your home, business, or accountant’s office. These are broader and often involve businesses.
A CP2000 notice isn’t technically an audit. It proposes changes because your reported income doesn’t match what payers reported, but you still need to respond by the deadline.
Identify the Tax Year and Response Deadline
Find the tax year under review and the response date. The deadline runs from the letter’s date, not the day you opened it, and is often about 30 days. Put it on your calendar right away.
What Should You Do After Receiving an IRS Audit Letter?
Once you’ve confirmed the letter and noted the deadline, the next step is building a focused, well-documented response. A careful response often resolves a simple audit on the first try.
Read the Letter and Identify What the IRS Is Asking For
Read the entire letter and any enclosures. Most audit letters list the specific items under review, such as charitable contributions, business expenses or dependents, and the documents the IRS wants. Your response should address those items and nothing else.
Gather the Relevant Tax Records
Collect records that directly support each item, such as:
- Receipts, invoices and canceled checks
- Bank and credit card statements
- Mileage logs and charity acknowledgments
- Records showing where a dependent lived
Organize them by issue and add a short cover letter that references the notice number and explains what each document shows.
Keep Copies of Everything You Send
Send copies, never originals. Mail your response by certified mail with return receipt, or use the upload option in the letter, so you can prove when the IRS received it. Note the name, ID number and date of any IRS employee you speak with.
Ask for More Time Before the Deadline If You Need It
If you need more time, contact the IRS before the deadline and ask for an extension. The IRS often grants one if you ask early and provide a reasonable explanation. After the deadline passes, getting extra time is much harder.
What Happens If You Ignore an IRS Audit Letter?
Some people set the letter aside and hope it goes away, but the audit keeps moving without them. Silence usually leads to the worst outcome, because the IRS decides without hearing your side.
Missing the Response Deadline
If the IRS doesn’t hear from you, the examiner closes the audit with only the information it already has. That usually means the items in question are disallowed, and any evidence you have is never considered.
Proposed Changes, Additional Tax, and the Notice of Deficiency
You’ll receive a report proposing additional tax, interest and often a 20% accuracy-related penalty. If you still don’t respond, the IRS issues a notice of deficiency, or 90-day letter. You then have 90 days to petition the U.S. Tax Court. After that, the IRS assesses the tax and can begin collection, including liens, levies and wage garnishments.
Your Options After Missing the Deadline
Missing the deadline limits your options but rarely ends them:
- Before the 90 days run out: You can still petition the Tax Court.
- After the tax is assessed: You may request audit reconsideration with the documents you didn’t send earlier.
- Pay and claim a refund: You can pay the tax, file a refund claim, and sue if it’s denied.
Can You Respond to an IRS Audit Yourself?
Yes. You have the right to represent yourself, and many taxpayers handle simple audits on their own. The key is being honest about whether your situation is truly simple.
When Handling an Audit Yourself May Be Reasonable
Responding on your own can make sense when:
- It’s a correspondence audit about one or two items
- The amount at stake is small
- Your records clearly support what you reported
- There’s no question about business income, unreported income or intent
Risks of Responding Without Professional Guidance
Even simple audits can go wrong. Common mistakes include:
- Missing deadlines: The IRS may decide the case without your evidence.
- Sending disorganized paperwork: Unlabeled receipts can lead to items being disallowed.
- Misreading the rules: Many deductions require specific documentation.
- Agreeing too quickly: Signing an agreement form can lock in tax you don’t owe.
- Missing appeal windows: Appeals and Tax Court deadlines are strict.
Why Explaining Too Much Can Create Problems
Volunteering extra documents, answering questions that weren’t asked, or guessing at answers can give the examiner reasons to raise new issues or expand the audit to other years. A professional knows how to answer exactly what’s asked and stop there.
When Should You Hire IRS Audit Representation?
Some audits carry more financial or legal risk than a do-it-yourself response can safely handle. If any of these situations apply, get professional help before you respond.
The IRS Is Questioning Business or Self-Employment Income
Business audits often examine gross receipts, bank deposits, vehicle and home office expenses. Examiners may rebuild your income from bank records and treat unexplained deposits as taxable income. Small errors across many transactions can add up to a large adjustment.
Large Deductions or Credits Are Being Challenged
When a large deduction or a refundable credit like the Earned Income Tax Credit is questioned, the dollars at stake rise quickly. A professional can find the right documentation and cite the rules that support your position.
The Audit Covers Multiple Tax Years
Multi-year audits multiply adjustments, penalties and interest. The IRS may also ask you to sign Form 872 to extend its time to assess tax, a strategic decision best made with advice.
You Cannot Find the Documents the IRS Wants
Missing receipts don’t automatically mean you lose. Bank statements, third-party records and reasonable reconstructions can often fill the gap, and a representative knows which substitute evidence the IRS accepts.
You Expect a Large Tax Assessment
If the potential bill would be hard to pay, representation often costs far less than what’s at stake. A representative can work to reduce the adjustment, request penalty relief, and plan for payment options if needed.
You Are Worried About Fraud or Criminal Exposure
If you left income off your return or the examiner starts asking about your intent, stop talking to the IRS and speak with a tax attorney. Warning signs include:
- The examiner suddenly suspends the audit without explanation
- Questions shift from your records to what you knew or intended
- A special agent from IRS Criminal Investigation contacts you
Do I Need a Lawyer for an IRS Audit?
Not always. The right professional depends on the risk involved, and a CPA or enrolled agent is often fully qualified.
Who Can Represent You Before the IRS
Attorneys, CPAs and enrolled agents (EAs) can represent taxpayers before the IRS on any tax matter. Most other preparers have limited rights or none. You authorize a representative by signing Form 2848, Power of Attorney.
When a CPA or Enrolled Agent May Be Enough
For most civil audits, where the question is whether an item on your return was correct, a CPA or EA is well qualified. They handle documentation, deduction rules and IRS examiners every day.
When an Attorney Is the Better Choice
An attorney matters most when there’s a risk of civil fraud penalties, which can reach 75% of the underpayment, or criminal investigation. The confidentiality privilege for CPAs and EAs doesn’t apply in criminal matters, while attorney-client privilege does. An attorney also helps if your case may go to Tax Court.
| Advisor’s Take: The real question is which professional fits the risk. A firm with attorneys, CPAs and enrolled agents under one roof can start with the right person and bring in an attorney if the case calls for one. |
IRS Audit Letter: Respond Yourself vs. Hire Help
If you’re still unsure, compare your situation against the factors below. Even one high-risk factor can change the answer.
| Factor | Respond Yourself | Hire Help |
| Audit type | Correspondence audit | Office or field audit |
| Issues | One or two simple items | Business income or multiple issues |
| Records | Complete and organized | Missing or incomplete |
| Tax years | One year | Multiple years |
| Amount at stake | Small | Large |
| Fraud or criminal concerns | None | Any |
If even one factor falls in the right column, getting help responding to an IRS audit before you send anything is a smart move.
What Happens After You Respond to the IRS Audit?
After the IRS reviews your response, the audit usually ends in one of a few ways. Knowing each outcome helps you avoid giving up rights you may need later.
The IRS Accepts Your Return as Filed
If your documents support your return, you’ll receive a no-change letter, and the audit will close. Keep it with your tax records.
The IRS Proposes Changes
If the examiner disagrees with some items, you’ll receive a report, usually Form 4549. You can agree and pay or set up a payment plan, partly agree, or disagree. Don’t sign if you disagree, since signing generally gives up your right to go to Tax Court before paying.
Disagreeing: IRS Appeals, Tax Court, and Audit Reconsideration
If you disagree with the results, you have several paths:
- Talk to the manager: A supervisor can sometimes resolve disputes quickly.
- IRS Independent Office of Appeals: Request an appeal within the time stated in your 30-day letter.
- U.S. Tax Court: Petition within 90 days of a notice of deficiency, without paying first.
- Audit reconsideration: Ask the IRS to reopen an assessed audit when you have new information.
Also Read: How IRS Appeals Evaluates Your Case: A Former IRS Agent Explains
How IRS Audit Representation Can Protect Your Interests
Hiring a representative isn’t only about paperwork. A qualified professional protects your rights, controls the flow of information and pushes for an accurate result.
Communicating With the IRS for You
With a signed Form 2848, your representative receives your IRS notices and handles calls, letters and meetings. Responses go out complete and on time, and you won’t have to answer unexpected questions on the spot.
You May Not Have to Meet the Auditor Yourself
Your representative can usually attend audit meetings without you, unless the IRS issues a summons. If you’re in an interview, you generally have the right to pause it to consult a representative.
Reviewing the IRS’s Position and Presenting Evidence
A representative checks whether the examiner is applying the law correctly and whether the figures add up, then presents your records as a clear, issue-by-issue response.
Challenging Incorrect Proposed Adjustments
While the audit is still open, a representative can push back on unsupported adjustments and request penalty relief. Resolving disputes at this stage is usually faster and cheaper than going to Appeals or Tax Court.
How Sullivan 4 IRS Matters Can Help With Your Audit
Sullivan 4 IRS Matters is led by former IRS Agent Michael D. Sullivan and backed by a team of tax attorneys, CPAs, enrolled agents, and former IRS agents. People who know how the IRS examines returns handle your audit, and the team can match the right professional to your situation, including an attorney when legal protection matters.
Here’s how the team supports you:
- Audit letter review: They confirm what the IRS wants and explain your deadline and options.
- Response preparation: They build a clear, complete response limited to the items under review.
- Direct IRS communication: With your authorization, they deal with the examiner so you don’t have to.
- Former IRS insight: Their experience inside the IRS helps them anticipate what examiners look for.
- Challenging proposed changes: They can dispute adjustments, pursue appeals or request audit reconsideration.
- Attorney support when needed: Tax attorneys on the team can step in if fraud or criminal risk appears.
If you’ve received an audit notice, reach out for IRS audit defense help and a free consultation before you respond.
Final Thoughts
An IRS audit letter is serious, but it’s manageable if you act early and respond carefully. Whether to handle it yourself depends on how complex your issues are and what’s at stake.
If it’s a simple correspondence audit and your records are solid, you may be able to respond on your own. If business income, large amounts, multiple years, missing records, or criminal risk are involved, professional IRS audit representation can protect both your rights and your finances.
Received an IRS audit letter? Get help with an IRS audit today. Contact Sullivan 4 IRS Matters for a free consultation before you respond.
FAQs
Confirm the letter is real, note the tax year and deadline, and identify exactly what the IRS is asking for. Send organized copies of supporting records by a trackable method, and talk to a professional first if the issues are complex.
Not always. A CPA or enrolled agent can handle most civil audits. Speak with a tax attorney if there’s any risk of fraud or criminal charges.
Generally, three years from when you filed, or six years if you left out more than 25% of your income. There’s no limit for fraudulent or unfiled returns.
Simple correspondence audits often wrap up within a few months. Office and field audits, especially for businesses or multiple years, can take a year or longer.
Usually not. With a signed Form 2848, your representative can attend meetings for you unless the IRS issues a summons.
It can. A representative can find supporting evidence, challenge unsupported adjustments, request penalty relief and take your case to Appeals. No result is guaranteed, but a well-prepared response usually leads to a better outcome.
