What Happens in a Tax Audit

The short answer: an audit is a records check

A tax audit is the IRS checking parts of a tax return and asking, "Can you show how you got these numbers?" For many people, that means letters, deadlines, and requests for proof such as W-2s, 1099s, receipts, bank statements, mileage logs, payroll records, or bookkeeping reports.

Most audits are not dramatic in-person meetings. Many are handled by mail. Some happen at an IRS office. A smaller number happen at a home, business, or accountant's office. The IRS may look at one issue, like a tax credit or business expense, or at a larger part of the return.

If you are an individual, the questions may be about income, dependents, filing status, deductions, or credits. If you run a small business, the questions may be about income reporting, contractor payments, meals, vehicle use, payroll, home office, or whether expenses were personal or business.

If you feel lost, that is normal. A licensed accountant can help you understand the notice, the records request, and the response process. BalancedRow is a free matching service. We do not give tax advice or represent you before the IRS. We help you get connected with a licensed CPA or IRS Enrolled Agent you can verify yourself. If you want help finding someone, start here: get matched.

How an audit usually starts and what the IRS may ask for

The process often begins with a notice by mail. Read it slowly. The notice usually tells you:

• Which tax year is being reviewed
• What items the IRS wants to verify
• What documents they want to see
• How and when to respond
• Whether the audit is by mail, at an office, or in person

Common records the IRS may ask for include:

• W-2s, 1099s, K-1s, and brokerage tax forms
• Bank and credit-card statements
• Invoices, receipts, and canceled checks
• Mileage logs and calendars
• Bookkeeping reports such as profit and loss statements
• Payroll reports and payroll tax filings
• Lease agreements, loan statements, and asset purchase records
• Proof for dependents, education costs, childcare, or health coverage items

For small-business owners, one big issue is whether the records clearly connect the expense to the business. A charge on a bank statement alone may not be enough. The IRS may want to know what was bought, when, why it was for the business, and how the amount was calculated.

You do not want to ignore a notice or guess your way through a response. If your books are messy, or you are not sure what belongs in the response package, consider finding a verified professional through small-business accounting or tax preparation.

Important: never send original documents unless the notice specifically says to. Keep copies of everything you send, and note the date and method you used.

What the different kinds of audits look like

There are a few common formats.

1. Correspondence audit
This is the most common type. It happens by mail. The IRS asks for proof of specific items. You mail or upload copies of records. This can be manageable if the issue is narrow and your paperwork is good.

2. Office audit
You are asked to bring records to an IRS office. These audits often cover more than one item. Organization matters. So does answering only what was asked, with support.

3. Field audit
This is more serious and more detailed. The IRS may visit a business, home, or representative's office. For a business owner, this can involve bookkeeping, payroll, bank deposits, expense categories, and how income was tracked.

What can happen at the end?

• The IRS accepts the return as filed
• The IRS proposes changes and you agree
• The IRS proposes changes and you disagree
• The IRS asks for more records or expands the review

If changes are proposed, that does not mean you must automatically accept them. You may have the right to ask questions, provide more support, or appeal. See taxpayer rights for a plain-English overview.

A practical point: audits often become harder because people respond emotionally instead of methodically. A calm, complete response backed by records is usually more useful than a long explanation with no proof.

What to do if you get an audit notice

Use this checklist.

1. Open the notice and check the deadline
Do not put it aside. Deadlines matter.

2. Read what year and what issues are involved
An audit may be limited to only a few lines on the return.

3. Pull records before you reply
Gather the exact documents requested. Sort them by issue and date.

4. Do not send more than necessary
Answer the question asked. Extra documents can create extra questions.

5. Write a simple cover letter if needed
Label the documents clearly. Keep your explanation short and factual.

6. Keep copies of everything
Save a full copy of the notice, your response, and proof of delivery.

7. Consider professional help early
If the notice involves business income, payroll, missing records, multiple years, or a large amount of tax, it can be smart to hire a licensed CPA or IRS Enrolled Agent.

If you decide to hire help, protect yourself:

• Verify the credential and PTIN yourself through the IRS Directory of Federal Tax Return Preparers or the person's state board of accountancy
• Confirm the scope and fee in writing before any work starts
• Ask whether the fee is hourly, fixed for a defined task, or estimated in stages
• Keep your SSN, ITIN number, bank login, and tax documents private until you have verified who you are dealing with

BalancedRow collects only contact and request details so we can help you compare options. We do not collect SSNs, ITIN numbers, financial-account numbers, or tax documents. If you want to compare professionals, you can learn how to choose an accountant.

What help usually costs and what to ask before you hire

Audit help is not one set price. The real fee depends on the work involved, your situation, how organized your records are, whether bookkeeping must be cleaned up, and where you live.

Typical ranges people may see:

• Hourly CPA or EA help: often about $150-$400 per hour
• Simple response to a narrow IRS notice: may be a few billed hours if records are organized
• Business audit support: can cost much more if bookkeeping needs repair, payroll issues are involved, or several years are under review
• Bookkeeping catch-up before a response: often separate from audit support; monthly bookkeeping itself often runs $150-$600 per month depending on volume

Those are estimates, not quotes or guarantees. Always ask:

• What work is included in this fee?
• What work is extra?
• Who will handle my case?
• What documents do you need from me first?
• How do you bill if the IRS asks follow-up questions?

If your records are messy, it may help to ask about bookkeeping support first so the numbers can be organized before a response is prepared.

The big picture is simple: the sooner you understand the notice and get organized, the more options you usually have.