Key takeaway: Identify the notice, tax periods, requested issues and deadlines first. Preserve the original records, organize the relevant evidence, and explain how it connects to the return. Keep a copy of every submission and confirmation of delivery.
An audit asks whether the return is correct. An orderly file helps you explain the facts, but it does not guarantee acceptance of a deduction or a particular result. Start with the actual request so the work addresses the examination.
Protect the response deadline first
Save the notice and envelope, identify the examiner and contact instructions, and record the response date. The IRS audit guidance explains that examinations begin with mailed notification and may proceed by correspondence or interview. The IRS supplies a written request for specific documents.
If you need more time, request it through the process for that examination before the due date and confirm the outcome. An extension to supply documents does not automatically extend an appeal or Tax Court deadline. Do not wait for every record or for a new representative to be hired before addressing an approaching deadline.
Answer the actual requests accurately and completely. If scope, relevance or privilege is in question, raise that with your representative and the examiner rather than ignoring the request or silently withholding required information. Keep a log of requests, responses, agreed extensions and unresolved items.
Preserve the original return and accounting records
Keep the filed return, schedules, amendments, workpapers and existing accounting records in their original form. Create a separate working folder for summaries, reconciliations and explanations. Do not overwrite the historical records to make them appear to agree with the return.
The IRS records-request guidance says to send copies when mailing records and to organize evidence by year and type, with transaction summaries and surrounding facts. A bank statement may show a payment without establishing its business purpose; an invoice may describe a purchase without establishing the correct tax year or deduction.
Match the requested issue to its supporting records
This is a practical organizer, not a claim that every audit requests every item.
| Issue | Potential records | Connection to explain |
|---|---|---|
| Return and book totals | Filed return, trial balance, general ledger, statements and adjustment workpapers | How book amounts reconcile to the reported tax amounts |
| Income and deposits | Invoices, contracts, customer receipts, processor reports, refunds, receivables and bank records | Sales, collections, timing differences and deposits from other sources |
| Expenses | Vendor invoices, receipts, agreements, business-purpose evidence and relevant payment or accrual support | Amount, business connection, classification and timing |
| Travel, meals and vehicles | Trip logs, dates, destinations, business purpose, itemized records and applicable mileage totals | The specific substantiation requirements for the claimed expense |
| Payroll and workers | Payroll registers, returns, deposits, wage statements, contracts and classification facts | Wages, withholding, employer taxes and worker treatment |
| Assets, inventory and financing | Acquisition and service dates, invoices, depreciation schedules, counts, cost records, notes and disposals | Basis, cost recovery, inventory cost and debt activity |
| Entity and owners | Formation documents, tax elections, ownership history, basis schedules, contributions, distributions and loans | The tax classification and character of owner transactions |
| IRS communications | Notices, document requests, responses, authorization records and delivery confirmations | What was requested, supplied and still outstanding |
For related guidance, our article on Collection Due Process Hearings walks through this in “Collection Due Process Hearings: Documents That Support Your Position.”
Separate cash movement from taxable income and deductions
IRS Publication 538 explains that cash-method taxpayers generally recognize income when actually or constructively received and deduct qualifying expenses when paid, subject to capitalization and other rules. Accrual-method deductions generally require a fixed liability, a reasonably determinable amount and economic performance, with special timing rules and exceptions. An unpaid expense is not automatically disallowed under an accrual method; a paid purchase is not automatically a current deduction.
For example, a hypothetical bank reconciliation could show $112,000 of deposits consisting of $80,000 of customer collections, $20,000 of genuine loan proceeds, a $5,000 owner capital contribution and a $7,000 transfer from another business bank account. Those four categories explain the deposits; they are not $112,000 of sales. Support each category with its source records. Customer collections still need analysis under the applicable income-recognition rules, and processor deposits may be net of fees.
For a hypothetical accrual-method business, an unrelated vendor completes repair services in December and bills $2,000. The bill may support a December expense even if paid in January, assuming the deduction and timing tests are met. Keep the service evidence, invoice and liability record, along with the later payment. Payment support does not replace the accrual analysis.
Explain differences between financial-statement income and taxable income, such as different depreciation or nondeductible costs, rather than forcing the totals to match. Owner distributions, loan principal and transfers between accounts also require their own classifications. Use a reconciliation with clearly labeled adjustments.
Create a short, traceable document index
For each requested item, record the request number, tax year, return line or issue, document references, amount and status. An example entry could read: “Request 3 — advertising expense — invoices A01–A12 and payment records P01–P12 — $14,200 — reconciled to ledger account 6100.” If one receipt remains missing, mark the item incomplete and identify the gap instead of labeling it complete.
Number the supporting files consistently and retain the source records behind each summary. Check dates, arithmetic, duplicates and explanations before sending. Store a copy of the exact package sent, the submission date and the delivery confirmation. An internal working draft should not be mistaken for evidence already supplied.
Handle missing records honestly
Seek vendor duplicates, bank or card records, contracts, appointment records and other corroboration. A good-faith reconstruction should state when it was prepared, what sources it uses and which facts remain uncertain. Preserve the remaining originals. Do not fabricate receipts, backdate a newly prepared log or create a replacement ledger presented as the original.
Different deductions require different evidence. For vehicle and other expenses covered by Treasury Regulation 1.274-5T, unsupported approximations are insufficient; the rules address corroborating evidence and reconstruction after loss beyond the taxpayer’s control. A representative can evaluate the available evidence and explain limitations without promising that a substitute will be accepted.
Agree on electronic-file production
Use the examiner’s confirmed delivery method and acceptable format. The IRS electronic-accounting-records guidance explains that a request can include a software backup, not merely printed reports. A recreated file or selected spreadsheet exports may not satisfy a request for the original books of entry.
Discuss technical access, sensitive information and any privilege concerns before production. Preserve the source file and do not alter or condense it without resolving what the request permits. Restrict internal working-file access to the people handling the response and maintain a retrievable backup.
Retain records beyond the immediate response
The IRS retention guidance gives a general three-year income-tax support baseline after filing, with an early return treated as filed on its due date. Exceptions include six years for specified substantial income omissions, seven years for worthless-security or bad-debt loss claims, and indefinite retention for unfiled or fraudulent returns. Refund claims can require three years after filing or two after payment, whichever is later. Employment-tax records generally require four years after the tax becomes due or is paid, whichever is later.
Keep property and basis records through the relevant limitation period after disposition. An active audit, appeal, litigation, agreed extension, state rule or other requirement may require longer retention. Keep filed returns for reference and preserve the audit file until all related obligations and retention needs are resolved.
This connects to Business Succession Tax Records — see “Business Succession Planning: Tax Records to Organize Early” for the details.
Define representation and next steps
You may represent yourself or engage an eligible representative. Form 2848 and its instructions describe authorization for specified tax matters and periods. Signing a form alone does not make an otherwise ineligible person authorized to practice, and tax representation does not automatically include court representation.
If you want help assessing the notice and records, contact CPA Firm South Florida to confirm scope, responsibility and fees. Bring the notice, the deadline, relevant returns and a list of missing records. Consistent monthly reconciliation and document capture can make information easier to retrieve; no routine guarantees that an audit will take a particular number of days.
We cover Field Audits for Small Businesses in a companion article, “Field Audits for Small Businesses: Records and Interview Preparation.”
Frequently asked questions
Must every deductible expense already be paid?
No. Timing depends on the tax accounting method and the type of expense. Cash-method deductions generally require payment; accrual deductions require the applicable liability and economic-performance tests, with special rules and exceptions.
What should I do if an original record is missing?
Identify the gap, seek duplicates or other corroborating evidence, and clearly label any reconstruction with its preparation date, sources and limitations. Do not fabricate or backdate evidence. Some expenses have strict substantiation rules.
Can I wait to respond until I hire a representative?
Do not let the deadline pass while arranging help. You may contact the IRS yourself and request additional time through the instructions on the notice when available. Confirm any extension; it does not automatically extend a court or appeal deadline.
Can I submit digital records?
Discuss the acceptable format and delivery method with the examiner. Complete, readable copies can be useful, but selected PDF or spreadsheet reports may not satisfy a request for an original accounting-software backup.