Opening summary

When the IRS requests documents, your goal is to answer the specific items in the notice, provide supporting evidence in an organized format, and document the chain of custody for what you submit. Meeting the deadline and making it easy for the examiner to verify facts often shortens the audit and reduces the chance of an adverse finding.

Key documents to include

  • Cover letter: One-page cover letter that identifies the taxpayer (name, SSN or EIN last four digits), the IRS notice number, the tax year under review, and a brief list of enclosures. State a point of contact and whether a representative (CPA, EA, or attorney) is acting on your behalf (include Form 2848 if applicable). See Form 2848 (Power of Attorney) for representation rules (IRS).
  • Index/table of contents: A numbered list that maps each appendix or tab to a specific issue on the notice.
  • Requested records: Provide only the records the IRS requested first, organized to match line items in the notice (e.g., income, specific deductions). Typical items: W‑2s, 1099s, bank statements, deposit slips, invoices, sales records, canceled checks, contracts, receipts, mileage logs, and payroll reports.
  • Reconciliations and summaries: Short spreadsheets or one‑page reconciliations that reconcile totals (for example, bank statement deposits to reported gross receipts). Label columns clearly and highlight the rows that resolve the IRS’s question.
  • Prior tax returns and amended returns: Copies of the returns for the year under audit and any supporting schedules; provide amended returns only if you are proactively correcting an error and you understand potential implications.
  • Proof of basis and receipts for asset transactions: Bills of sale, settlement statements, depreciation schedules, and Form 8949/1099‑B support for sales of investments.
  • Third‑party correspondence: Letters from customers, vendors, or financial institutions that corroborate transactions, if relevant.

How to organize your packet

  • Use a clear cover letter and a short executive summary that ties each group of documents to the IRS’s specific questions. Avoid burying explanations in long narrative letters — the examiner wants to see documents mapped to issues.
  • Tab or bookmark everything: physical tabs for paper packets; bookmarked PDF and a bookmarked table of contents for electronic submissions.
  • Submit copies, not originals: Keep original records in your files. If the IRS requests originals, ask for a written request and provide copies first unless specifically instructed otherwise.
  • Redact sensitive unrelated data: Where practical, redact unrelated SSNs and financial account numbers but not the taxpayer’s SSN/EIN when required for identification.
  • Label exhibits: Exhibit A, Exhibit B, etc., and reference those exhibit labels in your cover letter and the table of contents.

How much explanation to include

  • Be concise and direct. For each issue, add a one‑paragraph explanation (2–5 sentences) stating why the attached documents resolve the discrepancy. Use numbered references (e.g., “See Exhibit 3, bank deposits on April–June”) so the examiner can follow quickly.

Submission methods and proof of delivery

  • Match the method requested on the audit notice. Correspondence audits are usually handled by mail; office or field audits may request in‑person or virtual meetings.
  • Certified mail with return receipt or delivery via a signed tracked courier is recommended for paper packets. If your practitioner submits electronically, obtain a confirmation of receipt.
  • Keep a copy of everything submitted and record the date and method of delivery.

Deadlines and timing

  • Always check the specific deadline on the notice. Typical correspondence audit responses often expect a reply within 30 days, but deadlines vary. If you need more time, request an extension in writing before the deadline explaining why and providing a date by which you will submit.

When to involve a professional

  • Engage a CPA, enrolled agent, or tax attorney when the audit involves large amounts, complex transactions (e.g., business cost segregation, stock sales, international items), or potential criminal exposure. A qualified practitioner can submit Form 2848 to represent you and communicate directly with the IRS. See our guide on when to add a tax practitioner When a Tax Practitioner Should Be Added to Your Audit Team.

Common pitfalls to avoid

  • Don’t send a large, unindexed box of documents without a map to the notice items.
  • Don’t alter documents; provide authentic source records and a short explanation where needed.
  • Don’t miss the deadline — missing it can result in automatic adjustments and penalties.

Sample short cover letter (use on your letterhead)

[Date]
Internal Revenue Service
[Address from notice]

Re: Taxpayer Name — Last four of SSN/EIN: 1234; Tax Year: 20XX; Notice #: ABC‑123

Enclosed please find the documents requested in your letter dated [date]. The enclosed items are tabbed and indexed to correspond with the points raised in your notice. Exhibit 1 addresses the questioned wage income; Exhibit 2 contains bank statements and reconciliations for reported business receipts.

Contact: [Your name], [phone], [email]. If you are represented, list the representative and include Form 2848.

Sincerely,
[Signature]

Records retention and follow‑up

  • Keep all records related to the audit for at least three years after the date you file the return, or longer if advised by counsel (see IRS Publication 552 on recordkeeping). Provide prompt responses to follow‑up requests and keep notes of all communications (date, name, and summary of what was discussed).

Additional resources

Related FinHelp guides

Professional note and disclaimer

I have 15 years of experience advising taxpayers through IRS examinations; organizing evidence to match the IRS’s issues usually reduces back‑and‑forth and the risk of proposed adjustments. This article is educational and does not replace personalized tax advice. Consult a qualified tax professional for guidance tailored to your situation.