Audits and Tax Controversy

What an Audit Is — and Why Complex Returns Attract More of Them

A tax audit is a formal review by a taxing authority — most often the IRS, but also state revenue departments — of a filed return. The examiner's goal is to determine whether reported figures are accurate and whether the legal positions taken are supportable. Most returns are never examined; selection can be triggered by statistical screening, mismatches with third-party information (such as a Schedule K-1 from a partnership), or issues identified on a prior return.

Families whose returns include multiple trusts, partnership interests, private fund investments, foreign accounts, or significant charitable activity tend to have returns that are longer, more complex, and more likely to contain items that invite questions. This is not a sign of wrongdoing — it is simply a reflection of complexity. As discussed in Complexity, Not Net Worth, Drives Structure, the challenge of managing a substantial estate is largely a management challenge, and that extends to compliance.

Types of Examination: Correspondence, Office, and Field

Not every audit is a dramatic multi-year ordeal. Tax examinations generally fall into three categories, each more intensive than the last.

• Correspondence audit: The IRS or state authority sends a letter requesting documentation for one or a few specific items — a charitable deduction, a business expense, a reported loss. These are resolved by mail and are often straightforward when records are well-organized.
• Office examination: The taxpayer (or, far more practically, a representative) meets with an examiner at a local IRS office. These typically address a broader set of issues than a correspondence audit.
• Field examination: A revenue agent comes to the taxpayer's home, business, or — most commonly — the office of the taxpayer's accountant or attorney. Field exams are the most comprehensive and are most likely for returns involving substantial business interests, significant real estate activity, or complex estate and gift tax positions. Multi-year field exams are not unusual for families with substantial wealth.

State examinations follow similar patterns and can run concurrently with a federal audit. Families who live in, or have recently moved from, high-tax states may also encounter examinations focused specifically on residency — a topic explored in State Residency and Domicile.

Why You Speak Through a Representative — and What Privilege Protects

One of the most important principles in any audit is this: taxpayers almost never benefit from speaking directly with examiners. A trained representative — a CPA, enrolled agent, or tax attorney — speaks on the taxpayer's behalf, controls the flow of information, and knows which questions an examiner is and is not entitled to have answered. An off-the-cuff remark by a well-meaning family member can introduce new issues the examiner had not originally intended to pursue.

Two legal doctrines shape what information must be produced. Attorney-client privilege protects confidential communications between a taxpayer and their attorney made for the purpose of obtaining legal advice. Work product doctrine protects materials prepared by an attorney in anticipation of litigation. These protections are real but have limits — they generally do not protect accountants' work product in the same way, and they do not shield underlying facts, only the communications about them. A qualified attorney can explain what is and is not protected in a specific situation.

For families navigating a serious examination, the choice of representative matters enormously. The considerations involved in selecting the right professionals are covered in Choosing Estate Attorneys and CPAs.

Records, Documentation, and the Statute of Limitations

The IRS generally has three years from the filing date to assess additional tax on a return. That window extends to six years if income was substantially underreported, and there is no statute of limitations at all if a fraudulent return was filed or if no return was filed. States have their own statutes, which vary. This means that records need to be retained — and retrievable — for meaningful periods of time.

For families with complex holdings, "records" means considerably more than bank statements. Partnership agreements, appraisals supporting charitable deductions or valuation discounts, closing documents on real estate transactions, cost basis records for investments held across decades, and documentation supporting domicile claims — all of these are potentially relevant. Digital storage has made retention easier, but organization and the ability to reconstruct a logical narrative around any position are what make records useful under examination.

The burden of proof in most civil tax disputes rests with the taxpayer. Good contemporaneous documentation — created at the time of a transaction, not reconstructed afterward — carries far more weight than after-the-fact explanations.

Penalties, Interest, and the Reasonable-Cause Defense

If an examination results in additional tax owed, interest accrues from the original due date of the return, not from the date of the audit finding. Interest is not waivable. Penalties are a separate matter and come in several forms:

• Accuracy-related penalty: Applies to underpayments attributable to negligence, disregard of rules, or a substantial understatement of income tax.
• Civil fraud penalty: A significantly higher penalty reserved for cases where the IRS concludes the underpayment was intentional.
• Failure-to-file and failure-to-pay penalties: Apply when returns are not filed or taxes not paid on time — topics addressed in Estimated Taxes and the Compliance Calendar.
• Information return penalties: Increasingly significant for families with foreign accounts, international structures, or foreign gifts, where specific reporting forms are required.

The most important defense against accuracy-related penalties is reasonable cause — a showing that the taxpayer acted in good faith and exercised ordinary care. Reliance on the advice of a qualified professional who was given complete and accurate information can support a reasonable-cause defense. This is one reason why the quality and completeness of information provided to advisers matters so much, and why positions taken on complex returns are typically documented with legal opinions or tax advice memoranda at the time they are adopted.

Appeals, Settlement, and Litigation

An audit that produces findings the taxpayer disagrees with does not end at the examiner's desk. The IRS has an independent Office of Appeals, which offers a more informal forum for resolving disputes without litigation. Appeals officers have settlement authority and often take a practical, hazards-of-litigation view of contested issues — meaning they weigh the probability that either side would prevail in court.

If Appeals does not produce a satisfactory outcome, taxpayers can take their case to the U.S. Tax Court (without paying the disputed tax first), the U.S. District Court, or the U.S. Court of Federal Claims (both of which require paying the tax and suing for a refund). Tax Court is the most common forum for individual income and estate tax disputes. Litigation is expensive, time-consuming, and public — court filings become part of the public record — factors that weigh heavily for families accustomed to privacy.

The Habits That Make Audits Manageable

The families who navigate audits most smoothly are typically those who treated their tax compliance as a year-round discipline, not an annual sprint in April. A few habits that tax professionals often observe make a material difference:

• Maintaining an organized, centrally accessible repository of supporting documents for every significant item on every return.
• Documenting the business purpose of transactions — especially related-party loans, compensation arrangements, and charitable contributions — at the time they occur.
• Ensuring that appraisals required for charitable deductions or valuation discounts are obtained from qualified appraisers and completed on time.
• Reviewing draft returns carefully before signing, so that the taxpayer understands every significant position being taken.
• Keeping professional advisers fully informed — a representative cannot defend a position they did not know the taxpayer had taken.

None of this eliminates audit risk, which is ultimately not entirely within any taxpayer's control. What it does is ensure that, if a question does arrive, the answer is already organized and credible.