Estate Tax Penalties and Reasonable Cause

An estate that owes $2,000,000 in estate tax and files four months late without an extension has a failure-to-file penalty of $400,000 before anyone has argued about anything. That is the math of percentage penalties on large estates. It is also why the reasonable cause standard matters so much in estate practice.

The penalties that apply

Failure to file, IRC 6651(a)(1). Five percent of the net tax required to be shown on the return for each month or part of a month the return is late, up to 25 percent. The automatic six-month extension on Form 4768 avoids it, if requested by the nine-month due date. See Form 706 deadlines and extensions.

Failure to pay, IRC 6651(a)(2). One-half of one percent per month on unpaid tax shown on the return, up to 25 percent. An extension to file does not stop it. An approved extension of time to pay under IRC 6161 or a section 6166 election does, for the extended amount.

Failure to pay additional tax, IRC 6651(a)(3). Applies to amounts assessed later, such as after an audit, that are not paid within 21 days of notice and demand (10 business days if the amount is $100,000 or more).

Accuracy-related penalty, IRC 6662. Twenty percent of an underpayment attributable to negligence or other listed causes. For estate and gift tax, IRC 6662(g) defines a substantial valuation understatement as a value claimed of 65 percent or less of the correct value. IRC 6662(h) doubles the rate to 40 percent for a gross valuation misstatement, at 40 percent or less of the correct value. The valuation penalties only apply when the underpayment attributable to the understatement exceeds $5,000. See estate valuation disputes.

Fraud, IRC 6663. Seventy-five percent of the portion of an underpayment attributable to fraud. Rare in estate cases, but it exists.

Interest under IRC 6601 runs on unpaid tax from the due date and on penalties as provided by statute. Interest is generally not abated for reasonable cause.

No first-time abatement here

For individual income tax, the IRS's first-time abate waiver relieves many first offenders of filing and payment penalties without any showing of cause. Executors who have used it on their own returns assume it applies here too. It does not.

IRM 20.1.1.3.3.2.1, First Time Abate (FTA), says the waiver does not apply to returns with an event-based filing requirement, which it describes as generally returns filed once or infrequently. It then lists examples of returns where FTA relief is not applicable, starting with Form 706, U.S. Estate Tax Return, and Form 709, United States Gift (and Generation-Skipping Transfer) Tax Return. That makes sense: an estate files one estate tax return, so there is no compliance history for the waiver to reward. For estate and gift tax penalties, the estate needs reasonable cause, statutory relief, or an IRS error.

The reasonable cause standard

For the 6651 penalties, Treas. Reg. 301.6651-1(c)(1) asks whether the taxpayer exercised ordinary business care and prudence and was nevertheless unable to file or pay on time. For late payment, the regulation also considers whether payment on the due date would have caused undue hardship. For the accuracy penalties, IRC 6664(c)(1) provides relief where there was reasonable cause and the taxpayer acted in good faith.

IRM 20.1.1.3.2.2 discusses the circumstances the IRS considers, including:

• Death, serious illness or unavoidable absence of the taxpayer or someone responsible for the return, or a member of their immediate family.
• Inability to obtain records, if the taxpayer explains why records were needed, what steps were taken, and why estimates were not used.
• Fire, casualty, natural disaster or other disturbance. Southwest Florida executors know that hurricanes can shut down offices and destroy records.

The IRS also looks at what happened after the obstacle ended. Prompt compliance once the problem cleared is evidence of good faith. Months of drift afterward undercuts it.

Reliance on professionals

This is where estate penalty cases are won and lost.

IRM 20.1.1 states that reliance on another person to perform a required act, such as filing a return on time, generally does not establish reasonable cause, because the responsibility to file and pay cannot be delegated. An executor who hired a law firm that missed the Form 706 deadline will have a hard time getting the late-filing penalty removed on that basis alone.

Reliance on substantive advice is different. If a qualified advisor told the executor that no return was required, or advised on a valuation position, and the executor gave the advisor complete information and reasonably relied on the advice, that can support relief. Treas. Reg. 1.6664-4 describes the factors for the accuracy penalties, and reliance on a qualified appraisal is a recognized element in valuation cases.

The lesson for executors: calendar the deadlines yourself. You can delegate the work. You cannot delegate the date.

Building the request

A reasonable cause request for an estate is a short legal brief with exhibits. A strong one:

1. States the penalty, the amount, and the tax period.
2. Gives a clear chronology: date of death, appointment, discovery of assets, the event that caused the delay, and when it was resolved.
3. Explains why ordinary business care and prudence could not have prevented the failure.
4. Shows prompt compliance once the obstacle ended.
5. Attaches support: medical records, hospitalization dates, correspondence with institutions that delayed records, appraisal engagement letters, disaster declarations.

Requests go to the IRS function that assessed the penalty. If it is denied, the estate can generally request Appeals consideration, and the penalty can be contested in Tax Court where the deficiency procedures apply. The getirshelp.com page on IRS penalty abatement covers the general request process.

Facts that tend to work, and facts that do not

From the IRS's own framework, some patterns are predictable.

• Usually helpful: the executor was hospitalized during the months before the deadline; a co-executor died; a hurricane closed the office holding the records; a financial institution refused to release date-of-death values despite documented requests; a court dispute over who would serve as executor delayed appointment.
• Usually not enough: the attorney or CPA missed the date; the executor was busy or grieving without more; the executor did not know a return was due; the estate was waiting on an appraisal it ordered late; the family could not agree on values.

Grief is real. But the IRS expects an executor to get help, file the automatic extension, and pay what can be paid. Requests that show those steps were taken, and explain why they were still not enough, get a much better hearing.

Gift tax penalties

The same penalties apply to Form 709, and the same rules on first-time abatement and reasonable cause. For most late gift tax returns, the tax required to be shown is zero because the lifetime exclusion covers it, so the percentage penalties compute to zero as well. See unfiled and late gift tax returns.

Penalties are paid by the estate

Penalties assessed against the estate are paid from estate assets. They can affect what the beneficiaries receive and, in an insolvent estate, whether other creditors get paid at all. An executor whose own neglect caused a large penalty may face questions from the beneficiaries in probate court. That is a state law matter, but it is another reason to take the deadlines seriously from day one.

One procedural safeguard is worth checking. Under IRC 6751(b), the initial determination of many penalties, including the accuracy-related penalty under IRC 6662, must be personally approved in writing by the examiner's immediate supervisor. The statute exempts the failure-to-file and failure-to-pay penalties under IRC 6651. When an accuracy or valuation penalty is proposed, ask for proof of that approval.

If an estate has been hit with filing, payment or valuation penalties, call (813) 229-7100. Let's talk.