Reaching retirement age brings a wave of new financial rules, and one of the most critical is the Required Minimum Distribution (RMD). Once you hit a certain age, the IRS mandates that you begin withdrawing a minimum amount from your traditional IRAs, 401(k)s, and other tax-deferred retirement accounts each year. But what happens if you simply forget, miscalculate, or miss the deadline?

Missing an RMD can result in a steep IRS excise tax. However, the situation isn't always hopeless. If you correct the mistake promptly and can prove the failure was due to a reasonable error, the IRS might waive the penalty entirely.

What Exactly Is a Missed RMD?

A missed RMD is essentially a failure to comply with the IRS's withdrawal schedule. This occurs when a taxpayer:

  • Fails to withdraw the full required minimum distribution by the applicable deadline (typically December 31st for most years, though the first RMD has a slightly extended deadline).
  • Withdraws less than the required amount due to a miscalculation.

The amount that should have been withdrawn but wasn't is officially referred to by the IRS as the RMD shortfall.

The Steep Penalty for a Missed RMD

The IRS does not take missed distributions lightly. Under the SECURE 2.0 Act, the penalties have been updated, but they remain significant:

  • 25% Excise Tax: The standard penalty is a 25% excise tax on the exact amount of the RMD shortfall. For example, if you were supposed to withdraw $10,000 but took out nothing, you owe a $2,500 penalty.
  • Reduced to 10%: The penalty can be reduced to 10% if the shortfall is corrected within a specific "correction window" (generally within two years) and applicable tax requirements are met.

How to Correct a Missed RMD (Step-by-Step)

If you realize you've missed an RMD, you need to act quickly. Do not wait for the IRS to contact you. Here is the recommended path to correct the error:

graph TD A[Discover Missed RMD] --> B[Step 1: Withdraw Shortfall Immediately] B --> C[Step 2: Calculate the Exact Shortfall] C --> D[Step 3: Complete IRS Form 5329] D --> E[Step 4: Attach Waiver Explanation Letter] E --> F[Submit to IRS & Await Decision] style A fill:#f87171,stroke:#b91c1c,stroke-width:2px,color:#fff style B fill:#60a5fa,stroke:#2563eb,stroke-width:2px,color:#fff style C fill:#60a5fa,stroke:#2563eb,stroke-width:2px,color:#fff style D fill:#60a5fa,stroke:#2563eb,stroke-width:2px,color:#fff style E fill:#facc15,stroke:#ca8a04,stroke-width:2px,color:#000 style F fill:#4ade80,stroke:#16a34a,stroke-width:2px,color:#000
  1. Withdraw the missed RMD immediately: As soon as the error is discovered, contact your financial institution and withdraw the exact amount of the shortfall.
  2. Calculate the shortfall: Determine exactly how much you were supposed to withdraw minus what you actually withdrew.
  3. File Form 5329: This form (Additional Taxes on Qualified Plans (Including IRAs) and Other Tax-Favored Accounts) must be filed for the specific tax year in which the RMD was missed.
  4. Attach a Statement for Relief: If you are requesting a penalty waiver, you must attach a letter explaining that the failure was due to a "reasonable error" and detailing the steps you took to correct it.

Requesting an IRS Waiver

The IRS is surprisingly forgiving when it comes to RMD mistakes, provided you are honest and proactive. The IRS may waive the excise tax entirely if:

  • The missed RMD was due to a reasonable error.
  • You have taken reasonable steps to correct the shortfall.

What counts as a "reasonable error"? While the IRS evaluates waivers on a case-by-case basis, common examples include:

  • Serious illness or hospitalization of the account owner or a close family member.
  • Incorrect professional advice from a CPA, financial advisor, or tax preparer.
  • An administrative error or delay caused by the financial institution holding the retirement account.
  • Mental incapacitation or severe cognitive decline.

Essential Tax Forms for RMD Reporting

Navigating an RMD correction involves juggling a few specific IRS forms. Here is a quick breakdown of what they do:

Form Purpose
Form 1099-R Reports the RMD to you and the IRS when it is actually distributed from the account.
Form 5329 Reports the missed RMD, calculates the excise tax, and is the official vehicle used to request an IRS penalty waiver.
Form 1040 Reports the taxable portion of the RMD distribution as ordinary income for the year you actually received the money.

Common RMD Mistakes to Avoid

To prevent the headache of filing Form 5329 and begging for a waiver, be aware of these incredibly common pitfalls:

  • Assuming RMDs can be rolled over: An RMD is the one type of distribution that absolutely cannot be rolled over into another tax-deferred account.
  • Forgetting to take the first RMD: The rules for your very first RMD are confusing. You have until April 1 of the year following the year you reach RMD age, but delaying it means you'll have to take two RMDs in one year.
  • Believing the IRS automatically waives the penalty: The IRS does not know why you missed it. You must formally request the waiver.
  • Failing to file Form 5329: If you miss the RMD, withdrawing the money later is only step one. You must file Form 5329 to close the loop with the IRS.

The Bottom Line

Missing a Required Minimum Distribution can be a stressful event that carries a hefty penalty. However, by acting swiftly to withdraw the funds and correctly filing Form 5329 with a strong explanation letter, you have a solid chance of having the penalty reduced to 10% or waived entirely.