IRS Letter 854C is the written denial of your request to have a penalty waived or reduced, and it is not the end of the dispute. You have the right to take the matter to the IRS Independent Office of Appeals, and in some later situations to the U.S. Tax Court. The deadline for requesting an appeal is short, typically 30 days from the date printed on the letter, so the first thing to do is check that date.1Internal Revenue Service. Appeals Process
What the Letter Is Actually Saying
The official title of Letter 854C is “Penalty Waiver or Abatement Disallowed/Appeals Procedure Explained.”2Internal Revenue Service. IRM 8.11.5 International Penalties You (or your representative) asked the IRS to cancel or reduce a penalty. The IRS reviewed that request and said no. The letter does two things at once: it tells you why your arguments were rejected, and it explains how to challenge the denial.
Somewhere on the letter you will find the specific penalty at issue, the tax period, the dollar amount, the IRS’s stated reason for the denial, a control number, and the name of an IRS contact. Keep the letter where you can find it. Every step that follows refers back to that information.
The denial came from the IRS division that assessed the penalty in the first place. The Independent Office of Appeals is a separate function with authority to settle or eliminate penalties when a taxpayer presents a reasonable case.3Internal Revenue Service. Appeals A no from compliance is not a no from Appeals.
Letter 854C most often arrives in international information return cases — missed or late Forms 5471, 5472, 3520, 3520-A, or FBARs. The penalties in that area can reach $10,000 or more per form per year and stack across years, which is why abatement requests, and denials, are so common there.2Internal Revenue Service. IRM 8.11.5 International Penalties
What to Do in the First Week
Read the letter line by line. Write down the penalty code, the tax year, the dollar amount, and the specific reason the IRS gave for denying your request. That reason is the thing you have to answer.
Then look at the deadline. The clock runs from the date printed on the letter, not the date you opened the envelope, so some of your window is already gone. If you receive the letter outside the United States, assume you have even less time than it looks.
Pull together every document connected to the penalty: the original penalty notice, the abatement request you sent in, the evidence you included, and any correspondence from the IRS. If your original request leaned on reasonable cause, start collecting the kind of evidence that would strengthen it — medical records, correspondence with your preparer, disaster declarations, or anything else that shows why you could not comply on time.
Do not wait and see. If the deadline passes without action, the penalty becomes final, interest keeps accruing, and the IRS can move toward collection.
How to Appeal
Which appeal format you use depends on the dollar amount at stake.
Small Case Request
If the total of penalty, interest, and any associated tax for each period is $25,000 or less, you can file a small case request. This is a short written statement identifying the penalty you dispute and explaining why you disagree with the denial. No special format is required; a clear factual letter will do.1Internal Revenue Service. Appeals Process
Formal Written Protest
If any single tax period exceeds $25,000 in combined penalty, interest, and tax, you must file a formal written protest for all periods involved. The protest has to include your contact information, a clear statement that you want to appeal to the Appeals Office, a copy of Letter 854C, the tax periods at issue, the specific items you disagree with and your reasons, the facts supporting your position, any legal authority you rely on, and a signed declaration under penalties of perjury that the facts are true and correct.1Internal Revenue Service. Appeals Process
Send the protest to the address specified in your letter, and use a delivery method that gives you proof of receipt. Certified mail with return receipt, or an IRS-recognized private delivery service, both qualify.
Tax Court Later On
Tax Court is not the next step after Letter 854C, but it may become relevant later. If the IRS eventually issues a statutory notice of deficiency, often called a 90-day letter, you can petition the U.S. Tax Court directly. Taxpayers inside the United States have 90 days from the notice date; those outside the country get 150 days.4Internal Revenue Service. Understanding Your CP3219N Notice Tax Court is slower and more expensive than an administrative appeal, but it provides independent judicial review when the internal process does not resolve the dispute.
Making a Stronger Reasonable Cause Argument
Your first argument did not persuade the IRS. That does not mean the argument was wrong; it may mean it needs sharper presentation and more evidence. Most international information return penalties can be abated on a showing of reasonable cause, meaning you exercised ordinary business care and prudence but still could not comply on time.
Arguments that tend to work include reliance on a qualified tax professional who had all the information and still failed to file, serious illness or an unavoidable absence that prevented timely filing, and records that were destroyed or held by a third party and could not be obtained in time. First-time exposure to an international reporting requirement can also carry weight, but only when you can explain concretely why the obligation was genuinely hard to discover in your situation.
The argument that consistently fails is “I didn’t know I had to file” on its own, especially when you had access to professional advice or the filing requirement showed up on another return. Appeals officers see that one constantly and treat it with skepticism. If lack of knowledge is part of your story, tie it to specific facts.
Whatever you file, answer the reason the IRS actually gave for denying your request. If the denial letter said the evidence was insufficient, supply more. If it said reasonable cause does not apply to your situation, explain why that reading is wrong and cite the authority you rely on. Resubmitting the original request in different words rarely changes the outcome.
Getting Someone to Represent You
Only attorneys, certified public accountants, and enrolled agents can represent you before IRS Appeals.1Internal Revenue Service. Appeals Process An unenrolled preparer can attend a conference as a witness but cannot speak for you.
To authorize a representative, file Form 2848, Power of Attorney and Declaration of Representative. That gives your chosen professional authority to communicate with the IRS, receive your confidential tax information, and act for you throughout the appeal. You can submit Form 2848 online through the IRS website, which speeds up the authorization.5Internal Revenue Service. About Form 2848, Power of Attorney and Declaration of Representative
International information return penalties are a niche area. A practitioner who regularly handles Form 5471 or FBAR penalty cases will know which arguments land with Appeals officers and which do not. Given the dollar amounts typical in these cases, the fee is usually a fraction of the exposure.
What It Costs If the Penalty Stands
If the appeal does not succeed and the penalty becomes final, you owe the original penalty plus interest. Interest compounds daily from the date the penalty was assessed and has no cap.
If the underlying situation also produced a failure-to-file or failure-to-pay problem on a related return, additional penalties layer on top. The failure-to-file penalty is 5% of the unpaid tax per month, capped at 25%.6Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax The failure-to-pay penalty is 0.5% per month, also capped at 25%. When both apply, the failure-to-file penalty is reduced by the failure-to-pay amount for each overlapping month.7Internal Revenue Service. Failure to File Penalty
If you cannot pay the full amount while an appeal is pending or after it concludes, you can request an installment agreement. The IRS generally accommodates payment plans, but interest and the failure-to-pay penalty keep accruing on the unpaid balance until the account is resolved.