IEEPA Tariff Refunds After a Customs Audit: How an Open CBP Review Affects Your Claim

Most guidance on IEEPA tariff refunds focuses on gathering entry data, correcting ACE portal records, and filing through the CAPE portal before the deadlines. Far less is written about what happens when an importer has an open or recently closed Customs audit at the same time it is trying to recover duties. That overlap is common, and it changes the practical playbook.

The two processes touch the same entries, the same Importer of Record number, and often the same employees. If they are not coordinated, an importer can create contradictions between what it told CBP in an audit response and what it now asserts in a tariff overpayment recovery claim. That is a real exposure, and it is avoidable.

Why Audits and Refund Claims Intersect

Following the February 2026 Supreme Court ruling that struck down the IEEPA tariffs, CBP began accepting refund claims at scale. CBP has processed roughly $121.75 billion in claims, yet about 93.5% of eligible importers have not filed. With deadlines of February 4, 2027 for the fentanyl-related tariffs on China, Mexico, and Canada, and April 5, 2027 for reciprocal tariffs on other countries, there is enormous pressure to move quickly.

At the same time, CBP's regulatory audit program never stopped. Focused assessments, quick response audits, and post-summary corrections all examine the same universe of entries that a refund claim covers. An audit can look back five years or more, which is precisely the window in which the IEEPA duties were collected.

The interaction matters because an audit finding can change the underlying facts a refund claim depends on. If an auditor determines that a classification was wrong, that valuation was understated, or that a preferential origin claim was unsupported, the duty amount on the entry changes. The refund claim must reflect the corrected amount, not the amount originally deposited.

The Three Scenarios Importers Actually Face

1. A Focused Assessment Is Open Right Now

If CBP has issued a pre-assessment survey or an audit notification letter, your refund claim is not blocked, but it should not be filed blind. The safer approach is to file claims for clean entries while flagging entries that fall inside the audit scope. Filing everything at once and later amending is possible, but it adds cost and can raise questions about internal controls.

Keep in mind that an IEEPA tariff refund claim is a request for money back. An audit is a review of whether money was owed in the first place. Responding to one in a way that undercuts the other is the single most common self-inflicted problem in this area.

2. A Penalty Case or Pre-Penalty Notice Is Pending

A pending pre-penalty notice under 19 U.S.C. 1592 generally means CBP believes there was a material false statement, omission, or act. Filing a refund claim on the same entries during an active penalty case is legally permissible, but the sequencing and the representations made in each filing need to be consistent.

This is the scenario where a licensed specialist earns their fee. The interaction between a penalty mitigation submission and a refund claim is technical, and statements made in one forum are generally available in the other.

3. The Audit Closed Recently With Findings

A closed audit with a finding of underpayment is actually simpler than many importers assume. You pay the additional duty, and the IEEPA portion of that additional duty is itself refundable if it was assessed under a tariff the Supreme Court invalidated. Do not assume that a prior audit finding forfeits your refund right on those entries.

The inverse is also true. If the audit found an overpayment, that overpayment is subject to the normal protest and refund rules, which are separate from the IEEPA refund window and its deadlines.

Practical Steps Before You File

• Pull every open audit, focused assessment, and penalty case in your ACE portal account before filing any refund claim. Know the scope and the entry list.
• Cross-reference the audit entry list against your refund entry list. Identify overlaps in writing, not from memory.
• Confirm that your ACE portal importer data, including the Importer of Record number and bond information, is accurate. Errors here slow claims whether or not an audit is open.
• Do not amend an entry summary or file a post-summary correction that changes duty liability without checking how it affects the refund amount you already claimed.
• Keep a single internal record of what was represented to CBP in each filing, and who reviewed it.

What This Means for Your Refund Timeline

Refunds are issued by ACH within roughly 60 to 90 days including statutory interest, but that assumes a clean claim. Entries that are part of an open audit or a penalty case can sit longer while CBP reconciles the two matters. The statutory interest continues to accrue, so a delay is not necessarily a loss, but it does affect cash flow planning.

The bigger risk is missing a deadline. The refund windows are fixed, and an open audit does not extend them. Importers who wait for an audit to close before filing risk running out of time on the very entries the audit covers.

The Bottom Line

An open Customs audit is a reason to be careful, not a reason to sit out the IEEPA tariff refund process. The importers who recover the most are the ones who map their audit exposure against their refund eligibility, file on clean entries early, and handle the overlapping entries with a licensed specialist who understands both sides of the conversation.

With roughly 93.5% of eligible importers still not filed and more than $121.75 billion in claims already processed, the window is narrowing for everyone. If you have an open audit, a closed audit with findings, or a pending penalty case, the time to check eligibility is now, not after the audit closes.

Tarisol connects U.S. importers with licensed specialists who file IEEPA tariff refund claims through the CAPE portal. Fees are success-based, with no upfront cost. Check your eligibility today, before the February 4, 2027 and April 5, 2027 deadlines close.