Customs Act Violation Lawyer
Customs Act Violation Lawyer | What to know before your customs case moves forward
Customs Act violation cases in Korea are unusual because two tracks run in parallel: a criminal investigation (led by the Korea Customs Service acting as a special judicial police agency, and then the prosecution) and an administrative track (additional duties, penalty surcharges, and in serious cases suspension of import/export business). The same set of facts — an undervalued invoice, a misdeclared HS code, a false country-of-origin marking — can be read very differently by an investigator building a smuggling case and by a customs officer calculating back duties. Whether an act is treated as simple negligence, an administrative infraction, or intentional evasion under the Customs Act (관세법) often decides whether the outcome is a fine, a settlement offer (통고처분), or an indictment.
Customs Act Violation | How a Customs Act case can branch after the same investigation
Once Korea Customs Service opens a case, the outcome generally lands in one of these tracks depending on the amount involved, intent, and prior history. Understanding which track you are in changes what kind of defense actually helps.
| Who decides | Korea Customs Service (통고처분) |
| Outcome | Payment in lieu of prosecution |
| Criminal record | None if accepted and paid |
| Typical amount | Lower-value, non-repeat cases |
A 통고처분 (notice of disposition) under the Customs Act lets Customs resolve certain violations without referring the case to prosecutors, similar in function to a traffic fine (관세법 제311조).
| Who decides | Prosecutors, then courts |
| Outcome | Fine, suspended sentence, or imprisonment |
| Criminal record | Yes if convicted |
| Typical amount | Higher-value or repeat conduct |
Smuggling and import/export declaration fraud can carry imprisonment or fines calculated against the value of the goods (관세법 제269조, 제270조).
| Who decides | Customs office (post-clearance audit) |
| Outcome | Back duties plus additional duty |
| Criminal record | None |
| Typical amount | Based on underpaid duty amount |
When a declaration understates dutiable value or misclassifies goods without intent to evade, Customs can simply reassess and add an additional duty (관세법 제42조).
| Who decides | Korea Customs Service |
| Outcome | Suspension or revocation of registration |
| Criminal record | Separate from criminal proceedings |
| Typical amount | Applies to license holders, not one-off importers |
Customs brokers, bonded warehouse operators, and AEO-certified companies face separate registration sanctions on top of any criminal or duty consequences.
Customs Act Violation | Where the line between an administrative error and a crime is actually drawn
Investigators and defense counsel both focus on the same question: was this negligence, or was there intent to evade duty or law? The answer usually comes from documentary evidence rather than a single admission.
Intent is inferred from the paper trail
Because direct evidence of intent is rare, Customs and prosecutors typically build their case from invoices, contracts, emails, and bank transfer records that show a discrepancy between what was declared and what actually happened. A gap between the invoice price and the price actually paid, or between the declared HS code and the product's actual function, is treated as circumstantial evidence of intent under the smuggling and declaration-fraud provisions (관세법 제269조, 제270조).
Repeated conduct changes the calculus
A single misdeclaration is more likely to be treated as correctable error. A pattern across multiple shipments, or use of a shell trading company to split invoices, tends to move a case from the administrative track toward criminal referral, because it undercuts the argument that any one instance was a mistake.
Cooperation with a post-clearance audit matters early
Korea Customs Service routinely conducts post-clearance audits of import records. How a company or importer responds at that stage — providing documentation promptly versus appearing to obstruct or delay — can influence whether the matter is resolved by additional duty assessment or escalated for investigation.
Customs Act Violation | The kinds of conduct that most often trigger a Customs Act case
Most Customs Act matters we see fall into a handful of recurring patterns. Each raises a different mix of criminal and administrative risk.
Undervaluation and dual invoicing
Declaring a lower transaction price than what was actually paid — often through a separate 'true' invoice sent outside the declared documents — is treated as a classic case of duty evasion through false declaration (관세법 제270조). The dutiable value dispute itself can also be contested administratively even where no criminal intent is found (관세법 제30조 on customs valuation).
HS code misclassification
Some misclassification is genuinely a gray area, since tariff classification of complex or composite goods is technical and reasonable importers can disagree. Whether a misclassification was a defensible interpretation or a deliberate attempt to obtain a lower tariff rate is often the central factual dispute.
Prohibited or restricted items and smuggling
Bringing in items without required import permits, or concealing goods to avoid declaration entirely, falls under the smuggling provisions and generally carries the most serious exposure, including imprisonment (관세법 제269조). Cases involving items subject to separate licensing (certain foods, drugs, electronics, cultural property) can also trigger charges under other statutes in addition to the Customs Act.
False country-of-origin marking
Mislabeling origin to obtain preferential tariff treatment under a free trade agreement, or to make goods appear domestically made, is separately regulated and can result in both a Customs Act violation and a Foreign Trade Act (대외무역법) issue running in parallel.
Customs Act Violation | How a Customs Act case typically moves forward
Cases begin either with a post-clearance audit request for documents or a formal summons from Korea Customs Service's investigation division. Early legal review of what is actually being asked helps avoid statements that later look like admissions of intent.
Counsel reviews the import/export declarations, contracts, invoices, and internal communications alongside the client to identify where the discrepancy actually lies and whether it supports an administrative or criminal characterization.
Depending on the stage, this may mean a written opinion to Customs before a criminal referral decision, or a defense submission once the case has moved to the prosecution's office.
The case resolves through a 통고처분 payment, an administrative duty assessment, a non-indictment decision, or an indictment leading to trial, depending on how intent and amount were ultimately assessed.
If indicted, the case proceeds through criminal trial like any other criminal matter. If only an administrative additional duty was assessed and the importer disputes it, a separate administrative appeal or lawsuit can be pursued (관세법 제119조 등의 이의신청·심사청구 절차).
Customs Act Violation | How fees are generally calculated in Customs Act matters
Typically set based on the stage of the case (audit response vs. investigation vs. trial), the complexity of the transactions involved, and whether the matter involves a single declaration or a pattern across many shipments.
Where applicable, this is agreed separately depending on the outcome sought — for example, avoiding indictment, securing a non-prosecution disposition, or reducing an administrative duty assessment. Amounts are never guaranteed in advance.
If the case involves a separate administrative appeal against an additional duty assessment, this is usually billed apart from any criminal defense work, since it is a distinct procedure.
Costs such as customs data requests, expert opinions on tariff classification or valuation, and translation of trade documents are billed separately as incurred.
※ Costs vary depending on case complexity and specific circumstances; exact fees will be provided during consultation. No specific outcome is guaranteed.
Customs Act Violation | Self-Check Before You Respond to Customs
1️⃣ If you received a post-clearance audit notice
- Does the notice specify which declarations or shipments are being reviewed?
- Do you have the original contracts and payment records for those transactions?
- Is there any gap between the declared price and what was actually transferred?
- Have you responded to any prior audit or inquiry about the same goods?
2️⃣ If you were summoned by Korea Customs Service investigators
- Does the summons state whether you are being treated as a suspect or a witness?
- Have you reviewed all documents you might be asked about before attending?
- Do you understand which specific provision of the Customs Act is being investigated?
- Have you discussed with counsel whether to attend with a written statement instead?
3️⃣ If you are a customs broker or bonded warehouse operator
- Could this violation also trigger a registration suspension separate from any criminal case?
- Have you notified your business insurance or professional liability coverage if applicable?
- Are your internal compliance records for this transaction complete and dated?
4️⃣ If you disagree with an additional duty assessment
- Do you understand the filing deadline for an administrative appeal against the assessment?
- Do you have documentation supporting your original declared value or classification?
- Have you separated the administrative dispute from any parallel criminal exposure in your response strategy?
