Impact of Middle East Conflict on Customs Compliance and Duty

The escalation of conflict across the Middle East has shifted from a geopolitical concern into a structural feature of global trade disruption. What initially appeared as episodic instability in the Red Sea has evolved into a sustained reconfiguration of both maritime and air logistics between Asia, the Gulf and Europe. For businesses operating in the UK and EU, the implications extend well beyond freight volatility. The disruption is manifesting as a customs and compliance issue, with measurable consequences for valuation, origin, documentation integrity and working capital. Its impact is being felt across:

• Customs valuation.
• Rules of origin.
• Trade remedies.
• Working capital.
• Documentation control.

To understand the customs consequences, it is necessary first to understand the trade routes under pressure.

The Trade Corridors at Risk

At the centre of the disruption lies the Asia-Europe trade corridor, traditionally routed via the Indian Ocean, the Red Sea and the Suez Canal. This pathway depends on a series of strategic chokepoints, notably the Strait of Hormuz, the Red Sea passage and Suez itself.

Persistent security concerns have led many carriers to divert vessels around the Cape of Good Hope, a shift that has lengthened transit times by several weeks and introduced a higher degree of schedule unreliability. Air freight has been similarly affected, with restricted or closed airspace forcing rerouting, reducing available capacity and increasing costs on key lanes.

What is now emerging, however, is that disruption is no longer confined to transit. Congestion, port access constraints and the use of alternative corridors, including land-bridge solutions across Gulf states, are introducing additional layers of customs complexity.

Movements that were previously single-leg imports are increasingly becoming multi-stage journeys involving transit procedures, multiple declarations and handovers between jurisdictions. This raises the likelihood of inconsistencies between export, transit and import data, and increases the risk of breaks in customs supervision.

Customs Valuation and Duty Impact

These logistical adjustments have direct and often underappreciated consequences for customs valuation. Under EU and UK (and most countries) rules, the customs value of imported goods incorporates freight and insurance costs. As shipping lines impose surcharges reflecting longer routes, higher fuel consumption and elevated war-risk premiums, the taxable base on which duties and import VAT are calculated expands accordingly.

The nominal tariff rate may remain unchanged, but the effective duty burden rises. This dynamic is now sufficiently pronounced that customs authorities have begun to scrutinise valuation practices more closely, particularly in cases where freight costs have increased sharply or where companies attempt to separate or reclassify surcharges.

The alignment between transfer pricing and customs valuation is also drawing renewed attention, especially in intra-group transactions. At the same time, the growing use of complex surcharges, including security and contingency fees, is creating uncertainty over what should properly be included in the customs value, increasing the likelihood of challenge during audit.

Airspace Closures: Cost and Documentation Risk

Air freight disruption introduces a parallel set of challenges, less visible but no less material for trade documents.

Many international trade flows, particularly those governed by letters of credit or preferential tariff regimes, still rely on the timely presentation of original documents such as bills of lading or certificates of origin. Current estimations suggest that only 1% of trade documents worldwide are digitalised. With courier routes affected by airspace restrictions, delays in document transmission have become more frequent.

The consequences are operational rather than theoretical: preferential tariff claims may be denied at the point of import, goods may be held pending receipt of originals, and companies may be required to pay full duties upfront before seeking reimbursement.

While some authorities showed flexibility during the pandemic, there are signs that evidentiary standards are tightening again, exposing businesses that have not adapted their documentation processes.

At the same time, the increased use of expedited or simplified clearance procedures to maintain flow means that incomplete or provisional declarations are more common, shifting risk into the post-clearance environment where discrepancies are more likely to be scrutinised.

Rules of Origin: Structural Risk from Supply Chain Adjustment

More structurally, the disruption is beginning to reshape supply chains in ways that carry implications for Rules of Origin. Diversion of shipping routes does not in itself alter origin, but changes in sourcing, consolidation hubs or processing locations can.

Companies seeking to mitigate delays are increasingly turning to alternative suppliers or routing goods through intermediary countries such as Turkey or Egypt. These adjustments can inadvertently undermine preferential origin status if the underlying rules, whether based on substantial transformation or cumulation, are no longer satisfied.

The risk is typically latent, surfacing during post-clearance audits when authorities examine whether origin declarations were substantiated. Given the growing use of data analytics to detect anomalies in trade flows, inconsistencies between declared origin and observed routing patterns are more likely to be identified. Where supply chains shift quickly, there is also a greater risk that sanctions or export control considerations are overlooked, particularly where new intermediaries or jurisdictions are introduced without full compliance review.

Temporary Export, Warehousing & Asset Risk

The strain extends to customs procedures governing temporary movements, transit and bonded storage. Equipment deployed in the Gulf region under temporary export regimes, or goods held in bonded warehouses, may become difficult to account for if operations are disrupted or facilities become inaccessible.

In parallel, increased use of transit movements and temporary storage, driven by congestion and rerouting, places additional pressure on customs control systems.

In such cases, the administrative requirements needed to discharge customs procedures, proof of re-export, inventory records, or carnet documentation, may not be met. Transit time limits may be exceeded, or movements may not be properly closed, particularly where goods move across multiple jurisdictions.

The legal consequence is straightforward: duty relief can be withdrawn, and full import duties may become payable. Here again, operational disruption does not suspend customs obligations.

Trade Remedies and Anti-Circumvention

At the same time, enforcement authorities are paying closer attention to the risk of circumvention of trade remedies. Rapid shifts in trade routes and intermediaries can resemble patterns historically associated with attempts to bypass anti-dumping or countervailing measures.

Sectors such as steel, chemicals and electronics are particularly exposed. The combination of heightened geopolitical sensitivity and improved data-sharing between customs administrations has shortened the timeline for investigations and increased the likelihood that irregularities will be pursued.

More broadly, the use of alternative ports and jurisdictions introduces variability in customs practice and documentation quality. This can result in inconsistencies that, while operationally driven, increase the likelihood of challenge when goods are subsequently imported into the EU or UK.

Working Capital and Financial Planning Impact

Taken together, these factors are feeding through into corporate balance sheets.

Higher freight costs inflate customs values, increasing duty and VAT outlays at the border. Delays in documentation can lead to temporary overpayments, while longer transit times and clearance bottlenecks encourage companies to hold additional inventory, further tying up capital.

At the same time, more complex routing and multi-leg movements increase administrative costs and the risk of error, while pressure on duty deferment accounts and financial guarantees is becoming more evident, particularly for businesses operating on thin margins or with high import volumes.

What was previously a logistics cost issue is now a broader financial and compliance challenge.

Strategic Response and Mitigation

Disruption of this scale cannot be managed through incremental fixes. Companies that are coping most effectively are not attempting to stabilise individual shipments, but are instead reconfiguring their customs operating model to match a more volatile trading environment. In practice, this is translating into a series of consistent actions:

Align customs infrastructure with changing trade lanes

As cargo is diverted to alternative ports and jurisdictions, businesses are expanding broker coverage, reviewing authorisations, and ensuring customs entries can be executed consistently across multiple entry points rather than relying on a single established route.

Adopt “responsive compliance” linked to supply chain decisions

Changes in routing, sourcing or Incoterms are increasingly treated as triggers for reassessing valuation, origin and documentation requirements, reducing the risk that operational decisions create downstream compliance exposure.

Strengthen data governance and pre-arrival accuracy

With increased reliance on advance filings and risk-based controls, companies are investing in data consistency across commercial, transport and customs systems, and introducing validation processes to prevent misalignment across multi-leg shipments.

Reduce reliance on physical documentation

Businesses are accelerating the move toward digital document management, ensuring that key documents, such as certificates of origin and invoices, are available and verified prior to arrival, rather than dependent on disrupted courier flows.

Revalidate origin and trade agreement eligibility

Where supply chains have shifted, companies are reassessing origin status, refreshing supplier declarations and reviewing exposure to anti-dumping and circumvention risk, rather than assuming continuity of preferential treatment.

Increase control over transit and special procedures

Greater use of warehousing, inward processing and transit is being matched with tighter oversight, particularly around transit discharge, inventory traceability and audit trails across multi-leg movements.

Prepare for increased post-clearance audit activity

Recognising that facilitation at the border often leads to scrutiny after clearance, businesses are maintaining detailed records of valuation, origin and routing decisions, and documenting the rationale for deviations from standard processes.

Integrate sanctions and export control checks into routing decisions

As goods move through new jurisdictions and intermediaries, companies are strengthening due diligence on counterparties, screening trade flows and verifying end-use and end-user where supply chains have changed.

Plan for sustained working capital impact

Higher customs values and delayed preferential claims are being built into financial planning, with businesses reviewing deferment capacity, modelling duty and VAT exposure, and reassessing contractual terms where necessary.

Embed customs into supply chain strategy

Perhaps most significantly, customs is being treated less as a downstream administrative function and more as a core component of supply chain design, with compliance considerations integrated into decisions on sourcing, routing and logistics.

Taken together, these measures reflect a broader shift in approach. In a trading environment defined by disruption and increased scrutiny, resilience is no longer achieved through operational flexibility alone, but through tight integration of logistics, customs and financial control..

Corridor Instability Becomes a Compliance Event

For businesses, the implication is that logistics decisions can no longer be taken in isolation from customs considerations. Adjustments to routing, sourcing or transport mode have immediate downstream effects on duty liability, eligibility for preferential treatment and audit exposure.

Those that continue to treat the issue as a question of freight cost alone risk encountering more complex and costly problems at the border or after clearance. Conversely, companies that integrate customs analysis into their response, reassessing valuation models, stress-testing origin positions and reinforcing documentation processes, are better positioned to navigate what is likely to remain a volatile and closely scrutinised trading environment.

The current disruption across the Middle East is not temporary in nature, and it is not limited to transport. It is shaping:

• Customs value,
• Duty exposure,
• Preferential origin risk,
• Documentation reliability,
• Enforcement sensitivity,
• Working capital.

Businesses that treat this purely as a logistics challenge risk downstream customs consequences. Those that integrate valuation, origin, documentation governance, and financial modelling into their response will be better positioned to manage both cost and compliance exposure.