Resilient Supply Chain Podcast: Tariff Savings, Sourcing Flexibility and the Compliance Trade-Off
Tariff volatility is forcing supply chain leaders to reconsider not just where they buy materials, but how they evaluate the costs of keeping suppliers. In the latest Resilient Supply Chain Podcast, host Tom Raftery speaks with Curtis Spencer, CEO of IMS Worldwide, about the commercial case for US foreign trade zones (FTZs). Their discussion examines when duty relief strengthens sourcing flexibility and when the accompanying systems, compliance and management costs make it a questionable investment. Listen to the full episode
Tariffs Reshape Supplier Decisions
Tariffs have become a source of operational risk rather than merely a customs expense. A supplier that can consistently meet volume and delivery requirements may become less competitive overnight because of a change in duty rates. Switching to a cheaper source can protect margins, but may also sacrifice capacity, reliability or established relationships. “People are changing their supply chains left and right,” Spencer observes. His argument is that FTZs may provide another option: mitigating some tariff exposure while preserving access to dependable suppliers. That does not replace diversification; it changes the calculation between lowest landed cost and the ability to keep alternative sources available when disruption strikes.
Revenue Protected Is Not Duty Saved
FTZs allow qualifying imported goods to be held under special customs procedures, potentially deferring duties until entry into US commerce and avoiding them on eligible re-exports. Spencer notes that an approved zone can encompass an existing warehouse or manufacturing site; it need not sit beside a seaport. He describes a customer establishing FTZs at five locations after high import duties undermined its competitiveness in overseas markets. By adjusting which imported products served domestic demand and which were re-exported, the company preserved approximately $50 million in export sales, according to Spencer. The distinction is material: protected sales revenue is not equivalent to $50 million in avoided duties, and the two figures should not be treated interchangeably in an investment appraisal.
The Compliance Burden Changes the Economics
The most useful challenge to a straightforward savings narrative comes from Spencer himself. In one illustrative calculation, an FTZ delivering $200,000 a year in savings but costing $100,000 to manage would not justify the additional exposure. “The customs compliance risk two to one is not enough,” he argues. At the other extreme, he sketches a possible $3 million annual benefit against $300,000 of additional cost, showing why operational teams and finance executives may evaluate the same proposal differently. These are examples, not guaranteed returns. Effective governance requires a realistic assessment of staffing, customs obligations, implementation costs and who is accountable for compliance.
Data Quality Determines Whether the Process Works
FTZ procedures can reduce administrative friction through weekly customs entries and systems connected to warehouse management software. But integration only works when the necessary information is accurate and available. Spencer describes suppliers sending advance shipping notices, invoices and bills of lading as separate emailed PDFs, leaving staff to re-enter data that could otherwise flow electronically. For operations leaders, the lesson extends beyond customs: duty treatment does not repair fragmented supplier information.
Spencer also estimates that setting up an FTZ can take seven to twelve months, making preparation and systems assessment part of the business case rather than an afterthought. Ultimately, tariff mitigation should be judged as an operational investment, not an isolated customs saving. As regulatory pressures shift, companies will need to weigh duty exposure against supplier options, data readiness, compliance governance and implementation time. The stronger decision is the one that protects commercial flexibility without creating more risk than the benefits justify.
