The hidden costs shaping international trade for UK SMEs

Could hidden FX costs be putting SME supplier relationships at risk? Rupert Lee-Browne discusses how recent geopolitical tensions have impacted international payments for SMEs and explains why optimising payments strategy is key

August 12 2026

Payments are usually the last thing anyone thinks about, that is, right up until they go wrong. For many UK SMEs trading internationally, the focus tends to sit squarely on supplier terms, costs and making sure the goods turn up on time. Payment itself gets treated as an afterthought, when really it’s often the thing quietly deciding how well the whole transaction goes.
This challenge has become more pronounced over the past year, as renewed US tariffs under President Trump, geopolitical tensions including instability in the Middle East and fluctuations in oil prices have contributed to greater uncertainty around global markets, currencies and cross-border payments which is a polite way of saying nobody quite knows what’s coming next. These pressures have made international trade harder to predict, with SMEs facing greater difficulty managing payments after commercial terms have already been agreed.

Foreign exchange fees, currency movements and payment delays can all affect the final cost of a transaction, while uncertainty around payment timing can influence supplier confidence. For SMEs, which often have less flexibility to handle unexpected expenses and may rely on a smaller number of overseas suppliers, these factors can have a significant financial impact when repeated across multiple transactions.

In a more unpredictable trading environment, payment systems and cross-border processes need to be agile and responsive when things don’t go to plan. A business should therefore consider its payments strategy from the get-go in order to make better-informed decisions, manage financial risk and build stronger supplier relationships.

Reliability matters for supplier relationships

The way a business manages payments can also influence how it is viewed as a trading partner, particularly when reliability and predictability are becoming increasingly important in cross-border trade. These expectations are also becoming harder to manage, as factors such as FX and supply chain volatility continue to disrupt initial plans.

This is particularly significant for smaller businesses, where delayed or unpredictable payments can place greater pressure on cash flow. Research from the Department for Business and Trade found that late payments affect around 1.5 million UK businesses each year and cost the wider economy almost £11bn annually.

The research also found that 15% of UK businesses had chosen not to do business with specific customers because of their payment behaviour. For SMEs, which often rely on a smaller network of suppliers and trading partners, reliable payment practices are evidently crucial for not only maintaining strong relationships, but also the success of the business overall.

Why payment strategy is key

In an evolving trading environment, businesses that demonstrate consistency and dependability are better positioned to strengthen supplier partnerships and support long-term growth.

Businesses need to consider not only the opportunities available in international markets, but also the risks that could affect their ability to operate successfully. Decisions around suppliers, pricing and expansion need to take into account the wider commercial impacts and challenges of trading across borders.

Renewed US tariffs, geopolitical tensions including instability in Iran and the wider Middle East, and fluctuations in energy prices have shown how quickly international trade conditions can change. While businesses cannot predict every disruption, considering payment strategy early and having the right processes in place can help SMEs manage volatility more effectively. This can support better-informed decision-making and help build long-term resilience.

The changing role of payments in international trade

According to the latest government trade statistics, UK exports reached £946.6bn in the 12 months to May 2026, underlining the continued importance of international trade to the UK economy.

As more businesses trade across borders, the processes that support international activity are key. By working with specialist providers that understand the complexities of cross-border payments, SMEs can gain greater visibility over transaction costs, better manage currency exposure and identify payment processes that support their international growth.

No business can eliminate exchange rate movements or wider market uncertainty, no matter how good your spreadsheet is. However, businesses can reduce avoidable risks by improving visibility over payment costs, planning for currency exposure and ensuring their payment processes are suited to the scale of their international activity.

For SMEs looking to grow internationally, payments are becoming increasingly connected to profitability, resilience and the strength of commercial relationships. They are no longer simply the final step in a transaction, but a part of how businesses manage uncertainty and build sustainable growth across borders.

As international trade becomes more complex, how businesses pay is becoming almost as important as what they pay for.

Rupert Lee-Browne, CEO, Caxton

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