How to Reduce Hidden Costs in Cross-Border Supplier Payments

A business that regularly pays a supplier abroad usually looks at the invoice and the total charged by its bank, assuming that's the whole cost story. In reality, a large part of the real cost of an international payment hides elsewhere — in the exchange rate applied, in intermediary fees that aren't always disclosed, and in the choice of payment channel.

Where the costs actually hide

The exchange rate applied

This is often the biggest and least visible cost. Many banks and payment providers don't charge a high explicit fee, but use an exchange rate less favorable than the reference market rate.

Intermediary fees (SWIFT)

For payments processed through the traditional SWIFT network, intermediary banks may withhold an additional fee during the transfer, reducing the amount the supplier actually receives.

The choice of payment channel

Routing a payment through a specialized provider with access to local payment networks, instead of relying solely on the traditional banking circuit, can reduce both time and cost.

Cost source	How visible	Typical impact
Exchange rate applied	Low	Often the largest component of the real cost
Declared explicit fee	High	Usually smaller than the exchange-rate cost
SWIFT intermediary fees	Very low	Can be significant, especially on larger amounts

How to calculate the real cost of a payment

Real cost = Amount sent × Reference market exchange rate − Net amount received by the supplier

A practical example

A business needs to pay a supplier in Vietnam $40,000 for a shipment of components. The company's bank offers "zero fees" on the transfer but applies an exchange rate 1.3% below the reference market rate. A specialized payment provider charges a flat $20 fee, but with a spread of only 0.4%.

Looking only at the declared fee, the bank looks like the cheaper option. But calculating the net amount received by the supplier: the 1.3% spread on $40,000 amounts to roughly $520 in lost value versus the reference rate. The specialized provider, with a 0.4% spread plus a $20 fee, comes to roughly $180 in total cost.

What to check before every recurring payment

• Always request a quote for the actual amount and currency of the transaction.
• Compare the final net amount received by the supplier.
• Check whether the payment goes through SWIFT intermediaries or a local payment network.
• Repeat the comparison periodically.

Manually comparing the real cost across multiple providers for every payment can take time. Platforms like mangomundi let you view exchange rates, fees, and speed from multiple providers in a single interface, making the initial analysis easier.

Frequently asked questions

Is a provider that declares "zero fees" always cheaper? Not necessarily — in most cases the cost simply shifts into the exchange rate applied.

Can SWIFT intermediary fees be avoided? Some providers support local payment networks instead of the traditional SWIFT circuit.

Do I need to recalculate the real cost for every payment? For recurring payments of similar amounts, it's not necessary to redo it every time, but it's worth checking periodically.

Conclusion

The real cost of paying a supplier abroad rarely matches just the declared fee — the most significant part usually hides in the exchange rate applied and in intermediary fees not disclosed upfront.