How to Pay International Suppliers: Methods, Costs and Pitfalls Compared
Paying a domestic supplier is a chore; paying an international one is a decision. The method you choose affects your landed cost, your protection if goods never ship, your paperwork at customs and even your relationship with the supplier. Having paid suppliers and partners across four continents, here's the practical comparison I wish I'd had at the start.
The main methods at a glance
| Method | Typical total cost | Speed | Buyer protection |
|---|---|---|---|
| Bank wire (SWIFT) | $25–$75 + 2–5% FX margin | 1–5 business days | None once sent |
| Online FX/transfer platform | 0.3–1.5%, transparent | Hours to 2 days | None once sent |
| Letter of credit | 0.5–2% in bank fees | Slow to set up | Strong (document-based) |
| Documentary collection | Modest bank fees | Moderate | Partial |
| Corporate card / trade platforms | Varies; possible 1–3% FX fee | Instant | Chargeback rights (limited) |
Bank wires: the default, and the default trap
The SWIFT wire remains the lingua franca of trade payments — every supplier accepts it. Its weaknesses are cost and opacity: your bank's FX margin (check it against the mid-market rate), plus fixed fees, plus correspondent banks each taking a bite in transit. Two practices save real money: pay in the supplier's currency rather than letting your bank or theirs convert at an uncontrolled rate, and ask your bank for its FX margin in writing — then show them a competitor's quote. For recurring volumes, banks negotiate.
FX platforms: the cost killer for established relationships
Specialist payment platforms and fintech FX brokers now handle business payments to most trading countries at a fraction of bank margins, with the rate and fee shown upfront. For suppliers you already trust, this is usually the cheapest compliant route. Two caveats: check the platform is licensed for business payments in your country and the destination, and confirm your supplier can receive from it — some Chinese and Bangladeshi suppliers, for example, prefer specific channels for their own currency-control paperwork.
Letters of credit: expensive certainty for new relationships
A letter of credit (LC) flips the trust problem: your bank commits to pay the supplier's bank only when documents proving shipment (bill of lading, inspection certificate, packing list) are presented in exact conformity. For a first large order with an unproven supplier, the fee is often the cheapest insurance available. The discipline it imposes — precisely specified documents, dates and terms — also forces both sides to agree on details that otherwise surface as disputes. The downsides are cost, rigidity (a one-letter discrepancy in documents can block payment) and setup time.
Payment terms are part of the price
The standard progression in trade relationships runs: 100% advance → 30/70 (30% deposit, 70% against shipping documents or bill-of-lading copy) → open account with net terms. Every step down that ladder transfers risk from supplier to buyer or vice versa, and it has monetary value. A supplier asking full prepayment should be cheaper than one offering 30/70; if you're asked for terms outside your comfort zone, price the risk or split the difference with an LC or escrow-style platform. Never let payment terms be an afterthought to unit price — they are price.
The fraud that catches experienced importers
The single most damaging scam in trade payments is business email compromise: criminals penetrate or spoof your supplier's email and send new bank details days before a scheduled payment. The invoice looks perfect because it's real — only the account changed. Non-negotiable rule: verify any change of bank details by voice, on a number you already had on file, never one from the email itself. A two-minute call has saved companies I know six-figure sums; skipping it has cost others the same.
Compliance basics that protect you
- Keep invoices, transport documents and payment records aligned — customs authorities and banks increasingly cross-check them, and mismatches trigger delays or audits.
- Confirm your payment route complies with both countries' currency regulations; some markets require payments to registered exporter accounts for the exporter to clear their own paperwork.
- Screen new counterparties against sanctions lists — your bank will, and a frozen payment is a slow-motion disaster.
A sensible default playbook
New supplier, meaningful amount: small trial order, 30/70 terms, or an LC if the sums justify it. Established supplier: FX platform in the supplier's currency, benchmarked against the mid-market rate, with terms negotiated as part of pricing. Any changed bank details: phone verification, always. And whatever the method, know the total cost — fees plus FX margin plus receiving charges — before you compare supplier quotes, because a cheaper unit price can easily be eaten by an expensive payment route. For the mirror-image problem, see choosing the right currency when invoicing international clients.
Eky Barradas holds a degree in International Relations from the University of Brasília and has spent more than a decade building and operating cross-border businesses across the United States, Brazil, Argentina, Chile, Mexico, Colombia, Peru and New Zealand. He deals with currency exchange, international invoicing and cross-border payments as part of his daily work — the experience behind every guide on TheRateNow.
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