You negotiated the unit price down 9%. You optimized the freight. You even squeezed free samples out of your supplier. Then you handed your bank a wire transfer form, paid $45 in fees and a 1.8% exchange-rate spread, and quietly gave back a slice of everything you just saved. For small importers, the payment method is the last un-audited line item in the supplier money engine — and for most, it is leaking hundreds of dollars per order without anyone noticing.
The two main ways to pay an overseas supplier are a letter of credit (L/C) and a wire transfer (T/T). Both move money from your account to the factory’s. Both are accepted by virtually every supplier on Alibaba, 1688, and Global Sources. But they are not interchangeable: an L/C can cost you 5 to 10 times more per transaction, while a wire transfer carries fraud risk that an L/C eliminates. Choosing wrong in either direction is a real money leak — and this comparison shows exactly which one to use, when, and how much it saves.
The short version: for most small importers placing orders under $10,000 with verified suppliers, wire transfers save roughly $250 to $350 per order compared to letters of credit. If you place 12 to 14 orders a year — a realistic cadence for a growing import business — that is $3,000 to $4,900 a year back in your pocket, just from matching the payment method to the risk. Here is the full math, the traps, and the decision framework that gets you there.
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What a Letter of Credit Actually Costs You
A letter of credit is a bank’s promise to pay your supplier once they present the documents you specified — commercial invoice, packing list, bill of lading, and usually a certificate of inspection. It is the safest way to buy from an unknown factory, because your money only leaves your account when the shipment documentation matches your order. But that safety is priced like insurance, and small importers rarely see the full bill until it is itemized.
Here is what a typical L/C for a $5,000 order actually costs, based on published fee schedules from major trade banks:
- Issuance fee: 0.125% to 0.5% of the L/C value, with a minimum charge of $50 to $100. On a $5,000 order, that is roughly $50 to $250.
- Amendment fees: $40 to $150 every time the L/C terms change. One changed delivery date or price revision after issuance easily triggers this.
- Negotiation / document-checking fee: $50 to $100 per presentation, charged when your supplier submits documents for payment.
- Discrepancy fees: $50 to $120 per set of documents, and here is the kicker — industry data shows 20% to 30% of first-time L/C presentations contain discrepancies that trigger these charges.
- Bank-to-bank courier and telex fees: $20 to $60 on top.
Add it up: a clean, simple $5,000 L/C typically lands between $180 and $400 in total bank charges. Add one amendment and one discrepancy round, and you are closer to $450 to $600. That is 4% to 12% of your order value — on a product category where most small importers are fighting for a 25% to 35% gross margin. And unlike a wire fee, these charges are mostly invisible until the statement arrives, because they are deducted by multiple banks in different countries along the way.
What a Wire Transfer Actually Costs You
A wire transfer — telegraphic transfer, or T/T in trade terms — is a direct electronic transfer from your bank account to your supplier’s account. It is faster, simpler, and dramatically cheaper than an L/C. The catch: once the money leaves your account, it is gone. There is no bank checking documents, no conditional release, no built-in fraud protection. If the supplier disappears, your bank will not get the money back.
For a typical $5,000 supplier payment, the real cost of a wire breaks down like this:
- Outgoing wire fee: $25 to $50 at most US and EU banks, or $15 to $25 through online business banking tiers.
- FX spread: the difference between the interbank rate and the rate your bank quotes. For USD to CNY or USD to EUR payments, banks commonly build in 1% to 3%. On $5,000, that is $50 to $150 of hidden cost.
- Intermediary bank charges: $15 to $40 deducted mid-route when the transfer passes through a correspondent bank.
- Receiving bank fee: $10 to $30 charged to your supplier — which, in practice, often becomes your cost when the supplier adds it to the next quote.
All-in, a realistic $5,000 wire costs $100 to $250 in fees and FX spread — about half the cost of a clean L/C, and a third of the cost of a messy one. And if you use a modern FX-forwarding service instead of your traditional bank, the spread drops to 0.3% to 0.6%, bringing the total under $80. That is the good news. The bad news is that the wire’s low cost is exactly why fraudsters love it: FBI IC3 data consistently shows that business email compromise (BEC) scams — where a fake supplier email redirects your wire to a criminal account — cost small businesses hundreds of millions of dollars a year, with individual losses averaging $25,000 to $75,000 per incident.
The $4,200-a-Year Math: When Each Payment Method Wins
Here is where the comparison turns into a decision. The right payment method depends on one variable only: how sure you are that the supplier will deliver what they promised. Everything else — bank fees, speed, convenience — is secondary to that single question, because the downside of a bad wire is losing 100% of your payment, while the downside of an unnecessary L/C is losing 5% to 10% of it in fees.
Run the numbers on a typical small-importer profile: 12 orders per year, average order value $5,000, total annual supplier spend $60,000. With a letter of credit on every order at an average all-in cost of $350, you spend $4,200 a year on payment mechanics alone. Switch to wires for the 10 orders placed with suppliers you have already verified and reordered from — costing $150 each all-in — and use L/Cs only for the 2 first-time or high-risk orders at $350 each. Your total drops to $1,500 + $700 = $2,200. That is $2,000 saved immediately.
Push it further: move the wire volume to a low-spread FX service, and the per-wire cost falls to around $80. Your new total is $800 + $700 = $1,500 — a $2,700 annual saving on the same $60,000 of orders. And if your business grows to 18 orders a year with 15 on wire, the gap widens to $4,000-plus. The savings scale with your order count, which is why payment-method optimization belongs in the same monthly review as your landed-cost calculation workbook.
To be fair to the L/C: it is not a waste of money in every scenario. When a supplier is unverified, when the order value exceeds what you can afford to lose, or when you are buying from a country with weak commercial enforcement, the L/C’s 5% to 10% fee is cheap insurance against a 100% loss. The money-losing move is not using L/Cs — it is using them indiscriminately, on every order, including the ones where the risk is already zero.
The 4-Step Payment Method Decision Framework
Stop guessing and start classifying. This four-step framework takes about 20 minutes to apply to your current supplier list, and it immediately tells you which payment method belongs on each order:
Step 1: Score every active supplier on verification status. Have you completed the full supplier verification process — video call, business license check, third-party inspection, and at least one successful delivered order? If yes on all four, the supplier is wire-safe. If any answer is no, they are L/C territory until the gaps close.
Step 2: Cap your wire exposure per supplier. A useful rule of thumb from trade credit insurers: never wire more than 30% of your monthly revenue to a single unverified supplier. For a business doing $10,000 a month, that is a $3,000 ceiling. Orders above the ceiling move to L/C, milestone payments, or a lower-fee transfer method until trust builds.
Step 3: Use the deposit split for mid-risk orders. The compromise position: 30% deposit by wire (so the factory can buy materials), 70% balance by wire only after you receive the inspection report and bill of lading. This hybrid captures most of the L/C’s protection at roughly a third of the cost, and it is the structure most experienced small importers actually use.
Step 4: Re-score every 90 days. Payment method is not a one-time decision. Every time a supplier delivers cleanly on time, their risk score drops and one more order can move from L/C to wire. Put a 90-day re-scoring reminder in your calendar — the same rhythm as your quarterly supplier review — and the savings compound automatically as your supplier relationships mature.
How to Negotiate Payment Method Costs With Your Supplier
Most importers assume payment fees are a fixed cost set by banks. In practice, you can cut them from both sides of the transaction. First, the supplier side: many factories quote prices assuming they will receive payment by T/T with a 30% deposit, and they build their own bank fees and FX costs into the unit price. Ask directly, “What is your price if we pay by wire versus letter of credit?” The difference is often 2% to 4% of the order value — and if the L/C price is higher, that gap is your negotiation lever to push the supplier toward accepting the cheaper method.
Second, the bank side: your bank’s published wire fee is a starting point, not a final price. If you move $5,000 or more monthly in supplier payments, ask for a business-banking tier with reduced wire fees — $15 to $20 instead of $45 — and a better FX spread. Banks routinely grant these to customers who ask, because they would rather keep the volume than lose it to a fintech competitor. One 15-minute phone call per year is worth $200 to $400 in reduced fees at typical small-importer volumes.
Third, the timing side: exchange rates move 1% to 2% in a typical month, which on a $5,000 order is $50 to $100 of swing — more than the entire wire fee. If you know a payment is coming in 30 days, a forward contract or a limit order on an FX service locks today’s rate and eliminates the spread gamble entirely. This is the same discipline as the hidden-cost traps in your landed-cost calculation — the fee you can schedule is the fee you can control.
Finally, consolidate payments. Instead of wiring $5,000 every month, negotiate with your supplier to pay in two-month cycles of $10,000. You halve the number of wire fees and FX spreads you pay per year — typically saving $150 to $300 annually with zero change to your ordering schedule. Suppliers usually accept this because it reduces their own bank reconciliation work, especially if you sweeten the deal with a firm order calendar.
Frequently Asked Questions
Is a letter of credit worth it for small orders? Generally no, for orders under $5,000 to verified suppliers. The all-in cost of 4% to 12% of order value rarely beats the risk it insures against at that size. Reserve L/Cs for first-time suppliers, orders you cannot afford to lose, or countries with weak commercial enforcement.
What is the safest way to pay a new supplier? The safest is a letter of credit with a required inspection certificate among the documents — the bank will not pay until the inspection report is presented. The most cost-effective safe alternative is a 30% wire deposit plus 70% on inspection report and bill of lading, which covers most of the risk at about a third of the L/C cost.
Can a supplier steal your money with a wire transfer? Yes — if the supplier is fraudulent or if their payment email is compromised in a business email compromise scam. That is why wires should only go to verified suppliers, and why you should confirm bank details by video call or phone before every first payment, never by email alone.
How much does a typical wire transfer to China cost? A bank wire to China typically costs $40 to $250 all-in for a $5,000 payment, including the outgoing fee, FX spread of 1% to 3%, and intermediary bank charges. Using a low-spread FX service can bring the total under $80.
Do suppliers prefer L/C or T/T? Most suppliers strongly prefer T/T because they get paid faster and without document-discrepancy risk. You can use this as leverage: suppliers often offer a 1% to 3% price discount for T/T payment, which is additional savings on top of the fee difference.
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