Confirmed Letter of Credit Explained: Definition and Examples

A confirmed letter of credit is a payment guarantee backed by two banks instead of one, where a second bank agrees to pay a seller if the buyer's original bank cannot or will not honor its commitment. It adds a layer of protection in deals where trust in the first bank is shaky.

Why a Second Bank Gets Involved

Letters of credit show up most often in international trade, where sellers ship goods worth real money and cannot afford to gamble on a stranger's promise to pay. Rather than asking a buyer to wire cash upfront, a seller will often insist on a letter of credit covering the balance due at delivery. The buyer's bank issues this letter, essentially vouching that payment will arrive on schedule and in full. Should the buyer fall short of the deal's terms, the bank steps in to cover what's owed. These letters usually run for a set window, often around 90 days, so they are not open ended promises.

Trouble is, a seller located halfway across the world may have never heard of the buyer's bank. Maybe that bank sits in a country with a wobbly banking sector, or maybe the seller simply wants more certainty. That's when a confirmed letter of credit enters the picture. A second bank, frequently the seller's own bank, agrees to make good on the payment if the first bank drops the ball. The seller ends up with a guarantee from an institution it already knows and trusts.

Setting Up the Second Guarantee

Arranging a confirmed letter of credit mirrors the process of getting the original one. The buyer has to line up a bank willing to back the purchase in case of default, and the terms of that second letter typically build on whatever was already spelled out in the first. Sometimes the seller does not need the second bank to guarantee the entire amount; a percentage of the total will do.

One rule that never bends: the same bank cannot issue both letters. The whole point is independent backing, so the confirming bank has to be a separate institution from the one that issued the original letter.

Banks do not provide this extra assurance free of charge. They can charge the buyer a fee for confirming the letter, and that fee shifts depending on the size of the deal and how well the buyer's bank knows the buyer. Some banks will also ask for collateral, whether that's cash or securities, before they agree to issue the confirmed letter. The added cost buys down risk, which is the tradeoff at the heart of this whole arrangement.

Confirmed Versus Unconfirmed: What Changes

Not every transaction needs two banks standing behind it. If a seller already trusts the buyer's issuing bank, it can simply accept that single guarantee, known as an unconfirmed letter of credit. Only one bank's word is on the line in that setup. The choice between confirmed and unconfirmed usually comes down to how well the seller knows the buyer's bank and how comfortable it feels with the financial stability of the buyer's home country.

Feature	Confirmed Letter of Credit	Unconfirmed Letter of Credit
Number of banks guaranteeing payment	Two	One
Typical use case	Unfamiliar or higher risk issuing bank, cross border deals	Seller already trusts the issuing bank
Cost to buyer	Higher, includes confirming bank fee	Lower
Risk to seller	Lower, backed by a second institution	Higher, relies solely on issuing bank
Collateral requirement	Often required by confirming bank	Depends on issuing bank's terms

What This Looks Like in a Real Transaction

Picture Company A buying supplies from Company B, based in another country. Company B wants a letter of credit before shipping anything, so Company A arranges one through its bank and sends it along. But Company B has no way of judging the creditworthiness of a foreign bank it has never dealt with, so it asks Company A for a second letter of credit issued by a different bank, ideally one Company B already has a relationship with. Company A applies for that second letter through the seller's bank, and once it's issued, the deal typically moves forward because the seller now has a guarantee from an institution it trusts.

Two businesspeople shake hands over a signed trade finance document as a bank officer looks on.

The Advantages and the Cost Tradeoff

Both parties gain something from a confirmed letter of credit, even though the buyer usually pays for it. The seller gets assurance that payment will land once goods or services are delivered, and if the buyer defaults, a second bank is on the hook to cover the shortfall. That lowers the odds of nonpayment considerably, since two separate institutions would both have to fail for the seller to go unpaid.

Buyers benefit too, in a less obvious way. They avoid having to pay cash in advance, and they gain credibility with sellers who might otherwise walk away from the deal over financing concerns. Confirmed letters of credit essentially let a buyer stretch out payment timing while giving the seller enough comfort to ship the goods. To obtain one, a buyer works through its bank on what amounts to a full credit application, similar to applying for a loan. The bank structures any eventual payout as a loan to the buyer, complete with an interest rate and a repayment schedule.

A revolving letter of credit differs in scope. Instead of covering one shipment or one deal, it spans a series of transactions between the same buyer and seller over time, which suits ongoing supply relationships rather than one off purchases. A commercial letter of credit works differently too: the issuing bank pays the seller directly, without the added confirmation step from a second institution.

How Much Confirmation Is Enough for a Given Deal?

The decision to confirm a letter of credit really comes down to how much unknown risk a seller is willing to carry. In stable trading relationships with well known banks, a single guarantee often does the job just fine. But when a shipment is heading into unfamiliar territory, whether that's an unfamiliar bank or a country with shakier financial footing, paying the extra fee for a second guarantee tends to look cheap compared to the alternative of not getting paid at all. Buyers and sellers negotiating new international relationships will keep leaning on this tool as long as global trade keeps crossing borders where trust has to be built one transaction at a time.