Letter of Credit Cost Calculator

A letter of credit is a bank-backed payment undertaking used in international trade. The issuing bank pays the seller once the documents presented match the credit exactly, and the buyer does not pay until that documentary proof exists, which moves the payment risk from the two trading parties onto a bank. The cost of that arrangement is what this calculator estimates: an issuance fee that scales with the value and the term, plus the discrepancy charges that arise when documents fail examination.

Banks generally quote the issuance fee per quarter rather than per year, and this calculator follows that convention. A 200,000 credit at 0.5% per quarter running for three months carries an issuance fee of 1,000. Add 50 of discrepancy charges and the total is 1,050, which is 0.53% of the trade value. The same credit over twelve months costs 4,050, or 2.03%, because the fee element runs four times as long while the discrepancy charge does not repeat.

The structure of the credit changes both the cost and the protection. A sight credit pays on presentation of compliant documents; a usance credit defers payment for an agreed period, commonly 30 to 180 days. A confirmed credit adds a second bank's undertaking alongside the issuing bank's, which is used where the issuing bank or its country carries risk the seller is unwilling to hold, and it carries an additional charge. A standby credit sits behind another payment method and is drawn on only if that method fails. Document examination follows the ICC rules that govern documentary credits, which is why compliance is judged against the wording of the credit rather than against commercial reasonableness.

A worked example

The defaults give a 200,000 credit at 0.5% per quarter for a three-month term, with 50 of discrepancy charges. The issuance fee is 1,000, the total is 1,050, and the cost is 0.53% of the credit value.

What moves the number most

Term and fee percentage carry the most weight, and they move the result in proportion. Each additional month adds 333.33 at the loaded values, since a month is a third of a quarter at a 1,000 quarterly fee. Each additional tenth of a percentage point on the fee adds 200 over a three-month term. Raising the credit value by 1% adds 10. Discrepancy charges behave differently: they are a flat amount added once, so moving from 50 to 250 adds exactly 200 regardless of the term or the value, which makes them the dominant component on short, small credits and close to irrelevant on long, large ones.

The formula behind this

The issuance fee is the credit amount times the fee percentage times the term in months divided by three, because the quoted rate covers a quarter. The total adds the discrepancy charges, and the cost percentage divides that total by the credit amount. The divisor is the part most easily got wrong: a rate quoted per quarter but pro-rated across twelve months rather than three understates the fee by a factor of four, and a rate genuinely quoted per annum entered here without conversion overstates it by the same factor. Where a bank quotes an annual rate, dividing it by four before entering it reproduces the correct figure.

What this doesn't capture

Banks commonly apply a minimum charge per credit, so a small credit can cost more than the percentage implies, and this calculator applies no floor. It models a single issuance with one discrepancy amount, rather than a sequence of presentations, amendments and re-presentations. It carries no foreign exchange cost on a credit denominated in a currency neither party uses, no interest cost on cash pledged as security or on a facility line consumed by the credit, and no internal cost of preparing and checking the documents, which for a first-time exporter is often larger than the bank charges.

A time component and a fixed component

The cost has a time component and a fixed component, and short terms make the fixed part dominant. At the defaults, 200,000 at a 0.5% quarterly fee over three months costs 1,000, with 50 in discrepancy charges taking the total to 1,050. Term drives the rest of the ladder: one month costs 383.33, six months 2,050, twelve months 4,050, and the twenty-four month maximum 8,050, which is 4.03% of the face value. The discrepancy charge stays at 50 throughout, so its share of the total falls from 13% at one month to under 1% at twenty-four.

The charges that sit outside the figure

Discrepancy charges are the part most often underestimated, because they are levied per presentation that fails to match the credit exactly, and a first presentation failing examination is a routine outcome in trade documentation rather than an exceptional one. Confirmation charges where a second bank adds its undertaking, amendment fees for changes to the credit after issue, and correspondent bank charges deducted along the payment chain all sit outside this calculation. The figure represents the issuing cost rather than the full landed cost of the instrument.