Article 18 — Commercial Invoice: Invoice Amount and Tolerance Under Article 30

Introduction

UCP 600 Article 18 governs commercial invoices presented under documentary credits. Article 30 establishes tolerances for amounts, quantities, and unit prices. When the invoice amount does not comply with the credit terms or applicable tolerances, the presentation is discrepant. This guide examines the regulatory framework, failure scenarios, and resolution process for invoice amount discrepancies.

Failure Mode Analysis

Failure 1: Invoice Amount Exceeds the Credit Amount

The credit is for USD 100,000 and the invoice is for USD 102,000. Without the word "approximately" in the credit, the invoice exceeds the credit amount and is discrepant.

Failure 2: Invoice Amount Is Less Than the Credit Amount

The credit is for USD 100,000 and the invoice is for USD 95,000. While Article 30(a) allows a 5% tolerance, the invoice amount must still comply with the credit's quantity and amount provisions.

Failure 3: Invoice Amount Exceeds the Tolerance Threshold

The credit is for USD 100,000 with "approximately." The invoice is for USD 112,000 (a 12% increase). The 10% tolerance under Article 30(c) is exceeded. The invoice is discrepant.

Failure 4: Invoice Unit Price Does Not Match the Credit

The credit specifies a unit price of USD 10 per unit. The invoice shows USD 10.60 per unit (a 6% increase). Article 30(b) allows a 5% tolerance. The invoice exceeds the tolerance and is discrepant.

Deterministic Resolution Architecture

Step 1: Extract the Credit Amount and Any Quantity/Unit Price Terms

Identify the credit amount, quantity, unit price, and any tolerance language (approximately, about, circa).

Step 2: Calculate the Applicable Tolerance

Under Article 30(a), the tolerance is the lesser of 5% of quantity or 5% of the credit amount. Under Article 30(c), "approximately" allows 10%.

Step 3: Compare the Invoice Amount Against the Credit Amount and Tolerance

Calculate whether the invoice amount falls within the applicable tolerance. Note any over or under amount.

Step 4: Check Unit Price Tolerance

If the credit stipulates a unit price, verify that the invoice unit price is within the 5% tolerance under Article 30(b).

Step 5: Issue a Discrepancy Notice

If the invoice amount exceeds the credit amount or applicable tolerance, issue a refusal notice under Article 16.

Step 6: Request Beneficiary to Correct the Invoice

The beneficiary must issue a corrected commercial invoice that complies with the credit amount and tolerance provisions.

Step 7: Verify the Corrected Invoice

The examining bank verifies that the corrected invoice amount is within the credit amount and applicable tolerances.

Conclusion

Invoice amount discrepancies are among the most common documentary credit discrepancies. The tolerance provisions under Article 30 provide a safety margin for minor variations, but invoices that exceed the credit amount or tolerance thresholds must be refused. Beneficiaries should verify invoice amounts against the credit terms before presentation.

FAQ

Can the credit eliminate the 5% tolerance?

Yes. Article 30(a) states the tolerance applies "unless the credit stipulates a quantity or amount that must not be exceeded." If the credit expressly states "no tolerance," the 5% tolerance does not apply.

Does the tolerance apply to each invoice or the total presentation?

If the credit allows partial drawings, each invoice is examined individually against the credit amount and quantity provisions.

What if the invoice shows the correct amount but in a different currency?

The invoice amount must be in the currency of the credit unless the credit permits otherwise. A different currency is a discrepancy.

Can the bank accept an invoice with a different unit price if the total is within the credit amount?

No. The unit price must comply with the credit terms or fall within the 5% tolerance under Article 30(b). The total amount is a separate calculation.

Does "approximately" apply to the unit price as well as the total amount?

Yes. "Approximately" under Article 30(c) allows a 10% tolerance for both the credit amount and the unit price.

Source Notes

Context only. The source dossier returned the following sources for this topic. The underlying query was: "article 18 commercial invoice invoice amount multi-family documentary credit site:iccwbo.org"

• Incoterms® 2020 — ICC (Published 29 Mar 2023)

• Context: Incoterms rules determine the allocation of costs. The commercial invoice amount should reflect the agreed price under the applicable Incoterms terms.

• UCP 600 - Including eUCP Version 2.1 — ICC (Published 31 Jul 2023)

• Context: The full text of UCP 600 establishes the commercial invoice requirements under Article 18 and the tolerance provisions under Article 30.

• Uniform Rules for Documentary Credits (UCP 600) - eBook — ICC Academy (Published 12 Dec 2024)

• Context: The UCP 600 text provides the primary source for invoice amount requirements and tolerance calculations.

• Commentary on UCP 600 — ICC (Published 02 Aug 2019)

• Context: The ICC Commentary provides official interpretation of Articles 18 and 30, including tolerance calculations and common invoice discrepancies.

• Certified UCP 600 Specialist (CUCP) — ICC Academy (Published 12 Jul 2025)

• Context: The CUCP certification covers commercial invoice requirements and tolerance calculations as core competency areas.