UCP 600 Article 30: Examining Commercial Invoices

Introduction

UCP 600 Article 30 establishes tolerance rules for credit amounts, quantities, and unit prices. The commercial invoice is the primary document against which tolerance calculations are applied, as it contains the monetary amounts and quantities that must fall within the applicable tolerances. This guide examines how tolerance calculations interact with commercial invoice examination under UCP 600 and ISBP 745.

Failure Mode Analysis

Failure Mode 1: Applying "About" Tolerance to Unit Prices

Article 30(c) explicitly excludes unit prices from the "about" tolerance. Banks that allow a 10% variance on unit prices violate this provision. The unit price on the invoice must match the credit unit price.

Failure Mode 2: Invoice Amount Exceeding Credit Amount Plus Tolerance

Under Article 30(a), the invoice amount may exceed the credit amount by up to 10% if "about" or "approximately" is used. Banks that reject invoices for minor overruns within tolerance misapply Article 30.

Failure Mode 3: Ignoring Quantity Tolerance on Invoices

Banks sometimes reject invoices because the quantity differs from the credit quantity, without checking whether the difference falls within the applicable tolerance under Article 30(a) or (b).

Failure Mode 4: Tolerance Calculation Errors on Partial Invoices

For partial drawings, the tolerance applies to each individual invoice, not to the cumulative total. Banks that calculate tolerance against the total credit amount rather than the individual drawing amount misapply Article 30.

Failure Mode 5: Confusing Amount Tolerance with Quantity Tolerance

Article 30(a) provides separate tolerances for amount (10%) and quantity (10%). Article 30(b) provides a separate tolerance for quantity (5%). Banks sometimes conflate these provisions, applying the wrong tolerance to the wrong metric.

Deterministic Resolution Architecture

1. Tolerance Applicability Check: Before examining the invoice, determine the applicable tolerance: (a) 10% for amount and quantity if "about" or "approximately" is used, (b) 5% for quantity if no variation prohibition and not in packing units, (c) 0% for unit prices under "about" tolerance.

2. Amount Verification: Calculate the acceptable range for the invoice amount. For a credit amount of USD 100,000 with "about," the acceptable range is USD 90,000–110,000.

3. Quantity Verification: Calculate the acceptable range for the invoice quantity. Apply the applicable tolerance under Article 30(a) or (b).

4. Unit Price Verification: Confirm that the invoice unit price matches the credit unit price. No tolerance applies to unit prices under Article 30(c).

5. Partial Drawing Tolerance: For partial drawings, apply the tolerance to each individual invoice. Document the calculation for each drawing.

6. Cross-Document Consistency: Verify that the invoice amount and quantity are consistent with other documents per Article 14(d). Assess whether any differences constitute conflicts.

7. Documentation: Document all tolerance calculations, including the applicable provision, the calculation methodology, and the resulting acceptable range.

Conclusion

Commercial invoice examination under Article 30 requires precise tolerance calculations across three dimensions: amount, quantity, and unit price. The three sub-articles of Article 30 provide distinct rules for each. Correct application prevents wrongful refusals and ensures that invoices are examined against a clear, documented standard.

FAQ

Q1: If the credit says "about USD 100,000" and the invoice shows USD 108,000, is this acceptable?
A: Yes. Article 30(a) allows a 10% tolerance. USD 108,000 is within the acceptable range of USD 90,000–110,000.

Q2: If the credit says "about USD 100,000" and the invoice unit price is 10% higher, is this acceptable?
A: No. Article 30(c) excludes unit prices from the "about" tolerance. The invoice unit price must match the credit unit price.

Q3: If the credit does not use "about" or "approximately," is there any tolerance?
A: Article 30(b) provides a 5% quantity tolerance if the credit does not prohibit variation and the quantity is not stated in packing units. There is no amount tolerance unless "about" or "approximately" is used.

Q4: Does the tolerance apply to the invoice total or the line items?
A: The tolerance applies to the total invoice amount and quantity. Line items are assessed for consistency with the credit description and total.

Q5: Can the tolerance be increased by credit amendment?
A: Yes. The credit can be amended to include "about" or "approximately," which would then apply the 10% tolerance. However, the amendment must be accepted by all parties per Article 10.

Source Notes

• ICC Academy, "Incoterms 2020" — Context only
• ICC Academy, "11 Questions that will help you master documentary credits" — Context only
• ICC Academy, "A guide to types of documentary credit" — Context only
• ICC Academy, "Certified UCP 600 Specialist (CUCP)" — Context only
• ICC | International Chamber of Commerce, "UCP 600 - Uniform Rules and Practice for Documentary Credits - Including eUCP Version 2.1" — Context only