Art. 78 CISG
If a party fails to pay the price or any other sum that is in arrears, the other party is entitled to interest on it, without prejudice to any claim for damages recoverable under article 74.
The Secretariat Commentary does not adress Article 78 CISG, since there was no equivalent provision in the 1978 New York Draft, which formed the basis for the Secretariat Commentary.
CISG-AC Opinion regarding Art. 78 CISG
CISG-AC Opinion No. 14 ‘Interest under Article 78 CISG’ (Rapporteur: Yesim Atamer), adopted by the CISG Advisory Council following its 18th meeting in Beijing (China) on 21 and 22 October 2013
Overview of case law on Art. 78 CISG: UNCITRAL Digest
The UNCITRAL Digest on the CISG can be used as a starting point to discover the relevant case law on this article.