Judgment_paragraph 55 · European Commission v Printeos, SA (C-301/19 P)

55In that regard, it is clear from the case-law of the Court of Justice that the obligation to pay default interest is designed to compensate at a standard rate for the loss of enjoyment of the monies owed and to encourage the debtor to pay monies owed as soon as possible (see, to that effect, judgment of 12 February 2015, Commission v IPK International, C‑336/13 P, EU:C:2015:83, paragraph 30). Such an obligation can arise only where the amount of the principal sum owed is certain or can at least be ascertained on the basis of established objective factors.