COM30060 - Background: company taxation overview: credit and debit interest
The regulations introducing quarterly instalment payments (QIPs) of tax by large companies took effect at the same time as the introduction of CTSA. From 01 April 2019 changes to this regulation introduced Very Large companies
Those regulations impose debit interest on companies that are liable to make instalments.
The same regulations also entitle all companies to be paid credit interest by HMRC if they pay tax earlier than the normal due date.
See: