SWIFT ISO 15022 - Code MAXC Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Maximum Cash: Maximum cash option, may be subject to scaling, as such you may receive a combination of cash and securities outturn. Usages Message type Field number Tag MT564 (Corporate Action Notification) 57 22F (Indicator) MT566 (Corporate Action Confirmation) 41 22a (Indicator)