What is PIS? Naomi June 08, 2018 10:24 Updated Follow PIS stands for Payment Initiation Services. It is performed by a Payment Initiation Service Provider (“PISP”) who can, with the consent of the end-user, initiate a payment on their behalf between multiple accounts the end-user holds. Related articles What is AIS? Do I need to be regulated to provide AIS ? What is a PSU? Do I need to be regulated to provide PIS ? Who regulates UK firms under PSD2? Comments 0 comments Please sign in to leave a comment.