A to Z of financial terms

See our definitions to help you understand financial and legal terms.

First published: 20/03/2023 Last updated: 20/03/2023

This is a new service and we are still building our library of terms - please let us know any comments or suggestions for new definitions in the page feedback section below.

Open banking

Open banking is a term used to describe a set of technologies and standards that allow consumers to safely and securely share their account information, for example through apps and websites. Read more about OpenBanking on MoneyHelper's website.


A derivative contract that grants the owner the right to acquire or dispose of assets at a specific price, on or before a specific date. Because they're high risk, they're not suitable for all customers. Our rules mean that these products must be marketed and sold appropriately to the right customers.