A term used in the US and the UK in both statutes and by banks themselves.

1 - sudoc.nhsl.lib.nh.us/rsa/237-10.htm

State of New Hampshire Revised Statutes Online
CHAPTER 237
TURNPIKE SYSTEM
Section 237:10
237:10 Interaccount Transfers. – In the event the balance in the account under RSA 237:24, RSA 237:40 or RSA 237:9 is insufficient at any time to meet the operating expenses, maintenance costs and debt service of the eastern New Hampshire turnpike, the central New Hampshire turnpike or the New Hampshire turnpike system, as the case may be, the treasurer shall transfer the amount necessary to meet the deficiency from the excess income in either or both of the other accounts. In determining which account or accounts to make the transfer from, the treasurer shall be guided by the respective needs of the accounts.


2 - www.ukbusiness.hsbc.com/mrp/mrp00159.jsp

Inter account transfers Find out how you can transfer funds at short notice through
a variety of methods. Did you know you can use your phone or fax as well ?…


3 - www.corporate.barclays.co.uk/bmdemo/how/interacctransfers/ interacccontent.html

Inter-Account Transfers
Being able to transfer funds instantly not only helps minimise overdraft interest and maximise interest earned on surplus funds, but also saves time, reduces paperwork and eliminates the risk of error.

Transfers can be made between your Barclays UK accounts in any Barclays traded currency