Momentum accounting and triple-entry book keeping is an alternative accountancy system developed by Japanese academic Yuji Ijiri and the subject of his 1989 monograph.
[1] It is proposed as an alternative to double-entry bookkeeping, which is the standard method used in the worldwide financial accounting system.
Momentum accounting and triple-entry bookkeeping introduce changes to traditional double-entry bookkeeping by tracking balances, revenue earning, and cash collection.
These events are recorded with two entries, typically a debit and a credit, assigned on a specific date.
In momentum accounting, changes in balances are the recognized events.