Momentum accounting and triple-entry bookkeeping is an alternative accountancy system developed by Japanese academic Yuji Ijiri and is the title of his 1989 monograph.[1] It is a proposed alternative to double-entry bookkeeping, the method favored by the worldwide financial accounting system.
There are changes with regular double-entry bookkeeping that include balances, earning revenues, and collecting cash. These events are recorded with two entries, usually a debit and a credit, assigned on a given date. In momentum accounting, changes in balances are the recognized events.
An acceleration in revenue earning, such as a $1,000 per period increase of revenues from $10,000 per month to $11,000 per month, is a recordable event that would require three entries to implement.