An accrual-type adjusting entry is a journal entry recorded at the end of a reporting period that alters the amount of revenues or expenses recorded in the income statement. The four types of accrual-type adjusting entries are:
An expense increase for expenses that have been incurred, but for which no supplier invoice has yet been received.
An expense decrease for expenses that have been recognized, but which have not yet been incurred.
A revenue increase for revenues that have been earned, but for which no customer invoice has yet been created.
A revenue decrease for revenues that have been recognized, but which have not yet been earned.