What is accrual basis accounting?

Is the basis of the revenue interview in the period in which it was incurred

Accrual basis accounting: -Expenses are reported on the income statement in the period when they occur or expire -Revenues are reported on the income statement when they are earned.

Accrual basis accounting recognizes revenue and expenses when services are delivered or received  

Under accrual basis accounting

Revenue recognition: when revenue is earned

Expense recognition: when related revenue is recognized