The cash method or basis of accounting recognizes revenues (earnings) in the period the cash is received and expenses in the period when the cash payments are made. Actually, two types of cash methods (basis) of accounting exist

strict cash method (basis)
modified cash method (basis)

A strict cash method follows the cash flow exactly. A modified cash method includes some elements from the accrual method of accounting and provides special methods for handling items such as inventory and cost of goods sold, payroll tax expenses and liabilities, and recording and depreciating property and equipment.

Many small businesses, whether they know it or not, are actually using a modified cash method.
Many small businesses start out using the cash basis rather than the accrual basis of accounting.