Now here is the part 2 of my bookkeeping tutorials. I will be discussing the Income and Expense accounts. Income is the revenue that a business earns from selling of goods and services. Increase in Income or Revenue - Credit while decrease in Income is Debit. On the other hand, Expense is a cost of an asset used by a business to produce income. It is also created not only when cash is paid but also when an asset is used up (in case of depreciation). Expense is a contra account with debit balance. Income and Expense are Income Statement accounts. Income Statement is also known as Profit and Loss statement / Statement of Revenue and Expense, it is a financial statement that reports the company's financial performance or results of operations for over an accounting period. Important Equation: Revenue - Expenses = Net Income / (Net Loss) Example 1: Sold merchandise at P100,000.00, 50% cash and balance on account. Journal entry: ...