1, the principle of borrowing goods is equal.

Although the preparation of family financial statements does not need detailed accounting treatment by compiling standardized accounting entries like enterprises, it must also meet the basic requirements of double-entry bookkeeping method when preparing financial statements, that is, "there must be loans when borrowing, and the loans must be even."

2. The principle of correspondence between flow and stock.

Household income and expenditure are flows, which indicate the changes of cash income and expenditure over a period of time; Household assets and liabilities are stocks, indicating the status of assets and liabilities at a certain settlement point (usually at the end of the month, the end of the season or the end of the year). The change of stock is the result of the change of flow, and there is a strict correspondence between them.

Composition of family financial statements:

Balance sheet and monthly income and expenditure statement. The balance sheet is divided into two parts: assets on the left and liabilities on the right. Assets are divided into three parts: current assets, fixed assets and financial assets. It is followed by cash and demand deposits, time deposits, cars, houses, bank financing, funds, stocks, P2P and so on.

For families, the balance sheet and income statement are enough, and the income statement of families is equivalent to the merger of the income statement and cash flow statement of enterprises, because there is often a time difference between the income, expenses and cash flow of enterprises, and families are little affected by this time difference.