Budget working capital refers to the working capital set up by governments at all levels to balance the seasonal income and expenditure in the budget year and ensure the timely use of funds. Budget stabilization fund refers to the reserve funds arranged by governments at all levels through over-receipt.

Second, the purpose is different.

Budget working capital refers to a kind of working capital set up by general budgets at all levels to ensure the normal budget revenue and expenditure and avoid the time gap between revenue and expenditure. The budget stabilization fund is set up to make the budget more scientific and reasonable, maintain the stability of the central budget, and is specially used to make up for the income and expenditure gap in the budget implementation in short and abundant years.

Third, the sources are different.

The working capital of the budget can be set and supplemented from the net balance of the financial budget at the corresponding level, and can also be allocated by the financial department at a higher level. The budget stabilization fund is a separate subject of the central budget stabilization fund, which is reflected in the expenditure end when arranging the fund and in the income end when transferring the fund. The arrangement and use of the fund shall be included in the budget management and subject to the supervision of the National People's Congress and its Standing Committee.

References:

Baidu Encyclopedia-Budget Working Capital