What is the meaning of budget audit and final accounts in the project?

The professional explanation must be very long. Let me say it in simple English:

Budget: Before the project construction, calculate the price and control it as the construction price of the "house". For investors, the question is how much it costs to build a house.

Audit: In order to reflect fairness, audit is an extension of budget and final accounts, which is implemented by a third party to verify its rationality and legitimacy. Generally speaking, projects invested by the state or using state investment funds must be audited. If there is no state funds, they can decide whether to audit.

Final accounts: after the completion of the project, the price will be recalculated, of course, not to overthrow the original budget, but to modify it on the basis of the budget and the contract, because during the construction process, the drawings will always change, and the market price of materials will also change, even including policy things.

Budget and final accounts: it is the general name of budget and final accounts. Budget and final accounts are also a job. Generally, the budget and final accounts are completed by the same person.