you is responsibility budget何意?

这句话存在错误。
you are responsible for budget.
你负责预算。
budget is your responsibility.
预算是你负责的。

There is error in your sentence.

Your sentence should be:
You are responsible for the budget.
你负责预算。
The budget is your responsibility.
预算是你负责的。

The article "The" is very important in forming a sentence.

意思是负责预算