Budgeting at the company code level

Hi Experts,

My client is in Sales and Distribtuion company and they are having sales budget and procurement budget along with financial budget at the company code level down to the branches.And also they will budgeted the advertisement and sales promotion expenses based on sales value and quantity.

And we are not using any Treasury and Cash Management,Fund Management modules but client is asking the above requirement so How we can do the same ?

Guide me in this and I will award you the points.