In Primavera P6, we have a feature called Cost Account.
What is it used for? I will explain in this article.
When we assign resource to activity, it create cost.
We can group the cost in activity level. It mean group activity by WBS or Activity code… and cost will be rolled up.
How about we want to group by very detail level, in the resource assignment tab.
For example, we have a simple project.
Activity A1000 is constructed by contractor A and B.
And we go to much more detail that Contractor A will do 2 job which belong to different Cost Account.
We will show Cost Account column and assign value for it.
So we will break down contractor A into 2 item. And assign them different cost account.
We can go to Resource Assignments window and group by Cost Account.
Primavera will group cost to Cost Account.
So when ever we need to Group cost in very detail level (Even in one activity, one contractor can create different kind of cost), use the Cost Account.
Khuong Do Blog 
The cost account can also be used to group cost under correct control line. Using Capital project as example with US Federal funding grouping:
1. Construction, Fixed Equipment
Resources & Materials
2. Administration, Moveable Equipment
3. Engineering
Assigning cost account then it can be group to pull reports for the major cost control lines.
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Thanks for your sharing Donnell. It’s very helpful
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Thank you for this article, it’s do useful
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Would like to get an article regarding cost loading and monitoring and updating in schedule
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Hi Anil,
You can refer to this article regarding Assign resource. By assigning resource, our schedule will have cost.
https://doduykhuong.com/2017/03/07/how-to-assign-resource-resource-loading-make-resource-plan-in-primavera-p6/
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