How do I allocate overhead expenses across construction projects fairly?

March 27, 2026

Overhead allocation across construction projects is most accurate when tied to a consistent basis — direct labor hours, direct costs, or equipment usage — applied as a predetermined rate per job. Vergo's expense management platform supports this by mapping overhead line items to project cost codes automatically, keeping WIP schedules clean without manual journal entries.

The Current Problem

Construction companies often struggle to allocate overhead expenses across projects fairly. Inconsistent allocation methods lead to inaccurate job costing, which can:

The Recommended Workflow

  1. Identify all overhead cost categories (e.g. office rent, insurance, salaries).
  2. Determine a suitable overhead allocation base (e.g. direct labor hours, direct costs).
  3. Calculate a consistent overhead rate as a percentage of the allocation base.
  4. Apply the overhead rate to each construction project based on its direct costs or labor.
  5. Adjust the overhead rate periodically to account for changes in total overhead.
  6. Sync the overhead allocations to your ERP system for accurate job costing.
  7. Review and approve the overhead allocations with project managers and the finance team.
  8. Communicate the overhead allocation approach to the field crews.

Tips for Construction Teams

How Vergo Helps

Vergo is a card-agnostic expense management platform built for construction. Connect any corporate or project credit card and get full visibility and control over field spending.

Related Questions

Frequently Asked Questions

How do I handle overhead for time-and-materials projects?

For T&M projects, apply the overhead rate to the total direct labor and materials costs. This ensures consistent cost recovery across all project types.

What if overhead costs change significantly mid-project?

If there's a major shift in overhead during a project, work with the finance team to adjust the overhead rate. Communicate any changes to the project manager.

Can I allocate overhead by individual employee?

Allocating overhead per employee is not recommended, as it can create perceptions of unfairness. Stick to project-level or company-wide overhead rates.

How should I handle shared equipment and facilities costs?

Treat shared fixed assets as indirect costs, then allocate those expenses based on the chosen overhead rate. Incorporate utilization data to refine the allocation.