Finance

What is actual cost in construction?

Actual cost is the money a job has really consumed so far: posted labor, materials, subcontractor billings, equipment, and other charges. It is the number you hold up against the budget to see if the job is making money.

An office manager and contractor review invoices with a calculator and laptop in a construction office.
Review invoices, committed costs, and cash timing together before making project decisions. AI-generated illustration.

Actual cost is the total recorded cost of work performed on a job to date. It includes labor hours at their burdened rate, material invoices, subcontractor pay applications, equipment charges, permits, and any other job cost posted to the job's cost codes. It is a history number. It tells you what has been spent, not what is left.

Estimators work with the budget. Project managers live with actual cost. The difference between the two, by cost code, is where margin is won or lost.

How actual cost works on a real job

Take a $480,000 tenant improvement. The framing and drywall cost code is budgeted at $92,000. Six weeks in, the job cost report shows these postings against that code:

Example: actual cost on one cost code after six weeks
ChargeAmount
Self-performed framing labor (burdened)$21,400
Metal studs and track$9,800
Drywall sub pay app #1$24,000
Lift rental$2,100
Actual cost to date$57,300

That $57,300 means nothing by itself. The PM needs to know how much of the scope is done. If the framing is finished and board is about 40 percent hung, the work might be roughly 60 percent complete. Sixty percent of $92,000 is $55,200, so this code is running about $2,100 over what it should have cost by now.

In earned value language, actual cost is the AC (older texts call it ACWP, actual cost of work performed). Earned value is what the completed work was worth in the budget. Compare the two and you get a cost variance; add a fresh forecast of remaining work and you get estimate at completion.

Where actual cost goes wrong

  • Timing gaps. A supplier invoice that has not been entered is still a cost. Actual cost that lags the field by three weeks makes every job look healthier than it is. Track committed costs so open POs and subcontracts show up before the bills do.
  • Miscoded time. If the foreman puts everyone on general labor, the framing code looks cheap and general conditions looks bloated. Neither is true.
  • Unburdened labor. Posting labor at base wage only leaves out payroll taxes, insurance, and benefits, which can understate labor cost a lot.
  • Change order work mixed in. Costs for an approved change order should go to their own code so you can see whether the change made money.
  • Stored materials. Material sitting in the yard for a future phase is an actual cost, but the work it represents is not done yet, so percent complete by cost can overstate progress.

Actual cost versus budget and cost to complete

Actual cost is one of three numbers a PM should see side by side for every code: the current budget (original plus approved changes), the actual cost to date, and the cost to complete. Add actual cost and cost to complete and you get the projected final cost. Compare that to the budget and you have the projected budget variance. A weekly review of those three columns catches fade early. See how to run a weekly job cost review.

Related terms

Actual cost connects to job costing, the job cost report, direct costs, and the WIP report. Smart Business Automator posts invoices, change orders, and subcontractor billings to the job as they come in, so the actual cost column stays current. See job costing and WIP automation.

Frequently asked questions

Is actual cost the same as job cost?

Mostly. Job cost usually refers to the whole system of tracking costs by job and cost code. Actual cost is the dollar figure that system shows as spent to date.

Does actual cost include overhead?

Usually not. Most contractors post only direct job costs to a job and recover company overhead through markup. Some add an overhead allocation for internal reports, but it should be labeled so it is not confused with field costs.

What is the difference between actual cost and committed cost?

Committed cost is money you have agreed to spend through purchase orders and subcontracts. Actual cost is what has been invoiced or paid and posted. Committed minus actual is what is still coming.

Why does actual cost look low early in a job?

Because invoices lag the work. Subs bill monthly and suppliers invoice after delivery, so early actual cost often understates the real spend unless commitments are tracked too.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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