Insights

Earned Value Management for Construction Owners, Explained Simply

Oct 20, 2026 · 4 min read · Ben Abbasi, PMP

Hand-drawn line graph with a ruler and pens

Earned value management tells you two things a monthly cost report cannot: whether you are getting the work you are paying for, and where the final cost is heading. For construction owners, it is the simplest early-warning system there is, and you do not need a scheduling degree to use it.

Why "budget spent" is the wrong question

Most owner reports compare money spent to the budget. If half the budget is gone, that sounds like half the job is done. It might be. Or the contractor might be ahead on spending and behind on work. Spend alone cannot tell the difference.

Earned value fixes this by comparing three numbers at the same status date.

The three numbers: PV, EV and AC

The definitions and formulas below follow a PMI paper by Frank Anbari, whose forecast formula is based on the 2000 edition of the PMBOK Guide.

  • Planned value (PV): the time-phased budget baseline. In plain terms, the value of work you planned to have done by now.
  • Earned value (EV): the value of the work actually completed by now, measured at its budgeted cost.
  • Actual cost (AC): what was actually spent to do that work.

Budget at completion (BAC) is the total budget baseline: the last point on the PV curve.

The four formulas owners actually need

  • Cost variance: CV = EV − AC. Negative means overspending for the work done.
  • Schedule variance: SV = EV − PV. Negative means less work done than planned.
  • Cost performance index: CPI = EV ÷ AC. Above 1 is good; 0.90 means you get 90 cents of work for every dollar.
  • Schedule performance index: SPI = EV ÷ PV. Above 1 is ahead; below 1 is behind.

And the forecast: estimate at completion, EAC = AC + (BAC − EV) ÷ CPI, which simplifies to EAC = BAC ÷ CPI. It assumes the remaining work will be done at the same cost efficiency as the work to date.

A worked example (hypothetical)

The numbers below are illustrative only, not from a real project. Picture a 10-month fit-out with a budget at completion of $10.0 million. At the end of month 5:

  • PV = $4.5 million (the plan said this much work would be done)
  • EV = $4.0 million (the work actually in place, at budgeted rates)
  • AC = $4.4 million (what has been spent)

Now the arithmetic:

  • CV = 4.0 − 4.4 = −$0.4 million: overspending for the work done.
  • SV = 4.0 − 4.5 = −$0.5 million of work behind plan.
  • CPI = 4.0 ÷ 4.4 = 0.91.
  • SPI = 4.0 ÷ 4.5 = 0.89.
  • EAC = 10.0 ÷ 0.91 ≈ $11.0 million.

Look at the spend report alone: $4.4 million against a $4.5 million plan looks almost on track. Earned value shows the project is both behind and over cost, heading for roughly a $1 million overrun if nothing changes. That is a month-5 conversation, not a month-10 surprise.

Illustrative example: planned value, earned value and actual cost S-curvesHypothetical 10-month project with a 10 million dollar budget. Planned value rises in an S-curve to 10 million at month 10. At month 5 the status date, planned value is 4.5 million, earned value is 4.0 million and actual cost is 4.4 million. Estimate at completion is about 11.0 million. Illustrative example (hypothetical numbers) $0$2M$4M$6M$8M$10M$12M 0246810 Month Status date (month 5) EAC ≈ $11.0M BAC $10.0M PV $4.5M AC $4.4M EV $4.0M Planned value Earned value Actual cost
Illustrative example only: spending tracks the plan, but earned value lags both, giving CPI 0.91, SPI 0.89 and an EAC near $11.0M. Source: formulas from F. T. Anbari, PMI, 2001; numbers are hypothetical.

What to ask your contractor for

  1. A cost-loaded baseline schedule or schedule of values tied to activities, so PV is time-phased and not just a straight line.
  2. An agreed way of measuring progress for each line: units installed, milestones or weighted steps. Avoid "percent complete by opinion".
  3. Monthly PV, EV and AC at the same status date, by trade package, not only at the project total.
  4. CPI, SPI and EAC trends over time. One bad month is noise; three is a pattern.
  5. A written explanation for any index below 1 and a recovery plan with dates.
  6. Change orders kept separate, so approved scope changes update the baseline openly instead of hiding variances.

One caution: in construction, AC is often the contractor's billed amount, not their true cost. For an owner, that is usually fine, because billings are your cost. Just be clear which you are measuring. Also note that SPI is a cost-weighted measure; it does not replace a critical path review. Our guide on construction cost overrun lessons covers what tends to go wrong next.

Frequently asked questions

Is earned value only for large projects?

No. Any project with a cost-loaded schedule and an agreed progress measure can use it. On small projects, a simple spreadsheet is enough.

What is a good CPI?

A CPI of 1 means on budget; above 1 is better than planned. Below 1 means each dollar is buying less than a dollar of planned work, and it deserves a question.

Can SPI look fine while the project is late?

Yes. SPI weights work by cost, so a contractor can progress expensive non-critical work and look on schedule while the critical path slips. Always read SPI alongside the schedule.

The bottom line

Earned value turns "are we okay?" into three numbers and a forecast. Owners who ask for PV, EV and AC every month see overruns while there is still time to act.

Want help setting up earned value reporting on your next project? Book a 30-minute call with Ben.

Sources: PMI, Applications and Extensions of the Earned Value Analysis Method, F. T. Anbari, 2001; PMI, Earned Value: The Good, the Bad, and the Ugly, C. S. Budd and C. I. Budd, 2003. This article is general information, not financial or legal advice.

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