Estimate-at-Completion Budget Forecasting
Knowing how much of the budget has been spent so far tells you where you are, it doesn't tell you where you're going to land, and most budget reporting stops at the current spend snapshot rather than projecting forward based on the actual cost trend the project has shown so far. A project running 15% over its planned burn rate at the midpoint is likely to land significantly over budget by completion if that trend holds, but without an actual forecast calculation, that math doesn't get done until someone notices the overrun as a fait accompli much closer to the end, when there's far less room to course-correct.
STARTING PRICE
From €799
Complex tier · Multi-system orchestration, custom logic, and higher-volume or higher-risk processing.
Get a quote →Saves roughly 3-5 hrs/month per project in manual forecasting, plus earlier warning on overruns that would otherwise surface near project close.
How the automation works
We calculate a rolling estimate-at-completion from actual cost performance so far, work completed versus cost incurred, projected forward against remaining scope, rather than reporting only current spend against total budget. The forecast updates continuously as new actuals come in, so a trend that's worsening or improving is visible as it develops, not just as a single midpoint snapshot. When the projected final cost crosses a meaningful variance from the approved budget, the PM and sponsor get an early forecast-based alert with enough runway to actually act, renegotiate scope, add budget, or intervene on cost drivers, instead of discovering the overrun as a closing number with no time left to respond.
Process flow
- 01
Load approved budget and baseline trigger
The approved total budget and planned cost curve are loaded as the reference baseline for the project.
- 02
Pull cost and progress actuals integration
Actual cost incurred and percent-complete are pulled continuously from the finance system and PM tool as the project runs.
- 03
Calculate estimate at completion ai
A projected final cost is calculated using the actual cost-performance trend applied forward against remaining scope, not a simple linear extrapolation of spend alone.
- 04
Track the forecast trend output
The projected final cost is tracked over time so the PM can see whether the trend is worsening, stabilizing, or improving as the project progresses.
- 05
Alert on meaningful variance output
When the forecast crosses a defined variance threshold from the approved budget, the PM and sponsor get an early alert with the specific projected overrun or underrun.
Inputs
- Approved total project budget and planned cost curve
- Actual cost incurred to date
- Percent-complete or earned-value data
- Forecast variance alert threshold
Outputs
- Rolling estimate-at-completion forecast
- Forecast trend over time
- Early variance alerts to PM and sponsor
- Cost-performance data feeding the forecast calculation
Works with
Prefer a fully custom build instead of an off-the-shelf integration? We scope both options during your free consultation — most jobs like this one work fine on standard connectors, but higher-volume or non-standard systems sometimes need bespoke API work, reflected in the complex tier.
Where this goes wrong if you get it wrong
- A forecast built early in a project, before enough actual cost data exists to establish a reliable trend, can be noisy and swing widely on small changes, forecasts should be treated as provisional and low-confidence in the first weeks and given more weight as the data set matures.
- Cost-performance trends aren't always linear, a project that's been running efficiently through routine work might hit a genuinely harder, more expensive phase later, and a forecast that simply projects the current trend forward without accounting for known upcoming complexity will understate the real risk.
- An EAC forecast is only as good as the percent-complete or earned-value data feeding it, and percent-complete is often a rough self-reported estimate, a forecast built on inflated progress claims will project a rosier final cost than what's actually likely.
- A forecast alert that fires and turns out to be a false alarm because of a one-off cost spike, an unusual but non-recurring expense, needs context before it triggers a full escalation, the alert should prompt a review of what's driving the trend, not an automatic assumption the project is genuinely off track.
Frequently asked questions
How is this different from simple budget burn rate alerting?
Burn rate alerting flags when current spend pace is outrunning current progress, this projects that trend forward to a specific forecasted final cost, giving a concrete number for where the project is likely to land, not just a pace warning.
How reliable is the forecast early in a project's life?
Less reliable in the first weeks before a stable cost-performance trend has developed, forecasts should be given more weight as more actual data accumulates through the project.
Does the forecast account for known future phases that cost differently than work done so far?
It can, if remaining scope is broken down with different cost expectations per phase, a flat extrapolation of the current trend is the simpler default but a phased forecast is more accurate where the data supports it.
What should happen when the forecast shows a significant projected overrun?
It should trigger a real conversation about scope, budget, or cost drivers while there's still time to act, the forecast is meant to create decision runway, not just document the eventual outcome earlier.