Product
Overview
The commercial operating system for construction. Capture a commercial event once, every downstream workflow stays connected.
See the whole product →
Contract models
Fixed, cost plus & open book
Claim a fixed sum, reimburse at actual cost, or bill fully open book. ClaimStack handles each, the right way.
See how →
Solutions
Overview
Built for every side of the contract. One commercial record the whole project team can trust, head contract to supplier.
See how it fits your role →
For subcontractors
Free to collaborate
Invited to a project? Submit claims and variations in a format that holds up, free forever.
See the plan →
Resources
Overview
Practical guides on claims, variations and contracts, plus how ClaimStack connects, who's behind it, and how we keep your commercial data safe.
Read the blog →
Get started
See it on your project
A 30-minute walkthrough on your numbers, where the margin usually leaks.
Book a demo →
Pricing
The product

One system for commercial truth.

Procurement, contracts, variations, claims, forecasting and reporting, captured once, connected always. Not eight tools pretending to be a system. Here is the whole of it, on one record.

One entry, at the source
A variation · a claim · a commitment
The operating system
ClaimStack
One connected record
Connected always · every workflow
Capture once. Every workflow above reads the same event, so the register, forecast, cashflow and cost report always agree, to the cent. Open any module to see it in the product.

One platform. One workflow. Zero re-keying.

Every module above is a view onto the same commercial record, not a separate app you reconcile at month-end. This is the live cost report, built the instant you open it.

01 · Capture

Record the event where it happens.

A variation, a claim, a commitment, entered once, at the source, with its breakdown and evidence attached. No inbox relay, no commercial manager holding it in their head.

VO-014 · Latent condition
Additional piling to grid H
Submitted
Submitted
Approved
Additional bored piers to grid H$48,000
Extended piling rig standby$16,500
Additional reinforcement and concrete$14,200
Survey, set-out and supervision$5,800
Subtotal (ex GST)$84,500
GST 10%$8,450
Total (inc GST)$92,950
Evidence attached
Geotechnical report.pdfSite diary 18–24 Jun.pdfRig standby records.xlsxBore log photos ×6
02 · Connect

Every workflow stays connected.

Approve that event and it moves everywhere at once: the contract sum lifts, the cost report reflects it, the forecast and cashflow follow, each reconciling to the same figure to the cent.

VO-014 · Assessed
Reflected in the cost report
Reconciled
Assessed variation (ex GST)+$79,600
Original contract sum$18,420,000
Approved variations to date+$308,650
This variation+$79,600
Current contract sum$18,808,250
Cost reportShown in the cost report, yours to use in the position
+$79,600
03 · Report

Report on reality, not history.

A cost report built from the live commercial record, current the moment you open it, not reconstructed at month-end. Budget, committed, forecast and actual on one line, every number traceable to its event.

03-200 · Structure
Concrete structure
Subcontract
Budget$4,260,000
Committed$4,180,00098% of budget
Forecast$4,310,000
Actual$2,980,000Paid to date
Variance −$50,000Live, reconciled from the record
How it connects

Capture once. Connect always. Reconcile to the cent.

01
Captured once

A variation, claim or commitment is entered at the source, by whoever raises it. No inbox relay, no re-keying, no version stitched together later.

02
Connected always

The register, forecast, cashflow and cost report all read the same event. Change the truth once and every downstream view moves with it.

03
Reconciled to the cent

Every view is assessed against the same live position, so claimed, assessed and reported never drift apart. One record the whole team can stand behind.

1
Entry per event
0
Re-keying
16
Workflows connected
The system remembers
See the workflow
on your project.