Product
Overview
The commercial operating system for construction. Capture a commercial event once, every downstream workflow stays connected.
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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.
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Solutions
Overview
Built for every side of the contract. One commercial record the whole project team can trust, head contract to supplier.
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For subcontractors
Free to collaborate
Invited to a project? Submit claims and variations in a format that holds up, free forever.
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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.
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Get started
See it on your project
A 30-minute walkthrough on your numbers, where the margin usually leaks.
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Pricing
Blog & Guides

Construction Finance, Plain English.

Practical guides on payment claims, variations, contracts, and managing the commercial side of construction projects in Australia.

27 May 2026security of paymentvictoriavictorian construction law

Victoria's Security of Payment Act 2026 reforms: what every builder needs to know

On 15 April 2026 the Victorian Security of Payment Act was overhauled. A 20 business day cap on payment, abolished reference dates, a new performance security claim regime, and a mandatory 5 business day recourse notice — here's what changed, what's now void in your contracts, and how to legally align supplier claim timing with your own billing rhythm.

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