Startup · $3.8m raised

CalcTree

calculation management platform

Investors

Every investor coverage indicates participated in a round CalcTree raised.

Investor	Rounds	Invested
Antler Australia	Pre-seed	-
Autodesk	Pre-seed	-
Bentley	Pre-seed	-
Foundamental	Pre-seed	-
Kungari	Pre-seed	-
Standards Australia	Pre-seed	-
Suffolk Technologies	Pre-seed	-

What CalcTree bought

Companies CalcTree acquired or merged with, per published coverage. Buying a company is not investing in one: nothing here counts in the deals column.

Company	Kind	Announced	Price	Sources
CalcTree is not recorded as having acquired anything.

People

Name	Role	Sources
Mahan Lamei	Founder	SmartCompany (30 May 2025), Startup Daily (28 May 2025), SmartCompany (28 May 2025), Startup Daily (15 Dec 2021)
Onur Ekinci	CEO · Founder	SmartCompany (30 May 2025), Startup Daily (28 May 2025), SmartCompany (28 May 2025), Startup Daily (15 Dec 2021)
Tim Rawling	Founder	SmartCompany (30 May 2025), Startup Daily (28 May 2025), SmartCompany (28 May 2025), Startup Daily (15 Dec 2021)

Coverage

Stories naming CalcTree. Where several outlets covered the same round, they are bundled under whichever ran the fullest account.

17 deals

2025 state of raising: $1.8 billion in – as late-stage deals boom

Tracxn figures show Australian tech funding reached $1.8 billion by mid-2025, powered by large late-stage rounds at Protecht, Airwallex, Harrison AI and Advancell, while seed and early-stage raising fell away sharply.

Pre-seed $3.8m

CalcTree secures $3.8 million with first startup investment from Standards Australia

Engineering software startup CalcTree has banked a $3.8 million pre-seed round, drawing backing from the national standards body's investment arm Kungari plus Antler, Suffolk Technologies and Foundamental.

SmartCompany 28 May 2025 CalcTree Archistar Arup Aurecon Autodesk Bentley Jacobs Plaxis Antler Australia Foundamental Kungari Standards Australia Suffolk Technologies Adam Stingemore Mahan Lamei Onur Ekinci Tim Rawling

Also Startup Daily·SmartCompany·Forbes Australia

Funding announcement

A numbers game: CalcTree is helping engineers reduce the risk of calculation errors

Profile of construction technology startup CalcTree, founded by three engineers, whose platform connects engineering designs and calculations; the article covers its product aims and credits Antler's early investment and strategic guidance.

Startup Daily 15 Dec 2021 Antler Australia Arup CalcTree Jacobs Lendlease Mahan Lamei Onur Ekinci Tim Rawling

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