Quick answer: Buying, commissioning and running a construction printer or robot to a documented specification is not by itself an experiment. Under s 355-25 of the ITAA 1997 a core R&D activity needs an outcome that could not be known or determined in advance and could only be determined by a systematic progression of work, conducted to generate new knowledge. In printing and robotics that usually means an unknown process window: whether any parameter set holds interlayer bond and buildability together. You self-assess.
18 August 2026 — this article describes the current rules. The 2026-27 Federal Budget announced R&DTI changes scheduled to start 1 July 2028; those are not yet law.
A gantry concrete printer arrives at a yard in Adelaide's northern suburbs on two trucks. A robotic arm is fitted with a brick-laying end effector or a rebar-tying head. The commissioning engineer is on site for a fortnight, the supplier's qualified mix is in the silo, and the first printed wall panel goes up in front of a client and a camera. Everything in that scene is new to the business. Very little of it is, by itself, an experimental activity.
This article is about the construction method and the machine — the printer, the robot, and the process parameters that govern what comes out of them. It does not cover modular, prefabricated or DfMA delivery generally, or novel structural systems on difficult sites; those are separate questions with their own Insights, and where a printed element is also a new structural system, the structural question is assessed on its own facts.
The Machine Is New. That Is Not the Question the Legislation Asks
Section 355-25(1) of the ITAA 1997 defines core R&D activities as experimental activities whose outcome cannot be known or determined in advance on the basis of current knowledge, information or experience, but can only be determined by applying a systematic progression of work that is based on principles of established science and proceeds from hypothesis to experiment, observation and evaluation, and leads to logical conclusions; and that are conducted for the purpose of generating new knowledge, including new knowledge in the form of new or improved materials, products, devices, processes or services (business.gov.au).
The established-science limb
The established-science limb is satisfiable in this field, which is the point of naming it: cement hydration and thixotropic structural build-up, rheology, fracture mechanics at a cold joint, and the kinematics and compliance of a robot arm are established sciences. A print-and-look loop that varies dosage until a wall stands up, with no basis in any of them and no measurement tied to a stated hypothesis, is a different thing from an experiment however thorough the log book.
Leads to logical conclusions
A progression has to separate a trial sequence from an undirected search: each trial has to inform the next through an evaluation, and the sequence has to end somewhere — including in a conclusion that the approach does not work.
Specification Versus Process Window
The distinction that matters is between building to a specification already known to be achievable, and not knowing whether a process window exists at all — a region of the parameter space in which two or more requirements that pull against each other are satisfied at once.
Printing is full of these tensions. A mix open enough to bond to the layer beneath has less green strength to carry the layers above; a robot fast enough to hit a cycle time carries more dynamic deflection at the end effector. Where supplier data, published literature and the company's own prior work already locate a workable setting, the work is configuration. Where they do not, and the question can only be settled by testing, the position is different.
Closer to an unknown outcome
Ordinarily configuration or production
Whether any parameter set holds interlayer bond and buildability together at a layer cycle time and ambient condition outside the range covered by available data
Printing at the supplier's qualified cycle time, mix and ambient range
Whether a placement tolerance is achievable when the required accuracy sits below the arm's published repeatability once payload, reach and thermal drift are combined on a moving site
Programming paths and calibrating a robot to the vendor's documented procedure to reach its stated accuracy
Whether a printable mix can be formulated from a locally available supplementary cementitious material or recycled aggregate whose effect on thixotropic recovery is not predictable from its individual data
Substituting a component within a supplier's qualified formulation envelope
Whether reinforcement can be integrated during printing in a way that develops the intended interaction, where no established method covers the geometry
Placing conventional reinforcement in printed permanent formwork to a designed detail
The right-hand column is not a judgement about difficulty. Commissioning a supplied gantry to the vendor's documented procedure can be demanding, expensive and slow, and is generally unlikely to be a core R&D activity on those facts, subject to the activity's own facts and the statutory tests.
The Exclusions That Bite Hardest Here
Three parts of Division 355 land on this work:
1. Routine testing and analysis of materials
Section 355-25(2)(f) excludes activities associated with complying with statutory requirements or standards, including — at subparagraph (iii) — routine testing and analysis of materials, components, products, processes, soils, atmospheres and other things. Printing and robotic placement generate a great deal of testing: compressive cylinders, flexural prisms, slump and flow, dimensional checks on every element. Testing run to demonstrate compliance with a statutory requirement or standard sits within that exclusion. Testing run to find out what is achievable, against a hypothesis, is a different activity — and the two often use the same rig on the same day, so the purpose of the testing and the circumstances in which it is conducted matter more than the test method alone.
2. Reproducing a commercial process
Section 355-25(2)(g) excludes any activity related to the reproduction of a commercial product or process by a physical examination of an existing system, or from plans, blueprints, detailed specifications or publicly available information — which may apply where the activity is directed to reproducing a commercial product or process from vendor specifications, detailed specifications or publicly available information.
3. The dominant-purpose test, through limbs (b) and (c)
Supporting R&D activities are activities directly related to core R&D activities. But under s 355-30(2), if an activity is one referred to in s 355-25(2), or produces goods or services, or is directly related to producing goods or services, it is a supporting R&D activity only if it is undertaken for the dominant purpose of supporting core R&D activities.
Those two middle limbs make this field harder than software. A printer that prints a wall produces goods; so does a robot laying a course of blocks. Silo charging, pumping, mix batching, gantry setup and site logistics may be directly related to the production of goods, depending on the particular activity. Where an activity is directly related to producing goods and is being assessed as a supporting R&D activity, the dominant-purpose test must also be considered. Where one run both resolves a technical unknown and delivers a saleable element, its dominant purpose is a question of fact and should not be determined solely by an intention stated after the event.
A Worked Example: Interlayer Bond at a Long Layer Cycle
Hypothetical and illustrative. The numbers below show what a worked investigation looks like; they are not a statement that the activity would be eligible, and the company self-assesses.
Baseline: An Adelaide contractor operates a gantry printer with a 40 mm × 60 mm nozzle, printing a supplier-qualified mix at 100 mm/s. On its previous job — small walls, short perimeters — the layer cycle time was about 2 minutes at 18–24 °C, and interlayer splitting tensile bond averaged 1.35 MPa against a monolithic cast control of 1.9 MPa.
What changed: A new element has a perimeter roughly four times longer, so the return interval to any point on a layer stretches to 6–9 minutes, and the print window runs through a summer with bead surface temperatures reaching 38 °C.
The unknown & pre-fixed target: Before the first specimen, the target was recorded as: interlayer bond of at least 1.0 MPa at cycle times up to 9 minutes, with cumulative vertical deformation no greater than 3 mm over a 20-layer stack. Supplier data covered cycles up to 3 minutes below 25 °C. The question was whether any parameter set holds both at 9 minutes and 38 °C, given that the surface drying and thixotropic recovery that help buildability are the same mechanisms that close the surface to bonding.
Held & varied: Held: Nozzle geometry, print speed, standoff (8 mm), pump pressure, binder and aggregate skeleton, specimen geometry and the 28-day test age. Varied: Set-retarder dose, thixotropy modifier (clay-based) dose, accelerator dosed at the nozzle, interlayer surface treatment (none / fine water mist / cement-paste spray), layer cycle time (2, 6, 9 minutes) and bead surface temperature (24 °C and 38 °C).
Sequence of trials:
Trial A — Extend open time by retarder alone: At 9 minutes and 24 °C, bond recovered to 1.12 MPa. Buildability failed badly: 11 mm cumulative deformation over 20 layers, with a local collapse at a corner on layer 14. Ruled out: open-time extension by retarder dose as a single-variable route in this mix, establishing that bond and buildability move in opposite directions along that axis.
Trial B — Water mist between layers, retarder returned to baseline: At 6 minutes, bond 0.98 MPa; at 9 minutes, 0.62 MPa with a coefficient of variation of 28% and visible dry banding at 38 °C. Ruled out: misting alone at the long cycle, and located the dominant mechanism in surface moisture state rather than degree of hydration.
Trial C — Thixotropy modifier plus nozzle-dosed accelerator, with cement-paste spray between layers: At 9 minutes and 24 °C: bond 1.21 MPa, deformation 2 mm. At 9 minutes and 38 °C: bond 1.14 MPa, deformation 2.5 mm.
Trial D — Trial C parameters at 42 °C surface temperature: Run to find the edge. Bond fell to 0.71 MPa.
The result actually reached: A process window exists, but it is bounded: within the range tested, the combination in Trial C held both requirements up to a 9-minute cycle and a 38 °C bead surface temperature, and failed at the 42 °C condition tested. The knowledge generated was the relationship between surface moisture state, thixotropic recovery and interlayer bond across that window — not the wall.
Where the boundary falls: For this example, the candidate experimental activity is documented from the formulation of the hypothesis and experimental approach through to the trials, evaluation and recorded conclusion. Outside it: gantry commissioning to the vendor's procedure, path programming, printing the production elements once the parameter set was fixed, routine production-quality testing, and any certification or conformance testing undertaken to demonstrate compliance with a statutory requirement or standard. Whether any production printing qualifies as a supporting R&D activity depends on whether it is directly related to a core R&D activity and, because it produces goods, whether it is undertaken for the dominant purpose of supporting that core activity.
Where an RSP Fits
Research Service Providers are organisations registered to provide scientific or technical services to companies conducting R&D, in specific fields of research (business.gov.au). For a contractor commissioning a printer or a robotic cell, an RSP supplies testing capability and experimental structure: stating the unknown, designing a trial sequence capable of resolving it, and running the measurement.
On the money side, one point is specific to RSPs: qualifying expenditure incurred to a non-associate RSP may still be taken into account in determining R&D tax offset entitlement where total notional deductions are below the usual $20,000 threshold, provided the services are within a research field for which the RSP is registered — see claiming R&D under $20,000 — and using an RSP does not guarantee eligibility — you still self-assess. Offset rates, tiers and how they are calculated are covered in refundable vs non-refundable.
Talk to Ignition Research before the first specimen is printed — as a Registered Research Service Provider at Lot Fourteen in Adelaide, we help construction businesses working with printers and robotic cells state the unknown in advance and design a trial sequence capable of resolving it. We are not a registered tax agent: your company self-assesses and remains responsible for its own claim, with advice and lodgement handled by your tax adviser. Get in touch.
Frequently Asked Questions
Q: Is 3D concrete printing eligible for the R&D Tax Incentive in Australia?
A: Not as a category. Printing is a construction method, and adopting one is a commercial decision. A core R&D activity requires an outcome that could not be known or determined in advance and could only be determined by a systematic progression of work based on principles of established science, conducted to generate new knowledge. In printing that usually means a specific process question — whether a parameter set exists that holds interlayer bond and buildability together outside the range covered by available data. You self-assess.
Q: Is commissioning a construction robot or printer an eligible R&D activity?
A: Standing up a supplied system to the vendor's documented procedure, calibrating it to its published accuracy and programming paths is generally unlikely to be a core R&D activity on those facts, subject to the activity's own facts and the statutory tests. Section 355-25(2)(g) also excludes activities related to reproducing a commercial product or process from plans, detailed specifications or publicly available information.
Q: Is testing printed concrete specimens a core R&D activity?
A: It depends on what the testing is for. Section 355-25(2)(f)(iii) excludes routine testing and analysis of materials, components, products and processes among activities associated with complying with statutory requirements or standards, so conformance testing undertaken to demonstrate compliance with a statutory requirement or standard cannot be a core R&D activity. Testing designed to answer a stated hypothesis about what is achievable through the required systematic progression of work is a different activity even when the test method is identical.
Q: Does printing the actual building count as a supporting R&D activity?
A: Only if it clears the dominant-purpose test. Under s 355-30(2), an activity that produces goods or services, or is directly related to producing goods or services, is a supporting R&D activity only where it is undertaken for the dominant purpose of supporting core R&D activities. A print run that delivers a saleable element engages both limbs, so the dominant purpose of that run is a question of fact.
Sources & Further Reading
legislation.gov.au — Income Tax Assessment Act 1997 — Div 355, incl. ss 355-25 and 355-30
Related: R&D for property and construction · what does not qualify · refundable vs non-refundable · what an RSP is · claiming R&D under $20,000
This article is general information from a Registered Research Service Provider about the R&D Tax Incentive. It is not tax, legal or financial advice; eligibility depends on your circumstances and you should self-assess and seek your own advice.
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