When the ATO disallows or reduces your R&D tax incentive claim, you have formal options: lodge a written objection to the ATO’s assessment, request an amendment within the applicable time limits, or pursue alternative dispute resolution. The right pathway depends on whether the dispute concerns activity eligibility, assessed expenditure, or the offset calculation itself.
We work with founder-led businesses and privately owned groups across Australia who have built genuine R&D programs, lodged claims in good faith, and then found themselves on the wrong end of an ATO review. The dispute process is navigable. But the mechanics matter, and so does knowing how the ATO frames these cases internally before you respond.
What the R&D Tax Incentive Dispute Process Involves
The R&D Tax Incentive (RDTI) sits across two regulators, and that split is the first thing most claimants miss.[1] The Department of Industry, Science and Resources (DISR, formerly AusIndustry) governs technical activity eligibility under the Industry Research and Development Act 1986. The ATO governs the tax side: expenditure nexus, integrity rules, feedstock adjustments, and offset calculations under Division 355 of the Income Tax Assessment Act 1997 (ITAA 1997).[2]
A dispute with DISR over whether your activities constitute genuine R&D follows a different pathway to a dispute with the ATO over whether your expenditure qualifies or your offset was correctly calculated. Conflating the two is a costly mistake. Before you lodge anything, confirm which regulator issued the decision you are challenging.
For ATO disputes specifically, the formal pathways are:
- Amendment request, if you have identified an error in your own lodgement, you can request an amendment to your income tax assessment in writing. The standard amendment period for R&D claimants is four years from the date of the original assessment, though a two-year period may apply in certain circumstances.[1]
- Formal objection, if you disagree with how the ATO has applied the law to your facts, you lodge a written objection to the assessment. This is the primary dispute mechanism and carries strict time limits.[1]
- Alternative dispute resolution (ADR), the ATO offers in-house facilitation and mediation before matters escalate to the Administrative Review Tribunal (formerly the AAT).
- External appeal, if the objection is disallowed, you can appeal to the Administrative Review Tribunal or the Federal Court.
What Triggers an ATO Audit of Your R&D Claim
The ATO does not select R&D claims for review at random. Its data-matching systems benchmark claims against industry ratios, and several patterns draw consistent scrutiny.[3]
R&D intensity ratios out of step with sector averages. The ATO compares your R&D expenditure as a proportion of total revenue against other businesses in your industry. A ratio that sits well above the sector average triggers an outlier alert, regardless of whether the underlying activities are legitimate.[3]
Large refunds without corresponding business growth. A significant refundable offset claimed by a company whose revenue or headcount has not grown raises a flag in ATO data-matching. The system reads it as a potential mismatch between claimed innovation activity and commercial reality.[3]
Year-on-year expenditure jumps above 50 percent. A sudden increase in R&D expenditure without a clear business event to explain it, a new product line, a capital raise, or a documented pivot, attracts scrutiny.[3]
Related-party payments included in R&D expenditure. Payments to associates carry heightened review risk because of transfer pricing concerns and the potential for circular arrangements. The ATO examines whether expenditure is genuinely at risk and whether it was incurred for the entity’s own benefit.[3]
Documentation gaps between core and supporting activities. The distinction between core R&D activities (which must involve experimental activities with a genuine unknown outcome) and supporting activities is one of the ATO’s most consistent audit focus areas. Weak nexus documentation between the two is a reliable trigger.[3]
Our article on how the ATO selects who to audit covers the broader audit selection mechanics in detail. Understanding the selection criteria before a review begins is the difference between a defensible position and a reactive one.
The 2024 AAT Decision That Changed the Landscape
The 2024 Administrative Appeals Tribunal decision in GQHC v Commissioner of Taxation [2024] AATA 409 settled a question that had been quietly contested for years.[4]
The widely held view had been that the ATO’s role in administering the RDTI was limited to assessing expenditure eligibility, with DISR holding sole authority over activity eligibility. The Tribunal confirmed that the ATO has independent power under Division 355 of the ITAA 1997 to determine whether activities meet the legislative definition of R&D activities, regardless of DISR’s registration decision.[4]
For claimants, this matters because a DISR registration no longer functions as a shield against ATO challenge on activity eligibility. Your ATO dispute may need to address both the technical character of your activities and the expenditure treatment simultaneously. Preparation for an objection must account for both lines of attack.
How to Lodge a Formal Objection to an R&D Tax Claim Decision
A formal objection is a written document lodged with the ATO within the relevant time limit, typically 60 days from the date of the amended assessment or decision notice, though longer periods can apply.[1]
The objection must state the grounds on which you dispute the ATO’s position. Vague disagreement is not sufficient. The ATO expects a legal and factual argument that engages with the specific provisions under Division 355 and the evidence supporting your position.
Our detailed guide on what to include in an ATO objection sets out the structural requirements. For R&D disputes specifically, the objection should address:
- The precise legislative test the ATO says you failed, and why your activities or expenditure satisfy it
- The contemporaneous documentation you hold that supports the experimental nature of your core activities
- The nexus between supporting activities and the core R&D program
- Any relevant private binding rulings, ATO guidance, or case law that supports your interpretation
An objection that reads like a complaint will be disallowed. An objection that reads like a technical legal submission, grounded in Division 355 and supported by contemporaneous records, gives the ATO’s review officers a basis to allow it.
For a broader view of how disputes progress from audit through to resolution, see our overview of the six stages of a tax dispute and the ATO audit, review, and objection process.
Why Insider Knowledge of How the ATO Decides Changes Your Outcome
The ATO’s R&D compliance program is not a random quality-check function. It is a structured risk-based program, and the officers running it operate within internal frameworks that shape how they read a claim, what evidence they weight, and what arguments they find persuasive.
Nitin Saby, our founder, spent years inside the ATO as a Tax Counsel Network Law Interpretation Specialist and Tax Specialist Executive before becoming a Tax Principal at a top-10 CAANZ firm. That background is not a credential to display. It is a functional advantage: we understand how ATO review officers frame cases, what internal guidance they apply, and where the genuine technical arguments are versus where a claim is genuinely vulnerable.
SMEs and founder-led businesses that have invested real resources in genuine R&D programs deserve representation that matches the sophistication of the ATO’s own analysis. A generic objection letter will not do it.
If you have received an amended assessment, a position paper, or an audit initiation letter relating to your R&D tax incentive claim, the time to act is before the objection deadline, not after. Contact us to discuss your position and we will tell you plainly what your options are and what they are worth pursuing.
FAQ
What is the 80% rule for R&D credit?
The 80% rule is a feedstock adjustment rule under Division 355 of the ITAA 1997. Where a feedstock input is used in producing a marketable product, the R&D deduction for that input is reduced. The adjustment formula limits the deductible amount to ensure businesses do not claim an R&D offset on expenditure that effectively produces a commercial output. The precise calculation depends on the value of the marketable product relative to the feedstock cost.
Is the R&D tax offset refundable?
For eligible companies with an aggregated turnover below $20 million, the R&D tax offset is refundable at a rate of 18.5 percentage points above the company’s tax rate. For companies above the $20 million turnover threshold, the offset is non-refundable and is applied against the company’s income tax liability. The refundable offset is one of the most scrutinised elements of the RDTI program because it generates a cash payment from the ATO rather than simply reducing a tax bill.[2]
What are the five red flags the ATO is most likely to find in an R&D tax claim?
The five most consistent audit triggers in R&D claims are: an R&D intensity ratio significantly above the industry average; a large refundable offset claimed by a company with flat or declining revenue; year-on-year R&D expenditure growth above 50 percent without a documented business reason; related-party payments included in claimed expenditure; and weak or absent documentation linking supporting activities to core experimental activities.[3] Any one of these can initiate a review. Several together make a comprehensive audit near-certain.
How far back can you claim R&D tax credits?
The standard amendment period for R&D tax incentive claims is four years from the date of the original income tax assessment. A shorter two-year period may apply in certain circumstances. If the ATO initiates a review, it can examine years within those same time limits. Claims outside the amendment period cannot generally be lodged or varied, which makes timely and accurate lodgement critical from the outset.[1]
[1] Australian Taxation Office, “Correcting mistakes and disputing decisions,” ATO website, https://www.ato.gov.au/businesses-and-organisations/income-deductions-and-concessions/incentives-and-concessions/research-and-development-tax-incentive/correcting-mistakes-and-disputing-decisions
[2] Australian Taxation Office, “Research and development tax incentive,” ATO website, https://www.ato.gov.au/businesses-and-organisations/income-deductions-and-concessions/incentives-and concessions/research-and-development-tax-incentive
[3] Aptum Legal, “What Triggers an ATO Audit of Your R&D Tax Claim?”, https://aptumlegal.com.au/blog/what-triggers-an-ato-audit-of-your-rd-tax-claim/
[4] Intellect Labs, “Confirming the ATO’s powers to determine the eligibility of R&D Tax Incentive activities,” https://www.intellectlabs.com.au/blogdatabase/recent-aat-decision-confirming-the-atos-powers-to-determine-the-eligibility-of-rampd-tax-incentive-activities