Quick answer: You must register your R&D activities with AusIndustry within 10 months of the end of your income year — for a 30 June year-end, that is 30 April. If you miss it, there is a narrow extension-of-time process through the R&DTI customer portal, but it is capped at 92 days after the statutory deadline, is evidence-based and case-by-case, and forgetting alone is unlikely to justify an extension. Past that window, no valid registration means no R&D tax offset for that year.
20 July 2026 — the 2026–27 Federal Budget proposed R&DTI changes, proposed to start from 1 July 2028. This article describes the current rules unless stated otherwise.
If you have landed here, one of two things is probably true. Either a deadline is bearing down and you want to know exactly how much runway you have, or the deadline has already passed and you are hunting for a lifeline. Either way, you deserve a straight answer rather than false comfort.
Ignition Research is a Registered Research Service Provider (RSP000047) based at Lot Fourteen in Adelaide. We sit on the activity and eligibility side of the R&D Tax Incentive — helping companies structure and conduct genuine R&D. We are not your tax agent and do not lodge your claim. That perspective is exactly why we are blunt about the issue that trips companies up most: the registration deadline is statutory, the discretion to move it is narrow and finite, and the only reliable protection is to plan the timetable at the start of the year, not the end.
This article is specifically about the 10-month registration deadline and what you can — and mostly cannot — do after missing it. The broader eligibility and record-keeping rules sit elsewhere, and the timing of the refund itself is a separate question.
The Short Answer: The 10-Month Deadline Is Hard, and the Rescue Window Is Small
Registration of your R&D activities with AusIndustry is a precondition for claiming the offset. No valid registration for an income year means no R&D tax offset for that year.
Statutory deadline: 10 months after the end of the company's income year.
Maximum extension: no later than 92 days after the statutory deadline.
Post-deadline requests: evidence-based, discretionary and assessed case-by-case.
The honest mental model is that a small, evidence-gated safety margin exists, and beyond it there is nothing. Prevention is the only strategy you fully control.
What the 10-Month Rule Actually Is
You must lodge your registration application with AusIndustry within 10 months after the end of the income year in which the R&D activities were conducted.
30 June year-end → 30 April the following year.
Substituted accounting period → count 10 months from your approved non-June year-end.
Annual registration → each income year's activities are registered separately on that year's clock.
The deadline relates to registration with AusIndustry. That is a different step from lodging the company tax return and R&D tax schedule with the ATO. Registration occurs after the income year has ended, so the 10-month period is the window to finalise the activity descriptions and supporting documentation.
The Narrow Exceptions That Genuinely Exist
An extension is requested through the R&DTI customer portal with evidence supporting the reasons for the request. The treatment depends on when the request is made and how long an extension is sought.
Your situation
What happens
Request of 14 days or less, made before the statutory deadline
Approved
Request of more than 14 days, made before the deadline
Specific supporting information is required; assessed case-by-case
Request of any length, made after the deadline has passed
Specific supporting information is required; assessed case-by-case
Any extension
Capped by law at 92 days after the statutory deadline
The practical implication: the only automatic relief is a short extension of up to 14 days requested before the deadline. Everything after the deadline is discretionary, evidence-based and hard-capped at 92 days. A simple “we forgot” or “we did not get to it” is a weak basis for a post-deadline extension.
Worked Example: A June Year-End Company That Missed 30 April
The following is illustrative only. Every figure is hypothetical and eligibility must be self-assessed against the company's own circumstances.
Picture Torrens Systems, an Adelaide software company with a 30 June year-end, aggregated turnover under $20 million, not controlled by one or more income-tax-exempt entities, and $400,000 of eligible R&D expenditure in FY26.
If it registered by 30 April 2027
As a 25% base-rate entity, the current refundable offset is framed as the company tax rate plus 18.5 percentage points — 43.5% for a 25% base-rate entity — subject to the applicable turnover and control conditions. On $400,000 of eligible expenditure, that points to a materially valuable refundable benefit.
If it missed the deadline and no extension was granted
The offset for FY26 is nil. It is not merely reduced. The eligible expenditure cannot be moved into another year's registration; the year is lost.
That is why the registration deadline should be treated as the most protectable date in the R&DTI calendar. The cost of missing it is the entire year's offset, not a late fee.
Registration vs the ATO Claim: Two Deadlines, Do Not Confuse Them
A common and expensive mistake is to assume that because tax returns can sometimes be amended, a missed AusIndustry registration can also be fixed later through the ATO. It cannot.
Step 1 — AusIndustry: register the R&D activities within 10 months of year-end.
Step 2 — ATO: claim the offset through the R&D tax schedule in the company's tax return.
Registration is the gateway. If there is no valid registration for an income year, there is no registration for the ATO claim to attach to. A tax-return amendment cannot manufacture a missing AusIndustry registration.
The Fix: A Registration Timetable Set at the Start of the Year
Because the extension discretion is so limited, prevention is the real strategy. Companies that do not panic in April are the ones that treated registration as a year-long discipline.
Backward-plan from the deadline. Enter the statutory date as a hard lock and set internal checkpoints at year-end, year-end plus three months, and year-end plus six months.
Keep contemporaneous records. Record hypotheses, experiments and outcomes while the work happens, so registration is not a year-end reconstruction exercise.
Separate the two clocks. Track the AusIndustry registration deadline and the ATO tax-return lodgement date as distinct events with distinct owners.
Use the 14-day pre-deadline extension only as a buffer. It is a planning tool for a genuine tight finish, not a routine habit.
Use the right adviser for the right task. An RSP can assist with activity design, eligibility structure and evidence discipline; a registered tax agent handles lodgement and the company's tax position.
Under current rules, there is generally a minimum R&D expenditure threshold of $20,000. However, eligible R&D activities conducted through an RSP may be claimable even where the usual $20,000 threshold is not met. Using an RSP does not guarantee eligibility; the company still self-assesses.
Forward-looking note: the 2026–27 Federal Budget proposed changes for income years from 1 July 2028, including changes to the refundable-offset turnover threshold, the maximum expenditure threshold and smaller projects involving recognised research organisations. These are proposals, not current law, and they do not change today's registration deadlines.
The Bottom Line
The 10-month registration deadline is statutory and unforgiving. A narrow extension-of-time process exists through the customer portal, but it is evidence-based, case-by-case and capped at 92 days after the deadline. A plain missed deadline is a weak basis for relief.
Miss the window entirely and the whole year's offset is lost. No ATO amendment will rescue it. For a company doing genuine R&D, a disciplined registration timetable is inexpensive insurance against losing an entire year's benefit.
Frequently Asked Questions
Q: I missed the R&D Tax Incentive registration deadline — can I still register?
A: Possibly, but only through the extension-of-time process in the R&DTI customer portal, with supporting evidence and case-by-case assessment. Extensions are capped by law at 92 days after the statutory deadline. Beyond that window, or without a qualifying reason, the registration and offset for that year are lost.
Q: Can AusIndustry grant an extension, and on what grounds?
A: Yes, but narrowly. A request of 14 days or less made before the deadline is approved. Longer requests, or any request made after the deadline, require specific supporting information and are considered case-by-case. Simply forgetting is unlikely to qualify.
Q: When is the registration deadline for a June year-end company?
A: Ten months after the end of the income year — 30 April following a 30 June year-end. A substituted accounting period shifts the date; count 10 months from the company's own year-end.
Q: What happens if I do not register in time — do I lose the whole offset?
A: Yes. Registration with AusIndustry is a precondition for the ATO claim. Without a valid registration for the year, there is no offset for that year, and a tax-return amendment cannot cure the missed registration.
Sources & Further Reading
Apply for the R&D Tax Incentive — registration timing, business.gov.au
Request an extension or variation on your R&DTI application — business.gov.au
Overview of the R&D Tax Incentive — business.gov.au
Rates of R&D tax incentive offset — ato.gov.au
Refundable and non-refundable offsets — ato.gov.au
Get help from a Research Service Provider — business.gov.au
Budget 2026–27 proposed R&DTI changes — business.gov.au
Related: the R&DTI registration deadline explained
Related: claiming R&D under $20,000 with an RSP
A missed deadline is not a paperwork inconvenience — it is a lost year of offset. Talk to Ignition Research before you register, lodge or rely on getting an extension. We can help establish a registration timetable and contemporaneous activity records so the 92-day window never has to become the strategy.
Note: this article describes the current rules. Changes proposed in the 2026–27 Federal Budget for income years starting on or after 1 July 2028 are not yet law.
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.
