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mergersandacquisitions.com.auThe merger notification rules, from the buyer’s side

Step 3 of 5 · all five steps

Merger timelines and fees

The ACCC’s phase 1 review runs up to 30 business days, and phase 2, for the deals that need it, up to 90 additional business days, each subject to extensions. The fee to notify an acquisition is $56,800, the amount in the Notification of Acquisitions Determination as in force from 1 January 2026 and listed on the ACCC’s page when checked on 8 October 2026.

General information, not legal advice. Fees and timelines here are as the ACCC and the Determination stated them; the ACCC updates its cost recovery statement each year. The official places to check are the ACCC’s mergers and acquisitions pages and, for foreign buyers, the Treasury’s foreign investment pages.

Phase 1
Up to 30 business days
Phase 2
Up to 90 more business days
Notification fee
$56,800
A wooden-framed hourglass lit in cold blue against a black background, sand running into the lower bulb.
Sand running through an hourglass. Photo by xtremeART on Pixabay.

Day zero

When the clock starts

The clock starts on the effective notification date: the day the notification is made and its fee paid, which can be a non-business day. Counting begins on the next business day, business day 1. Paying the fee is not itself a notification: the ACCC confirms the effective notification date in writing once the notification is lodged and any fee is paid.

Phase 1

Phase 1, day by day

  1. Day 1The ACCC publishes details of the notification on the acquisitions register.
  2. Day 15The earliest the ACCC can approve the acquisition. It must wait 15 business days so that third parties can comment.
  3. Day 20The last day the parties can offer a remedy. If they offer one, phase 1 may be extended by up to 15 business days.
  4. Day 30Phase 1 ends unless the timeline is extended. Before then the ACCC may approve the acquisition, with or without conditions, or decide it needs phase 2.

The ACCC says it “expects to decide around 80% of acquisitions in 15 to 20 business days through early phase 1 decisions or notification waivers.” If no determination is made before the end of the determination period, section 51ABZI(2) of the Act provides that the ACCC is taken to have determined that the acquisition may be put into effect; a deemed determination of that kind carries no conditions.

Phase 2

Phase 2, for the few that need it

The ACCC expects only a small number of matters to need phase 2, which begins immediately after phase 1 ends.

  1. Fee dueThe phase 2 fee is due on or before 7 business days after the ACCC tells the notifying party the notification is subject to phase 2. If it is not paid by then, the ACCC stops considering the notification.
  2. Day 25By this day the ACCC issues a notice of competition concerns, if it has not already approved the acquisition.
  3. Day 50The deadline for the parties to respond to that notice.
  4. Day 60The last day to offer a remedy. A remedy offered after day 50 may extend phase 2 by up to 15 business days.
  5. Day 75The last day to give the ACCC information. Except in limited circumstances, neither the parties nor third parties may provide information or submissions between days 75 and 90.
  6. Day 90Phase 2 ends unless extended, with the acquisition approved, with or without conditions, or not approved.

The ACCC lists some circumstances in which timelines may be extended or adjusted, including when the notifying party offers a commitment or undertaking, asks for an extension, misses a date for providing information, or takes more than 10 days to answer a compulsory request for information.

After approval

Two more dates once approved

When a notified acquisition is approved, the ACCC publishes its reasons on the acquisitions register, and the acquisition cannot proceed for 14 calendar days from that date, to allow for applications to the Tribunal for review. It must then be completed within 12 months of the approval decision, or the parties will need an extension or a fresh notification. How review and extensions work is in waivers, Tribunal review and penalties.

Optional

The public benefit phase

A public benefit application can be lodged only after the ACCC has considered the acquisition’s competitive effects and either did not approve it or approved it with conditions. It must be lodged within 21 calendar days of the ACCC’s decision. The ACCC then weighs whether the acquisition is likely to benefit the public by more than the detriment it is likely to cause.

The phase runs 50 business days, subject to extensions. The ACCC issues a public benefit assessment 20 business days in, and business day 35 is the final day for the parties to respond or offer a remedy.

Fees

What each step costs

ACCC fees in the Notification of Acquisitions Determination 2025 (compilation in force from 1 January 2026), as listed on the ACCC’s pages checked on 8 October 2026.
StepFeeWhen it applies
Notification$56,800To notify an acquisition
Phase 2, deal $50 million or less$475,000Due by the 7th business day after the ACCC says the notification is subject to phase 2
Phase 2, deal over $50 million up to $1 billion$855,000As above
Phase 2, deal over $1 billion$1,595,000As above
Public benefit application$401,000To apply for a public benefit assessment
Notification waiver application$8,300To apply for a waiver

For the phase 2 fee, the deal’s value is the greater of the market value of the shares and assets acquired and the consideration for them, measured on the contract date or, where there is no contract date, on the effective notification date. Notification fees are paid by electronic funds transfer, with proof of payment uploaded through the portal on the same day; credit card payment is not available for notification fees.

Small business

The small business fee exemption

A small business with aggregated turnover of less than $10 million may be eligible for a fee exemption. It is available where the only notifying party, or every notifying party where there are several, is a small business entity in the income year containing the contract date. “Small business entity” takes its meaning from the Income Tax Assessment Act 1997, and the ACCC points to the Australian Taxation Office for more on that definition.

Next stepOverseas buyers face a second, separate review: foreign investment review. What the ACCC weighs during these phases is in what the ACCC assesses.