GAMSAT deferral, refunds and centre changes: what you can still do, and until when

If your plans have changed after you registered for GAMSAT, what you can do depends on where you are on a timeline ACER sets for each sitting. Ask within 14 days of registering and the fee comes back with no administration charge. Until standard registration closes, you can move your test centre, date or session free of charge. After that the same moves cost extra until late registration closes, and then they stop. Deferral to the March or September sitting that follows runs alongside all of this, and it carries its own consequences for refunds and practice materials.

This is a summary of what the Australian Council for Educational Research (ACER) publishes on its GAMSAT pages. Verantrix is an independent preparation platform and is not ACER, so your ACER account and ACER's own pages are what govern your registration. Some things that matter, such as the March 2027 closing dates and the fee for a deferral, are not on the pages this guide draws on. Where that is the case, we say so rather than fill the gap.

The windows, in the order they close

ACER lists the registration fee as AUD$568 in Australia (including GST), €378 in Ireland and £296 in the UK. It is paid in full, online, by Mastercard or Visa credit card, when you register. Every window below is either protecting that payment or adding to it. ACER's home and registration pages say March 2027 registrations open in November 2026. They do not give the March 2027 closing dates for standard registration, late registration or refund requests, so those need to come from ACER's important dates page.

Days 1 to 14: a refund with nothing deducted

A refund requested in the first 14 days after you register is returned in full, with no deduction. You submit the request online through your ACER account, and ACER sends a confirmation email to your registered address if the request went through. The money goes back to the card you paid with, in the currency you paid in.

Two things come with it. When the refund completes, ACER withdraws access to any preparation materials that were included in the registration. And outside the refund windows the starting position is the reverse: ACER's policy treats money paid as non-refundable, giving a change of mind because of personal circumstances as its example, except where a law such as the Australian Consumer Law requires a refund.

After day 14: a free seat change, or a refund with a fee

Until standard registration closes, changing your test centre, date or session online costs nothing, subject to availability. ACER does not run a wait-list for centres. Its advice for a session that is full is to check the registration system in your account regularly, because seats can open up as other candidates make their own changes. Two further limits are worth knowing. If your chosen city has more than one venue, ACER allocates you to one automatically and you cannot pick it, so changing centre means choosing a city, not a building. And ACER says a session change requested because of general availability is not reviewed as a reasonable adjustment, so that process is not a route to a preferred slot.

A refund is still possible in this stretch, but ACER deducts an administration fee: AUD$99 (including GST) in Australia, €61 in Ireland or £51 in the UK. ACER also publishes a dated refund-request cutoff for each sitting. For the 2026 sittings, the March cutoff was 9pm AEDT on 5 February 2026 and the September cutoff was 10pm AEST on 13 July 2026. They show that the cutoff is a specific date and time, not a general rule. The 2027 cutoffs are not on the pages we draw on, and those pages do not set the refund cutoff beside the late registration close. Until you can see both for your sitting, our recommendation is to work to whichever date is earlier and confirm with ACER.

After standard registration closes: the same changes, for a fee

From the close of standard registration until late registration closes, ACER still lets you change centre, date or session, again subject to availability, but adds a fee: AUD$114 in Australia, €83 in Ireland or £71 in the UK. In all three currencies that is higher than the refund administration fee for the same period (AUD$99, €61 and £51). The two fees pay for different outcomes, so the comparison tells you what each costs, not which is better value for your situation.

After late registration closes: no changes

Once registrations close, ACER says it can no longer change anyone's test centre, date or session. Refund requests are accepted only inside the 14-day period that follows registration. The pages we draw on do not say whether deferral remains available after registrations close, or whether a deferred registration can later have its centre changed. ACER's registration page links to a separate deferral page for details and fees, and that page is the one to read before you treat deferral as a fallback.

What deferral changes and what it leaves alone

ACER lets a candidate who decides not to sit their registered sitting move the registration to the March or September sitting that follows. Deferring does not extend refund rights. The cutoff stays the one attached to the sitting you originally registered for, and ACER says that once it passes you cannot apply for a refund, deferral or not. ACER's stated reason is that the fee pays for a reserved seat, test set-up and pre-booked supervision, costs it says it must meet however many candidates attend, and that a refund applies where the service had a defect, not where personal circumstances change. If a refund is a live possibility for you, the date to decide by is the refund cutoff, not the sitting date. Whether your particular circumstances could fall under consumer law is not something ACER's pages answer, and this guide cannot either.

Two other things move with a deferral. Reasonable adjustments approved for one sitting are valid only for that test cycle and year, so after a deferral you need a new application, with supporting documentation, by the advertised deadline for the new sitting. ACER also notes that when a condition arises close to the test window, the support it can provide is limited, and it may suggest deferring in that situation. Separately, ACER's home page warns that how long GAMSAT results stay valid varies by country and by institution, and asks candidates to check their currency against the test cycle they are registering for. Deferring puts your sitting in a later cycle, which is the reason to repeat that check against the institutions you intend to apply to.

Practice materials: refund ends access, deferral does not

ACER states two outcomes. A completed refund withdraws access to the preparation materials included with the registration. A deferral keeps access going for 12 months, counted from the date the original registration was completed. The count is anchored to that original date, and ACER's page does not describe it as restarting when you defer, so a later sitting uses up more of the 12 months before you reach test day. Whether your new sitting date falls inside the window is arithmetic you can do from your own registration date. ACER's pages do not do it for you, and they do not list what the included materials contain.

Putting it in order

• Registered within the last 14 days and sure you will not sit: a refund request through your account returns the fee with nothing deducted, and access to included preparation materials ends.
• Still sitting, but the centre, date or session no longer suits, and standard registration is open: change it online without charge, accepting that availability limits the options and there is no wait-list.
• Past standard registration but before late registration closes, and the seat needs to move: the change carries ACER's additional fee. A refund in the same stretch carries the administration fee instead.
• Not sitting this time but intending to sit later: defer to the March or September sitting that follows. Read ACER's deferral page for the fee, keep the original refund cutoff in mind, count 12 months of materials access from the original registration date, and plan a fresh reasonable adjustments application if you need one.
• Registrations closed: no seat changes are possible, and a refund is available only within the 14-day period.

Our view is that deferral moves the date of your sitting and nothing else. It buys time. Whether the extra months change your result depends on what you do with them, and the choice between sitting, deferring and refunding is easier to make when you can see whether your preparation has been changing anything.

What this guide cannot settle

Fees, closing dates and policies are ACER's to set and change, and the dates quoted here are for the 2026 sittings. The March 2027 closing dates, any deferral fee, any deadline for deferring and the application of consumer law to your circumstances are not established by the pages above. Confirm each in your ACER account or with ACER before you pay, defer or cancel.

The deadlines tell you what you are allowed to do and when, but they cannot show whether another few months would be spent on something that works, and a single practice score does not show whether a specific reasoning pattern is still costing you marks. Verantrix can show whether a specific reasoning pattern is occurring less often than it was, drawing on how you record your reasoning across practice attempts, which gives you something to examine before the refund cutoff or the deferral decision arrives. It cannot tell you whether to defer, only what your own attempts show. Whichever way you lean, record how you reasoned on your next ten practice questions, choose one pattern that recurs, and check whether it is still there after another ten.