How Number Plates in Australia Work

Every car on the road has to display a visible number plate, and it keeps that plate the whole time it's registered in a given state. The plate number is tied to the vehicle's registration, so you can use it to search and check registered vehicles, which comes in handy when you're sizing up a used car.

Each state sets its own plate rules. Heavy vehicles are the exception, they follow a separate national scheme covered further down.

Custom plates are on offer too, within limits. Whatever you put on one, it still has to meet your state's format rules, stay clearly on display and be readable from 20m away. Anything crude or suggestive tends to get knocked back.

Australian Number Plates by State

White backgrounds dominate across the country, with New South Wales the standout exception. Most run a six-figure sequence, though the exact pattern shifts from state to state.

If you want the fine detail on what's allowed where you live, your state transport department's website will have a page laying it out.

What follows is the standard-issue car plate for each territory. It won't necessarily hold for trailers, motorcycles or other vehicle types.

A quick key for the serial formats below: lower-case (n) is a number, lower-case (a) is a letter, and a capital letter is a fixed character that stays the same across every plate.

Australian Capital Territory

The ACT starts every plate with a Y. 'ACT' sits across the top, and one of two slogans runs along the bottom: "Canberra - The Nation's Capital" or "Canberra - The Bush Capital." Which one you get depends on the series being produced at the time.

  • Background colour: White
  • Text colour: Blue
  • Serial format: Yaa·nna

Jervis Bay Territory

Jervis Bay runs its own plates, near-identical to the ACT's. The giveaway is the missing slogan, they simply read "Jervis Bay Territory" under the serial.

  • Background colour: White
  • Text colour: Blue
  • Serial format: Yaa·nna

New South Wales

NSW skips the slogan too, with 'NEW SOUTH WALES' embossed under the serial instead. Worth knowing: the suffixes IA-IZ and OA-OZ aren't used.

  • Background colour: Yellow
  • Text colour: Black
  • Serial format: Da·nn·aa

Northern Territory

Plates in the Northern Territory carry the slogan "N.T. OUTBACK AUSTRALIA" embossed under the serial. The series turns over regularly, so the letters change over time.

  • Background colour: White
  • Text colour: Ochre
  • Serial format: Ca·nn·aa

Queensland

QLD plates run three numbers, then two letters, then a final number, and neither 0 nor 1 turns up in that last spot. "QUEENSLAND - SUNSHINE STATE" is embossed along the bottom.

  • Background colour: White
  • Text colour: Maroon
  • Serial format: nnn·Gan

South Australia

You'll spot a South Australian plate by the "SOUTH AUSTRALIA" embossed at the bottom. The format below covers all vehicles, but a couple of letters are spoken for: Q is held back for government vehicles, and T can't follow the C because it's reserved for trailers.

  • Background colour: White
  • Text colour: Black
  • Serial format: Snnn·Caa

Tasmania

Tasmania's plate is the one with character, the state logo (a thylacine in reeds) sits on the left, with "Tasmania - Explore the possibilities" embossed at the bottom. As in NSW, the suffixes IA-IZ and OA-OZ are left out.

  • Background colour: White
  • Text colour: Blue
  • Serial format: K nn aa

Victoria

"VICTORIA - THE EDUCATION STATE" is screened along the bottom of Victorian plates. The one restriction here is that 0 can't sit in the 1st or 4th position, otherwise the format's fairly open.

  • Background colour: White
  • Text colour: Blue
  • Serial format: 1Xa·naa

Western Australia

Western Australia tops its plate with a blue block for the sky and a desert sun set in front, with "WESTERN AUSTRALIA" along the bottom. T never appears as the first letter, since it's reserved for trailers.

  • Background colour: White
  • Text colour: Blue
  • Serial format: 1Haa·nnn

What Are National Heavy Vehicle Plates?

Heavy vehicles over 4.5 tonnes GVM get National Heavy Vehicle Plates across the ACT, NSW, Queensland, South Australia, Tasmania and Victoria. In the Northern Territory it's optional rather than required.

A plate is issued when a new heavy vehicle is first registered, when an unregistered one goes back on the books, or when a registration transfers between states, as long as the destination isn't Western Australia.

The plate itself is black lettering on white, with a blue sash at the bottom reading "NATIONAL HEAVY VEHICLE."

The current format is aa·nnaa, and the two opening letters both mean something. The first flags the vehicle type, X for trucks and Y for trailers. The second flags the territory:

  • ACT: A
  • New South Wales: N or O
  • Queensland: Q or B
  • Northern Territory: B
  • South Australia: S
  • Tasmania: T
  • Victoria: V or W

Heavy vehicle owners can request state-based personalised plates as well.

On the whole the system's easy enough to read. State plates name the place right there on the plate, and the colour differences do a lot of the work in telling them apart. Plenty of the number-and-letter patterns hint at something about the car too, though how much varies by state. For anything beyond that, run the plate through a car history report from Carify, which fills in the registration details and the rest of the vehicle's history.

Common Questions About Australian Number Plates

A few of the questions we get asked most. There's more on our help page.

What do Australian number plates look like?

Appearance shifts from state to state. White backgrounds with blue text are the norm, but there's plenty of variation, and while a six-digit serial is common, every territory has its own rules for the sequence.

Who owns the number 1 number plate in Australia?

A Victorian single-digit plate showing just the number 1 is reckoned to be the priciest custom plate in the country. It belongs to former Coles chief executive Peter Bartels, who runs it on his Mercedes AMG, and it's valued at an estimated $2.4 million.

What does a yellow plate mean in Australia?

A yellow plate is a NSW plate. The state's standard issue is a yellow background with black text.

Why do Canberra plates start with Y?

Every Canberra plate opens with a Y for the sake of consistency, though nobody's quite sure why Y in particular. One theory is that the ACT drew Y simply as a smaller jurisdiction; another links it to the Y-plan of Canberra itself.

‍