Trailer registration can be confusing, so we aim to make it easy for you – no matter which state you live in.

Here’s a look at trailer registration requirements in each Australian state.

Victoria

In Victoria, most trailers need to registered. However, small private trailers may be exempt. The VicRoads website offers a list of exempt trailers. These trailers must display a number plate that matches the tow vehicle’s plate. If your trailer has an aggregate trailer mass (ATM) that’s less than 750kg, the VicRoads website has a Light Trailer Pack that provides information on trailer registration and booking an appointment. If your trailer has a mass of more than 750kg, you will need to fill out the vehicle registration form and make a trailer inspection appointment.

New South Wales

Light trailers with a gross vehicle mass (GVM) less than 4.5 tonnes must be registered – the process is the same as for light vehicles. Heavy vehicles, including trailers more than 2 tonnes gross trailer mass (GTM) and those less than 2 tonnes GTM and fitted with breakaway brakes, are subject to inspections before registration. Further information is on the Roads & Maritime NSW site.

Queensland

In the sunshine state, trailers with an ATM of 750kg or under do not have to be inspected and can be self-assessed by completing the self-assessment form. If your trailer registration is expired or if it’s registered interstate, it’s best you investigate the Department of Transport and Main Roads website. At the registration office, you will need to bring a completed vehicle registration form and self-assessment form with you. You will also need a weighbridge certificate if the trailer’s GTM is more than 1.02 tonnes.

South Australia

In South Australia, you must register your trailer, which also includes compulsory third-party insurance. On the registration form, you’ll need to provide your personal details as well as trailer details. Once complete, take it to a service centre and pay the registration fee.

Western Australia

If you live in the west, you can register your trailer the same way a light vehicle is registered. Complete a vehicle registration form and take it to a service centre to be processed. The GVM of your trailer must not exceed 4,500kg. Fees are calculated based on the weight of the trailer and include the cost of third-party insurance.

Tasmania

In Tasmania, trailers with a GTM less than 4.5 tonnes are registered the same way as light vehicles. Your trailer may be subject to an inspection. It’s a good idea to check that your trailer meets Tasmania’s road safety regulations.

Northern Territory

Trailers on Northern Territory roads must be registered and roadworthy, with current compulsory third-party insurance (CTPI). Here’s a breakdown of registration fees, but keep in mind that roadworthy inspection fees are extra.

For more information on trailer registration, visit your state’s road authority website or drop by a service office.

Source: AL-KO, Without A Hitch, A state-by-state guide to trailer registration, 28 September 2015 withoutahitch.com.au