Leaders of each state and territory met last week, and all except Western Australia agreed on a goal to have their borders open by Christmas.

It means if case numbers stay down nationwide, there could be a lot of travel taking place.

No-one wants to be caught breaking the rules — so here's your guide to how many people you can gather with on Christmas Day in each state and territory.

Though as the situation in South Australia showed us — things could change at any time.

New South Wales

Those in New South Wales can currently have 20 visitors to their home. People who live in the household don't count towards that number.

Venues are taking bookings of a maximum of 30 people.

Everyone in the venue has to be seated and the total capacity in venues is limited by a square metre rule — one person per four square metres inside and one per two square metres outside.

QR code check-ins will be mandatory for hospitality businesses in NSW by Christmas.

Victoria

After a long, tough winter, Victorians will be able to host up to 30 people at home on Christmas Day — and babies under 12 months won't count towards that number.

The change will come into effect from December 14, so pre-Christmas catch-ups are now a possibility.

Right now, Victorians can have 15 visitors to their homes and up to 50 people can gather in an outdoor space.

Small hospitality venues will be able to host one person for every two square metres — up to 50 customers.

QR code record-keeping will be mandatory.

For bigger venues, the density limit will stay the same, but the cap will increase to 150.

Total venue capacity will also rise to 300.

Queensland

Recently gatherings at homes and outdoors increased from 40 to 50. The 50-person limit includes members of the household.

Restrictions in indoor venues like restaurants and cafes have relaxed to allow one person per two square metres.

The Government hasn't flagged any further relaxation of the rules before Christmas.

South Australia

After a brief lockdown, South Australians have reverted to coronavirus restrictions that were in place before last Thursday.

So, the total number of people in a venue must not exceed one person per four square metres.

Ten people can gather at a private home while 50 can be at a private venue other than a residence.

Pubs, clubs and restaurants are capped at 100 people per venue, with no standing consumption of food or drinks, whether the customer is indoors or outdoors.

There is a maximum booking size of 10 people per group.

Western Australia

Western Australia is in Phase 4 of its restrictions. That means a one person per two square metre rule applies to gatherings.

That will include Christmas gatherings, unless circumstances change in the meantime.

Tasmania

Gatherings in households and shacks are limited to 40 people, not including members of that household.

For venues, 250 people are allowed in an undivided indoor space, and 1,000 in an undivided outdoor space, provided numbers don't exceed the one person per two square metre rule.

When inside the venue, guests can move around freely, but if they're indoors and drinking alcohol, they have to remain seated.

Premier Peter Gutwein said there'd been "no discussion" of changing the restrictions before Christmas, but that he'll continue to be guided by public health experts.

Australian Capital Territory

There are no limits on how many people can visit your home, but it's advised people keep a distance of 1.5 metres. The Government also recommends holding any gatherings outdoors, rather than inside.

People can now gather in groups of 500, so long as it doesn't exceed the one person per two square metre rule outside, or one person per four square metres inside.

You can eat and drink while standing in outdoor areas of venues.

The Chief Health Officer, Kerryn Coleman is set to deliver another checkpoint on November 27, where she'll officially review the current COVID-19 situation and make any decisions on whether or not it's possible to further relax restrictions.

Northern Territory

There are no limits on household gatherings, but people are encouraged to keep a 1.5-metre distance from those they don't live with.

There are also no restrictions on how many people can attend a hospitality venue, but from the end of the month, venues will be required to collect contact details from patrons to help with contact tracing if need be.