Anyone in the ACT who has been in New Zealand on or after 6 February must get tested and self-isolate until a negative COVID-19 result is received.
The news comes a day after three locally acquired COVID-19 cases resulted in Auckland being sent into lockdown.
Australia has suspended its trans-Tasman travel bubble for the next three days when the situation will be reassessed, meaning that anyone from New Zealand will have to now quarantine for 14-days upon arrival in the ACT.
Anyone who has been to New Zealand in the specified time frame should also closely monitor the NZ Ministry of Health website for exposure locations.
Anyone who has been to an exposure location also needs to contact ACT Health via the COVID-19 Helpline on 6207 7244.
As of today (15 February), 473 people are self-isolating in Canberra after new restrictions began on Friday meaning residents returning to the ACT from Victoria were forced to quarantine.
Non-residents who have been to Victoria have been banned from entering the Territory until midnight Wednesday (17 February), which is in line with the current five-day lockdown in the state.
Victorian health authorities will reassess the situation on Wednesday, Premier Daniel Andrews said.