The National Disability Insurance Agency has released a detailed timetable outlining when eligible people will be able to access the scheme.

The transition schedule reveals children under two, school leavers between 2008 and 2013 who have high and complex needs and a post-school options package and ACT residents born between July 1, 1949 and June 30, 1950 will be the first to access the NDIS from July.

Canberrans born between July 1, 1950 and June 30, 1951; 2014 school leavers and children aged two to four not starting school next year will be able to access the scheme from October.

High school and primary school students and those aged between 49 and 62 will be phased in next year followed by Canberrans aged between 20 and 48 in 2016.

Disability group homes will transition into the NDIS rollout separately - home by home- allowing for each household to be assessed as a group and moved together.

After it starts on July 1, as many as 5000 people will take part in the NDIS trial in the ACT.

NDIS ACT Trial Site Manager Jillian Paull said people would be phased into the scheme depending on their age or life stage and the transition schedule would help ensure the NDIS was sustainable and equitable.

Disability Minister Joy Burch said the ACT government had worked hard with the NDIA on the timetable to gradually move people into the NDIS.

''The NDIS is a major change and it is important that people know when they will be starting their conversations with the NDIA about their assessments,'' she said.

''People who are receiving services will continue to receive those services until they have received their NDIA assessment and their package is in place.''

Ms Paull said NDIS offered an opportunity to change the lives of people with disabilities.

''Some people might not want there to be any change to their current arrangement and some people may want there to be a lot of change and this provides the opportunity for that flexibility,'' she said.

''We are very much looking forward to the opportunity to work closely with the Canberra community, with service providers, we will be welcoming new providers to the ACT, but most importantly to work alongside people with a disability in Canberra to help make some fundamental changes.''

The NDIA will contact people receiving disability support services, asking them to complete an access request form. The form will help determine a person's eligibility.

''If they are eligible, we will then start a whole lot of conversations to help them think about what their plan might look like, what are their goals and aspirations, what are their current and future support needs and how can we provide other supports to help them achieve their goals and aspirations,'' Ms Paull said.

To be eligible for the NDIS, a person must live in Australia as a permanent resident, be under the age of 65, have a significant or permanent disability and they must meet ''early intervention'' requirements.

For more information about NDIS eligibility, visit: www.ndis.gov.au/my-access-checker.

The NDIS's Canberra offices on Northbourne Avenue in Braddon and at Nature Conservation House at Emu Bank, Belconnen will open from July 1.