3:31PM GMT 22 Feb 2013
From April the Personal Independence Payment (PIP) will replace DLA for working-age people with a health condition or disability.
The Department for Work and Pensions is currently writing to all of the 3.2m DLA claimants about the controversial introduction of the new benefit, which includes a new face-to-face assessment.
Now disabled people will be able to check by answering a number of questions online if they will be affected, when they can make a claim for the new benefit and when they are likely to be reassessed.
The Coalition is moving to replace the DLA, which comes in two parts: a core payment of up to £77.45 a week and a "mobility component" of up to £54.05.
Ministers pledged to overhaul DLA following claims that it allowed many undeserving people to claim the benefit.
The total number of people claiming the payment was 3.2 million last year, up from 1.1 million when it was introduced in 1992.
Iain Duncan Smith, the Work and Pensions Secretary, has said he will replace the DLA with a benefit called Personal Independence Payment, which will have tighter criteria and a simpler approval system.
A DWP "impact assessment" of the plans, released last year, disclosed that the change would cut benefit payments by £2.24bn annually and lead to about 500,000 fewer claimants.
Esther McVey, the work and pensions minister, said: "Disability Living Allowance is an outdated benefit introduced over 20 years ago and needs reform to better reflect today's understanding of disability.
"We have extended the reassessment period and have made significant changes to the assessment based on feedback from disabled people and their organisations.
The new benefit will be introduced in April for new claims from areas including Merseyside, North West England, Cumbria, Cheshire and North-East England. People in these locations will be the first to claim PIP. From June DWP will then accept new claims for PIP from the rest of the country.
Reassessment of current DLA claimants will start from October - but only if there is a change in how their health condition affects them or if they come to the end of their existing DLA award.
This means the majority of existing claimants won't be reassessed until 2015 or later, giving DWP time to consider the findings of their first independent review in 2014. Children or those 65 or over are not affected.