The number of customers using the Money Advice Service (MAS) is up 62% from 1.2 million in 2011/12 to 2.1 million in 2012/13, according to full-year results released today.
The figures exceeded the service's target number of users for 2012/13 by 0.2 million.
Some 3.4 million people have used the service, which is offered via the web, phone and face to face, since its launch in April 2011.
The total number of telephone contacts over the year was 81,000. Some 15,000 people opted to use the web chat (since launch at September 2012) and the service delivered 100,000 face-to-face sessions.
Almost 1.2 million action plans were delivered over the year, against a target of 1 million.
The service funded 158,000 free debt advice sessions delivered through partners in England and Wales, against 100,000 in 2011/12, before it took over responsibility for co-ordination of the sector. This marks a 58% year on year increase.
The results show overall satisfaction with the service: 89% of users said they would revisit it; 84% said the service provided them with the information they needed; and 74% said the service helped them decide on a course of action.
Caroline Rookes, chief executive of MAS, said: "These figures are just the tip of the iceberg - millions more people need our help.
"The plans for 2013/14 set out a vision for building on our work to date and helping those most in need to manage their debt, save and protect what they own.
"Our task, to change the money habits of a nation, is ambitious, but I am confident that, working with our partners, we can achieve it in the years to come."