The service, which began as a pilot a year ago, is open five days a week and is staffed by a team of eight money experts who are trained to the same level as authorised financial advisers.
Members can call weekdays between 9am and 5pm and a Which? personal finance expert will call them back.
Which? chief executive Peter Vicary-Smith says: “The difficult financial climate has highlighted the lack of places to go for truly independent, unbiased, free help and guidance on all aspects of personal finance, and we saw a need to fill this gap for our members with our own money helpline.
“The service has been extremely popular, and we are confident that every one of the people who have so far telephoned the helpline has gone away more knowledgeable and more confident to deal with their money issues, whatever they may be.”
According to Which? savings and investments are the two most popular categories, attracting 30 per cent and 15 per cent of calls respectively.