Jon Thorne, an accountant who has worked for clients as diverse as Sheffield Wednesday Football Club and Oxfam, has been appointed head of financial regulation at the Charity Commission.
Thorne, who became one of the watchdog's first accountants when he joined the commission in 1992, said he hoped to work closely with the voluntary sector to improve financial accountability, transparency and compliance.
"We are looking at a step change in accounting in the sector, in terms of both financial and performance reporting," he said.
Thorne was seconded from the commission to Oxfam for six months in October 2000, where he worked to match restricted funding streams with suitable projects.
Simon Gillespie, director of operations at the commission, said: "We have been working closely with charities, umbrella bodies and others to improve accountability. This appointment provides a further opportunity to reinforce that engagement."