Growth was partly organic but the firm also went on an acquisition spree in 2017, buying up five different firms.
Profit per partner rose by 22%, bringing average partner income to above £250,000 for the first time.
In 2016, the firm, which is ranked the thirteenth largest in the UK, reported fee income of £74.5m, up 7.9%.
On the back of the latest results, Haines Watts has appointed its first group managing partner in 14 years. He is Michael Davidson who since 2008 has overseen revenue from the Greater London region shoot up from £3m to £30m.
Commenting on his new role, he said, “There’s a lot of energy in the team at the moment, a lot of ambition and huge potential.
“Under my predecessor, the business achieved growth and stability; we want to springboard off that success, show off our diverse range of expert advisers and aim even higher.”
The firm also announced two other board appointments; board member Darren Holdway has been appointed board chairman while Donna Bulmer, managing partner of Haines Watts north east region, joins the board for the first time.
Haines Watts puts much of its recent success down to its people strategy which is to bring in a younger, more diverse workforce. As a result, it says, 54% of staff are millennials and 15% Generation Z, and the average age of the workforce has come down to 36. Women make up 40% of the leadership development programme and 50% of the managers’ skills programme.