Following the deal, partners and staff from the company will move into Kreston Reeves’s offices in Moorgate, London.
The enlarged Kreston Reeves will create a London office with more than 80 people and a firm with 52 partners and more than 450 staff in total.
Last year, the firm announced a merger with Spofforths, aiming to create one of the largest accountancy and financial advisory firms in the South East.
Michael Cook, head of Kreston Reeves London office, said, "This merger signals our commitment to growth in London.
“Munslows share our values and commitment to high quality client service. We are looking forward to welcoming and working with their team, which will provide a stronger base upon which to develop our services further and meet changing business needs.
"Clients of Munslows will continue to be looked after by their existing contacts and we do not anticipate any fee increases as a result of the merger".
Andrew Griggs, senior partner at Kreston Reeves, said, "We're delighted that Munslows have chosen to join us, a move that will strengthen our already strong London team.
“Their business, charity and private clients will benefit from the wide and deeper range of services and expertise we are able to provide including tax advisory, financial services, corporate finance, VAT and forensics.
"We are also confident that our longstanding membership of worldwide accounting network, Kreston International, will provide valuable new opportunities for Munslows clients.”