Haines Watts is a professional services firm serving people who run their own businesses. Its approach combines financial expertise with an understanding of the ambitions and challenges business owners face, aiming to help them reach their goals with fewer missteps. The firm supports businesses at different stages, from start-up and funding through growth, international expansion, acquisitions and disposals, to succession or exit.

Its services include accounting, auditing, statutory audit and assurance, online and outsourced accounting, payroll, and business process improvement. Tax services cover personal, corporate and international tax planning, VAT and customs duty, tax investigations, and tax reliefs, including research and development. Haines Watts also provides wealth planning and private client services, alongside business advisory support for expansion and improvement. Its advisors help owners develop practical strategies, improve operations and make informed decisions. The firm also offers services to not-for-profit organisations and supports the voluntary, community and social enterprise sector.