C K Yau & Co (“CKY”) was formed by late Mr. C K Yau and shared office with Hong Kong School of Commerce (HKSC) at 50-54 Leighton Road Causeway Bay. Initially there were only 5 clients.


Late Mr. C K Yau introduced the Association of International Accountants (AIA) from the UK to Hong Kong and formed AIA-Hong Kong Branch.


Merged with H N Li & Co and moved to Alexandra House in Central which was managed by Mr. Lau Man Sung as late Mr. C K Yau was concentrated on the operation of HKSC.

Late Mr. C K Yau jointly with other professional tax practitioners formed the Taxation Institute of Hong Kong (TIHK).

This was the last year to issue practising certificates to auditors under the Stamp Duty Ordinance Cap. 117 and thereafter by the Hong Kong Society of Accountants (HKSA) formed in 1973.


After the merger, the company moved to another office at Bank of Canton Building (now Standard Chartered Bank building) in Central.


Office moved to Yue Shing Commercial Building, Queen Victoria Street, Central, where HKSA office was then located.


Late Mr. C K Yau immigrated to Vancouver, Canada and Mr. W H Lam was engaged as signor for the firm. Ms. Lindy Yau was also practising in Mr. W H Lam's office before getting her practising certificate.


The firm was operated as sole proprietor until Ms. Lindy Yau joined the firm as partner in the year.


Office moved again to 17/F, Cantake House (now Pacific Place Three) in Wanchai and late Mr. C K Yau left the partnership due to health reason, leaving Ms. Lindy Yau as the sole practitioner.


Mr. Joseph Yau returned from Vancouver, Canada after qualified as Chartered Accountant to join the firm.


After three years of local working experience and in obtaining the local practising qualifications, Mr. Joseph Yau was admitted as a partner of the firm.


Mr. Joseph Yau formed the Certified Management Accountants Society of British Columbia, Canada (CMABC) - Hong Kong Branch and served to run its secretariat office.


Office moved to 12/F of Hua Hsia Building in Wanchai which was renamed as Pico Tower now and held an opening ceremony.

Mr. Joseph Yau was appointed as President of CMABC-HK Branch.


Merged with William M C Tong & Co in the year.

Late Mr. C K Yau was named as an honorary member of AIA on its HK Branch 25th anniversary dinner.


Mr. Joseph Yau was elected as the President of Society of Chinese Accountants and Auditors (SCAA).


Mr. K T Tam and Ms. Janice Leung were promoted as principals of the firm. Ms. April Ng was in charge of the company’s secretarial department and introduced CSA secretarial software to the company. Mr. Terence Mah was in charge of the accountancy and IT department and strived to streamline the firm’s efficiency and effectiveness.

Mr. Joseph Yau was appointed as President of the Hong Kong Institute of Accredited Accounting Technicians (HKIAAT).


Use of main server to connect all computers and the firm’s website was developed.

Mr. Joseph Yau was awarded as the first Honorary member for HKIAAT.


During SARS, a temporary office was set up at HKSC King's Road Centre for contingency purposes whereby half of the manpower was moved there to work.


Mr. Joseph Yau was honoured with FCMA of Canada for his dedication and contribution to the Society of Management Accountants of Canada.

We formed our own consultancy company in Shenzhen PRC under CEPA.


Merged with W H Lam & Company to form W H Lam & Partners CPA Limited which operated at Room 905-6 of Arion Commercial Building in Sheung Wan, Hong Kong.

Mr. K T Tam and Ms. Janice Leung were promoted to partners of the firms. Mr. Terence Mah was promoted as director for our Administration and HR department and at the same time Ms. April Ng was promoted as director for our company secretarial department.

Mr. Joseph Yau was elected as President of AIA-HK branch.

Our founder, late Mr. C K Yau deceased in the same year.


Both companies worked together at 11-13/F Pico Tower, Wanchai, Hong Kong and a cocktail ceremony for the 45th anniversary was held.

Joined US based The International Accounting Group (TIAG) to expand our international network with accountants and lawyers.

Changed to alternate Saturday work-week.

HSBC granted our firm as its official intermediary.


CKY was incorporated to continue the practice under the name of C K Yau & Partners CPA Limited.

Hang Seng bank granted our firm the status of Qualified Intermediary Scheme.


Our firm hosted the regional conference for TIAG in Hong Kong.


Our senior staff went for "Away day" to determine our future years planning and from then on to work with such objectives in mind.


Obtained the Hong Kong Association for Customer Service Excellence (HKACE) Award as one of the top 10 SME Customer Service Excellence.


Manpower Developer (MD) Award for SME was granted by the Employees Retraining Board (ERB).

Started our 5 day work-week.

After being granted with HKICPA Authorized Employer, ACCA Approved Employer, CPA Australia Employers' Club, we joined TIHK as Accredited Employer for CTA students.

To celebrate the firm's 50th anniversary, trip to Taiwan was held for all staff with their families and friends together with the firm’s Logo competition announcement for 50th anniversary.


Mr. Joseph Yau, was elected as President of The Taxation Institute of Hong Kong.


Ms. Lindy Yau retired from the practice but continued to serve as a Senior Consultant.

Mr. K T Tam and Ms. Janice Leung helped to host the TIAG International Conference in Hong Kong.


Former director, late Mr. W H Lam deceased in the year.


Introduced new incentive measures for staff, such as birthday leave and casual Friday.


Ms. Annie Lai was promoted to practising director of the firm in January 2019.

Revamp of our website for a new look of our firm.

Mr. Joseph Yau retired as the managing director in April 2019 but continue to serve as a senior practising director on strategic move. Meanwhile, Mr. K T Tam was appointed as new managing director to continue navigating the firm and leading the younger team of qualified accountants to capture new opportunities.


Mr. Wilson Yau was promoted to director of the firm in June 2020.

C.B. Wong & Co. merge its practice with our firm on 1 July 2020. The synergy in sharing resources enables the firm to provide more comprehensive, competitive and professional services.

Renovation of 12 Floor Office on July 2020 to provide a more comfortable and ideal workspace which is accommodating for everday operations for our staff.