Company Registration | Company Secretary | Accounting | Tax | Corporate Services
Welcome to ContactOne Professional Services, Singapore’s premier company registration specialist and one of the top 5 e-filing tax agent in Singapore. Established in late 2009, ContactOne Professional Services has since helped thousands of entrepreneurs fulfill their company setup, company secretarial, accounting, tax filing and statutory compliance requirements. Our suite of company registration services are tailored to assist new entrepreneurs in their first steps towards building their young companies and our comprehensive range of corporate solutions takes care of key supporting functions of the business, leaving you free to fully focus on driving your business forward.

Why ContactOne?

“As one of the most popular corporate service provider in Singapore, we are delighted to assist thousands of entrepreneurs every year to set them on their way to fulfilling their entrepreneurial dreams.”

- ContactOne

What People Say

“Genuine and sincere attitude are displayed company-wide. You will not find any corporate demeanors but rather, people with an honest attitude looking forward to help you.”

Philip T

“Their genuine attitude really touched me. I was thoroughly impressed that they are so efficient and friendly at the same time!”

Kenny O

“Theorists say it’s impossible but ContactOne has proven their ability to provide premium quality client service with market competitive pricing”

Alan S

“I have been a client with ContactOne for almost 5 years and I am delighted to say that I have not paid a fine for the years I’ve been with them.”


“I’m glad I have found ContactOne. Their fees are affordable and I received timely reminders for my annual return matters. I’m proud to say that I am now paying less than half of what I used to!”

Gloria Y

“Besides being an integral part of my annual filing process, ContactOne has been extremely helpful in providing valuable advice for a first time entrepreneur like me.”

Paul E

“Lean in Setup… Big on Service… I was able to settle an important secretarial matter all within one day because of the guidance ContactOne provided me before my big transaction :)”

Desmond T

Promising SME 500 2014 Top Business Luminary

Valued Partner for OCBC Bank for 6 consecutive years 2011-2016



We Respect Your Privacy. All information transmitted will never be shared, sold or disclosed to external parties

ContactOne Professional Services receives IRAS Recognition for 2 consecutive years!
We are delighted to be named one of the Top 5 firms with the highest number of e-filed Form CS Clients for both YA2014 and YA2015.
ContactOne Professional Services recognized as luminary for Promising SME 500 for 2014
We are delighted to be a business luminary of the Promising SME 500 for 2014! We would like to thank all of our staff and clients for allowing ContactOne to achieve this milestone.
Corporate Income Tax Filing for YA 2015 - Get it Sorted Early!
Have your completed your accounts for your financial year ending 2014? Please note that you will need to submit your tax returns by end November 2015. Get started now if you have not done so!

Get in touch

Get in touch
  • +65 6333 0633

  • +65 8666 3633


  • 1 Coleman Street,
    #10-06 The Adelphi
    Singapore 179803

  • Opening Hours: 10am – 7pm (Mon – Fri)