OS1 Enterprise Team

We are Tech Savvy, Cloud Accountants & CPAs

All in the name. Organisation-Satisfaction- your 1st Port of Call

Save yourself from headaches

Compliance & Advisory Services

Get your Peace of Mind Today!

Learn how you can free up your valuable time

& focus on your business growth.

Corporate Secretarial Services

We would like to talk to you!

Find out how we can help you to achieve your Business Goals!


Outsourcing Free Small Business Owners to Focus

  • Do you have budgetary concerns on hiring and retaining full-time accounting team?
  • Do you spend most of your time attending to administrative chores, rather than revenue generating activities?
  • Do you have up-to-date bookkeeping records with accurate financial information so you will always know how your company is performing?
  • Do you understand about ever-changing statutory regulations in Singapore concerning ACRA, IRAS and Payroll laws?

Do you happen to have any of those problems? Don't worry! Our services are designed to ensure that your company is on the right track to success regarding all financial and legal requirements.

Singapore Business Services We Offer

Accounting Services

Stop destroying your business with poor quality accounting and bookkeeping services. Let us take the guesswork out of the equation by offering top notch outsourced accounting services.

Outsourced Bookkeeping Services

Supercharge your profits with our professional bookkeeping services in Singapore. Focus on what you do best and let us take care of the rest!

Income Tax Services

Taxes are hard to understand and manage, and without proper knowledge, you can end up with stress and strain. Let us offer you the best tax management services.

Company Incorporation Services

Singapore is a superb location for domestic and international businesses to establish their head office or offshore headquarters. And offers considerable tax, financial, and operational advantages to businesses. For start-up companies, we offer a comprehensive Incorporation of Company package that includes all the required items to set up.

Company Secretarial Services

The Singapore Companies Act (SCA) makes it compulsory for every company in Singapore to hire a minimum of one local secretary within 6 months of its incorporation. If you’ve just incorporated your company in Singapore, then you’re in need dire of our company secretarial services.

Payroll Processing

Payroll can seem tedious. Let O.S.1 handle it for you – leaving you free to focus on the core activities of your business. We will process payment instructions, produce statutory reports, salary reports, and electronic payslips for online viewing by specific personnel, and file bank payments for you.

Financial Architecture & Advisory

As your Proactive Accountant, our team of Certified Financial Advisers will assist your business with professional financial advice and guidance on the healthy management of your financial situation.Be assured while you chase new clients and handle the important stuff, we'll do all the hard and boring stuff.

Real Time Info-tell via Cloud-based Automation

With our Cloud Business Accounting software services, you can now do seamless integration of all your accounting, administrative, operating, stock management, and even payment gateway applications. This will streamline your administrative responsibilities and reduce time wasted on redundant tasks.

Integrated Business Advisory Services

You will be working with an expert team that has partnerships with industry leaders in Human Capitalization, Learning & Development, Branding & Marketing, Franchising & Licensing, Business Matching, Legal Advisors, Government Assistance Schemes advisory, Investment Accounts and Information Technology.
OS1 Enterprise Team

About OS1 Enterprise

Leave the Number to Us, Obtain Peace of Mind

We're a full-service accounting firm based in Singapore with our team having accounting & audit experience ranging from more than 2 to 15 years. Our philosophy is that a happy team makes for happy clients, so we do our best to provide a conducive work environment for our excellent bookkeepers, accountants, and virtual CFOs. This ensures that our clients get the best service possible from a highly motivated team.

Testimonials - Happy Client, Happy Business

  • The services that OS1 rendered are fast and accurate. Will recommend to my business partners for sure. Keep up the good work.
    Kenny Lim
  • “Nicole has done a fantastic job managing my small business accounts in the consulting and education sector. She works accurately and efficiently, is friendly and approachable, uses the right tools to get the job done and is flexible to meet changes in circumstances.”
    Hugh Terry, Rain Trees Kindergarten Pte Ltd
  • “We look to O.S.1 to take care of our tax preparations and accounting needs. They are highly responsive and a pleasure to work with. We are very satisfied with their services.”
    P.K.Kakoulidis Shipping Singapore Pte Ltd
  • “I confirm that I have dealt with O.S.1 Pte Ltd since Aug 2011, during which time they have provided my business with excellent support in the area of account services. Their work has help us in smoothening the account activities in our company enabling us to have reliable and dependable report to our HQ in Japan on time.”
    Frankie Ong, Senior Manager of Sumiden International Trading (S) Pte Ltd
  • “Nicole (Or OS1 Pte Ltd) is one of the few professional accountants whom I’ve come across who is meticulous & detailed in her work. She listens attentively to our company’s needs, and able to advise us on various scenarios & alternatives choices for our company, be it for new set up or expansion. Her patience & valuable experience has also made us feel like she’s part of our business team, instead of just an accountant. Many times, she has extended extra effort to provide us with invaluable-added service, which has once again strengthen her comparative strength over others.”
    Kellin Chan – OIG International Pte Ltd
  • “Ms Nicole, not only get us registered, she’s to do and file our monthly CPF Contributions for our Employee (E-Filing) and update employee contributions when necessary in regards to their age limits and skills development Levy / Benefits. Objectivity to run the company smoothly with less “Paper Work”. If you want the same benefits, you should use O.S.1 Pte Ltd.”
    Mr Eddie H.P.Tan , Gloss & Glow Pte Ltd
  • “Nicole provides a very professional accountancy service. She’s extremely helpful, efficient, pleasant to do business with, goes above and beyond, and is prompt in returning e-mails. I would not hesitate to recommend her services.”
    Maimunah Alhabshi, Project Spirituality
  • “Nicole has always handled her work with responsibility and pride. She is also very neat and tidy with her work. Nicole is also very fast and quick in her all her work and always leave a very good impression in all her work. She is also very hardworking and devoted to her work. Therefore, I would want to thanks her for all her hard works and effort and congratulate for her new company.”
    KK.Teow, Director of Baker Deli One Pte Ltd

We welcome inquiries. Please allow us to get in touch within 2 working days after submitting any inquiries.

Alternatively, you can call +65 6873-2886 or Call/SMS +65 9889-4776 to speak with our friendly   accountant.

O.S.1 Pte. Ltd.
2 Leng Kee Road
#04-09 Thye Hong Centre
Singapore 159086

T +65 6873-2886
M (+65) 9889-4776


Transportation details
Nearest MRT station – Redhill MRT (EW18) Walking is 5 to 7 mins to our office
Nearest Bus Stop – Bus 32, 33, 64, 120, 132, 145 Walking is 5 to 7 mins to our office