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Accounting and Corporate Regulatory Authority

Post-registration guide: Sole proprietorship or partnership

Lists the key requirements and services you need to know after you register your business.

Last updated 30 March 2026

Note: You must complete the immediate next steps to comply with ongoing requirements. This includes making Medisave payments on time and renewing your registration.

Immediate next steps

After you register your business, these are the next steps you need to take. Some have deadlines. Others help you run your business day-to-day.

Open a corporate bank account

You can open a corporate bank account immediately after Bizfile registration.

Available banks: ANEXT Bank, Bank of China, CIMB, DBS Bank, Maybank, OCBC Bank, State Bank of India, UOB.

(Required) Apply for Corppass

Corppass is the single login method for all government-to-business transactions.

  • When you can apply: One day after you get your unique entity number (UEN).

  • Who needs Corppass: All entities (including non-profit organisations) that deal with government agencies online. This includes Bizfile eServices.

  • How to apply: Apply for a Corppass account.

(Required) Check if you need licences and permits

You may need additional licences or permits before you start operations.

Licence and permit requirements

Requirement

Ways to check

Business licences

  1. Use the GoBusiness Licence e-Advisers to check what you need.

  2. Use the "Self-Service" feature to apply for multiple licences.

If you do not need more licences, you can start the business immediately after registering.

More details: Licensing your business.

Trading permits (for import or export businesses)

If your business moves goods across Singapore's borders, you need a Customs account to apply for trade permits.

More details: Quick guide for new traders and registration services

More details: Getting a licence for your business (video)

Download your free Business Profile

You will get a free Business Profile with your business's details after you register.

Note: Download your Business Profile within 30 days or the free copy expires.

Before you start operations

Complete these final steps before you start operations. They cover employment, data protection, and taxes.

(Employers) Apply for CPF submission number

If you plan to hire staff, you need to apply for a CPF Submission Number (CSN).

You will need this for monthly CPF payments.

(Employers) Know your duties as an employer

As an employer, you should:

Register a Data Protection Officer (DPO)

All organisations are required to appoint a DPO under the Personal Data Protection Act 2012.

You can register your organisation's DPO at the PDPC website, or search for the information of registered DPOs at the DPO Registry.

Know your tax duties

Besides personal or corporate tax, you may also be liable to register for Goods and Services Tax (GST):

Tax duties

Business structure

Tax duties

Sole proprietorship

  • Profits are taxed at your personal income tax rates.

  • You must register for GST if either applies:

    • Your taxable turnover exceeds $1 million per calendar year.

    • You expect your taxable turnover to exceed $1 million in the next 12 months.

  • Taxable turnover is based on all your sole proprietorship businesses and income from trade, work and other jobs.

Partnership

  • Profits are taxed at each partner's personal or corporate tax rates.

  • You must register for GST if either applies:

    • Your taxable turnover exceeds $1 million per calendar year.

    • You expect your taxable turnover to exceed $1 million in the next 12 months.

  • Taxable turnover is based on turnover from all partnerships with the same group of partners.

GST InvoiceNow Requirement

Under the GST InvoiceNow Requirement, all GST-registered businesses will be required to transmit invoice data to IRAS via the InvoiceNow network. This mandatory participation will be implemented progressively, in the following phases:

Implementation details

Implementation Date 

Businesses Involved

1 November 2025 

Companies that register for GST voluntarily within 6 months of incorporation date 

1 April 2026 

All new voluntary GST registrants, regardless of their incorporation date or business structure 

1 April 2028 

  • All new compulsory GST registrants

  • Existing GST-registered businesses with total annual supplies ≤ S$200,000 

1 April 2029 

Existing GST-registered businesses with total annual supplies ≤ S$1,000,000 

1 April 2030 

Existing GST-registered businesses with total annual supplies ≤ S$4,000,000 

1 April 2031 

Existing GST-registered businesses with total annual supplies > S$4,000,000

Total annual supplies refer to the total value of standard-rated, zero-rated and exempt supplies made in all the prescribed accounting periods ending in calendar year 2025.

For more information about GST registration, please visit the IRAS website.

For a holistic digital approach that integrates your business needs with seamless tax compliance, you can consider adopting accounting and/or payroll solutions that support #SeamlessFilingFromSoftware (#SFFS). These solutions make it easy to file tax returns or submit information to IRAS directly with just a few clicks.

Optional business services

Protect your trade mark

You can register your trade mark with Intellectual Property Office of Singapore (IPOS). This protects your business name, logo, or other graphics.

Digital solutions and resources

Available resources

Resource

Details

DashBod integrated software

Cloud software that combines accounting, reporting, and HR tools.

What it does:

  • E-invoicing access

  • Payroll and leave management

  • Claims processing

Features:

  • Pan-European Public Procurement On-Line (PEPPOL) Access Point for e-invoicing

  • Payroll and leave management

  • Claims processing

  • Developed by SMECEN (Association of Small and Medium Enterprises (ASME) subsidiary)

InvoiceNow-Ready solutions

Introduced in 2019 by IMDA, InvoiceNow is the nationwide e-invoicing network that enables businesses to easily send and receive e-invoices in a standard digital format across different finance systems.

It automates invoice data transmission directly into buyers’ accounting systems, eliminating the need for manual data entry and reducing errors.

Businesses can leverage a single invoicing solution of their choice to invoice business partners and government entities while ensuring seamless tax compliance.

You can select solutions from IMDA’s accredited InvoiceNow-Ready Solution Providers (“IRSP”) list as your accounting or finance system.

Free-of-charge e-invoicing solutions are also available.

Cybersecurity resources

Protect your business from cyber attacks. These can damage your reputation, finances, and operations.

Register your SMS Sender ID

If you plan to send SMS messages with your business name, you should register your Sender ID.

  • Why: Unregistered IDs show as "Likely-SCAM" to customers.

  • Who needs this: Businesses that send SMSes with business names to Singapore mobile users.

  • How to register: Register via SMS Sender ID Registry.

  • More details: Contact the Singapore Network Information Centre (SGNIC) smsregistry@sgnic.sg or visit the SGNIC website.

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