Demystifying Singapore Payroll: A Guide to CPF, SDL, IR8A & AIS

Navigating employer compliance in Singapore can feel like deciphering alphabet soup. If you are launching or growing a business in Singapore, four regulatory acronyms will inevitably come up in your first month: CPF, SDL, IR8A, and AIS.

While frequently mixed up by first-time business owners, each term represents a distinct obligation with its own scope, rules, and deadlines. At Expede Tech Pte Ltd, we believe in streamlining financial and payroll operations through digital solutions and clear guidance. Here is our straightforward guide to keeping your business 100% compliant.

1. Central Provident Fund (CPF)

CPF is Singapore's mandatory social security savings scheme. Both employers and employees contribute a set percentage of monthly wages toward retirement, healthcare (Medisave), and housing needs.

• Who it applies to: Singapore Citizens and Permanent Residents (PRs) only.

  
  

• Who it excludes: Foreign staff on Employment Passes (EP), S Passes, or Work Permits.

  
  

• Contribution Breakdown: For employees aged 55 and below, total contributions stand at 37% (17% from the employer as an added operational cost, and 20% deducted from the employee's gross wage). Rates step down progressively for older age brackets.

  
  

• Deadline: Mandatory payments must be processed by the 14th of the following month.

  
  

Expede's Pro Tip: Employer CPF contributions are a direct company expense—not a deduction from your employee’s gross base pay. Always budget for this 17% top-up when designing compensation packages for local team members.

2. Skills Development Levy (SDL)

SDL is a separate, mandatory workforce training levy administered by SkillsFuture Singapore (SSG) to subsidize local skills upgrading initiatives.

• Who it applies to: All employees—including foreign pass holders, part-timers, casual workers, and paid interns.

• How it is collected: Conveniently, SDL is paid alongside your monthly CPF submissions, even though it serves a different national purpose.

• Key Distinction: Unlike CPF, SDL funds are pooled nationally into the Skills Development Fund and do not belong to individual workers.

3. IR8A Form

Form IR8A is an annual statement of employment income that every Singapore employer must prepare to summarize earnings for the tax year.

• Who requires an IR8A:

  • Full-time and part-time staff (residents and non-residents)

  • Company directors receiving director's fees or salaries

  • Board members and former employees who received income during the relevant calendar year

• Filing Deadline: 1 March following the end of the calendar year (covering income earned from 1 January to 31 December).

• Supporting Appendices: Depending on benefits provided, you may also need Appendix 8A (benefits-in-kind such as housing allowances) or Appendix 8B (gains from employee share options).

4. Auto-Inclusion Scheme (AIS)

AIS is not a separate document; it is the digital submission channel created by the Inland Revenue Authority of Singapore (IRAS). Through AIS, employers transmit IR8A income data electronically into IRAS's portal, where it automatically pre-fills into each employee’s personal tax return.

• Mandatory Requirement: Companies meeting IRAS’s headcount threshold are legally required to submit via AIS.

• Paper vs. Digital: Once registered on AIS, employers file online via myTax Portal and do not issue hardcopy IR8A forms to employees.

Payroll Requirements at a Glance

Payroll Term	What It Is	Target Audience	Frequency & Deadline
CPF	Social security contribution	Singapore Citizens & PRs	Monthly (by the 14th)
SDL	Workforce development levy	All staff (Local & Foreign)	Monthly (with CPF)
IR8A	Annual employment income statement	All employees receiving income	Annually (by 1 March)
AIS	Digital filing mechanism for IR8A	Mandatory for qualifying SMEs	Annually (by 1 March)

Common Compliance Traps to Avoid

1. Assuming SDL is local-only: SDL applies to all employees regardless of pass type or residency.

   
   

2. Missing Director Fees: All approved director fees must be reported on Form IR8A, even if the director does not draw a monthly salary.

   
   

3. Filing both digital and paper forms: If your business files via AIS, do not issue hardcopy IR8As to employees, as this causes duplicate reporting in tax assessments.

   
   

4. Late CPF Submission Penalties: Late payments trigger automatic interest charges from the day following the deadline.

Streamline Your Payroll with Expede Tech

Managing monthly CPF calculations, leave requests, expense claims, and year-end AIS tax declarations manually can distract you from scaling your startup or SME.

At Expede Tech Pte Ltd, we combine modern payroll software integrations with dedicated human expertise to automate your back-office compliance. From automated CPF/SDL submission to seamless end-of-year IR8A reporting via AIS, we ensure your business remains 100% online, compliant, and stress-free.

Need a hassle-free, digital solution for your Singapore payroll and accounting? Explore our digital corporate services or contact our team to set up your automated workflow today.