TAX

IR8A Form Singapore

The employer form behind every employee’s annual income tax filing

Last updated: September 2026

Form IR8A is the annual return every Singapore employer must complete for each employee, reporting salary, bonus, commission, and benefits-in-kind for the preceding calendar year, so the employee’s income can be assessed for tax by the Inland Revenue Authority of Singapore (IRAS).

Not financial advice. All figures for educational reference only. Data as at September 2026.

Key Takeaways

• Form IR8A reports an employee’s full-year employment income and must be ready by 1 March each year for e-filing season.
• Employers on IRAS’s Auto-Inclusion Scheme (AIS) submit the data electronically, and the figures are pre-filled directly into the employee’s tax return.
• Appendix 8A covers benefits-in-kind such as housing and company cars, Appendix 8B covers gains from employee share plans, and Form IR8S covers excess CPF contributions needing a refund.
• Employees whose employer is not on AIS must manually key in their IR8A figures themselves when e-filing.
• Errors in IR8A, especially missing benefits-in-kind or share plan gains, are a common trigger for an IRAS query or reassessment.

Table of Contents

What Is Form IR8A?

Form IR8A is the standardised document Singapore employers use to report each employee’s employment income to the Inland Revenue Authority of Singapore (IRAS) for a given calendar year. It exists because IRAS needs one consistent record of every dollar an employee earned through their job, in order to assess income tax accurately under the Income Tax Act, rather than relying on employees to self-report income that their employer already tracks in payroll.

IR8A is distinct from two related forms that are easy to confuse. Form IR21 is filed only when a foreign employee is leaving Singapore or leaving their job, to clear their tax before final payment. Form IR8S applies only when an employer has over- or under-deducted an employee’s CPF contributions and a refund or adjustment is needed. IR8A is the one form that applies to essentially every employee, every year.

The filing period runs on a fixed annual cycle: employers prepare IR8A based on the calendar year just ended (1 January to 31 December), and the deadline to have it ready, whether submitting electronically or issuing it to the employee, is 1 March of the following year, ahead of the individual income tax filing season that typically closes around mid-April.

How Does It Work in Singapore?

Most Singapore employers today are on IRAS’s Auto-Inclusion Scheme (AIS), which has expanded steadily over the years and is now effectively mandatory for the large majority of employers. Under AIS, the employer submits each employee’s IR8A income details directly to IRAS electronically by 1 March, and those figures then appear pre-filled in the employee’s income tax return on IRAS’s myTax Portal, removing the need for the employee to manually enter salary data.

For the smaller number of employers not on AIS, the process is more manual: the employer must prepare a physical or PDF copy of Form IR8A and give it to each employee by 1 March, and the employee then has to key the figures in themselves when filing their tax return online.

What actually goes into an IR8A is broader than just base salary. It includes gross salary, bonuses, commissions, director’s fees, and cash allowances, plus two important appendices where relevant: Appendix 8A, which reports benefits-in-kind such as employer-provided housing, a company car, or a subsidised or interest-free loan; and Appendix 8B, which reports gains from employee share option or share award schemes, such as ESOPs or RSUs, that vested or were exercised during the year.

A practical wrinkle worth knowing is that even under Auto-Inclusion, the pre-filled IR8A figures on myTax Portal are not treated as automatically final until the employee submits their return. Anyone who spots a discrepancy, such as a bonus paid after their last working day or a benefit-in-kind figure that looks off, can and should amend the pre-filled amount before submitting, rather than assuming the pre-fill is correct by default.

Form IR8A Example

Consider an employee earning a S$72,000 base salary plus a S$10,000 annual bonus, whose employer also provides a company car with an annual taxable benefit-in-kind value of S$6,000, reported under Appendix 8A. Her total reportable income on Form IR8A for the year comes to S$88,000. Because her employer participates in the Auto-Inclusion Scheme, this full amount is submitted to IRAS by 1 March and appears pre-filled in her tax return. Her only remaining task is to check the pre-filled figures against her own payslips and declare any additional reliefs, such as an SRS contribution, before the filing deadline.

Advantages of Form IR8A

• Auto-Inclusion removes the manual data-entry step for most employees, cutting the chance of transcription errors when filing.
• It creates a standard, auditable annual income record that is frequently required for bank loan applications, HDB loan eligibility checks, and visa or PR applications.
• It consolidates every form of employment income, cash pay, bonuses, and non-cash perks, into one document, so nothing is missed at tax time.
• A clean, consistent IR8A history over several years can smooth other financial applications that ask for proof of income or a Notice of Assessment.

Risks and Limitations

• If an employer under-reports benefits-in-kind or share plan gains, the employee ultimately bears the underpayment and any late-payment penalty once IRAS identifies the discrepancy on audit.
• Employees at AIS-participating employers should still check the pre-filled numbers against their own payslips rather than assume payroll data is automatically error-free.
• Freelancers, sole proprietors, and directors paid mainly via dividends rather than payroll do not receive an IR8A at all, and must self-declare trade income, which carries more under-reporting risk.
• Appendix 8B, covering employee share plan gains, is one of the sections most prone to error, since RSU and ESOP timing rules are often counter-intuitive for non-specialist payroll teams.

IR8A vs IR21 vs Form IR8S

These three IRAS forms are often confused because they all relate to employment income, but each serves a distinct purpose and timing.

Source: IRAS e-Submission and Auto-Inclusion Scheme guidance, 2026.

The Bottom Line

For Singapore employees, IR8A is the document that turns a year of payroll and perks into a single, IRAS-recognised income figure. Most workers now never touch it directly because Auto-Inclusion does the work, but checking the pre-filled numbers against your own payslips each tax season is still worth the five minutes it takes.

Frequently Asked Questions

Related Terms

• Certificate of Residence (Singapore)
• Tax Clearance for Foreigners Leaving Singapore (IR21)
• Singapore Income Tax Rates 2026
• Group Relief (Tax) Singapore

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