CPF gets most of the attention in Singapore payroll, and rightly so — but it is not the whole picture. A compliant Singapore payroll process also involves the Skills Development Levy every month, annual income reporting through Form IR8A, tax clearance via Form IR21 when foreign employees leave, and the Foreign Worker Levy where applicable. None of these is complicated on its own, but together they form the rhythm of Singapore payroll compliance. This guide covers the obligations beyond CPF.
The Skills Development Levy (SDL)
The Skills Development Levy is a monthly levy that funds national workforce training and development. Crucially, SDL applies to all employees — including foreign work-pass holders who are exempt from CPF. So even though an Employment Pass holder attracts no CPF, the employer still owes SDL on their wages.
SDL is charged at 0.25% of an employee's monthly wages, but only on wages up to a cap of S$4,500 per month. There is also a small minimum. The practical effect of the cap is important: for any employee earning S$4,500 or more a month, the SDL is a flat S$11.25 — not 0.25% of their full salary. A common error is calculating SDL on the entire salary for higher earners rather than on the capped S$4,500, which over-charges the levy.
SDL is paid together with CPF, through the CPF Board, on the same monthly timeline.
Form IR8A — annual income reporting
Here is where Singapore differs markedly from countries like India. Singapore does not have monthly income-tax withholding for resident employees. Employees file and pay their own income tax individually. The employer's role is not to withhold tax monthly, but to report each employee's earnings to the tax authority once a year.
That report is Form IR8A. Employers must submit IR8A — detailing each employee's wages and benefits for the year — to the Inland Revenue Authority of Singapore (IRAS) by 1 March. For most employers this is done electronically through the Auto-Inclusion Scheme, which feeds the income information directly into employees' tax assessments. Accurate IR8A reporting matters because it is the basis on which employees' personal taxes are assessed; errors flow straight into their tax bills.
The annual IR8A run is a key payroll event — it requires pulling together the full year's wages, allowances, and benefits-in-kind for every employee, accurately.
Form IR21 — tax clearance for departing foreign employees
When a foreign (non-citizen) employee ceases employment or is about to leave Singapore, the employer has a specific obligation: tax clearance via Form IR21.
Because foreign employees pay their own tax but may leave the country, the law requires the employer to notify IRAS ahead of the employee's departure and, importantly, to withhold any monies due to the employee until tax clearance is obtained. This is the one situation in Singapore where the employer does withhold — not as monthly PAYE, but as a one-time clearance mechanism to ensure a departing foreign employee's tax is settled before they leave. IR21 must be filed within the required timeframe before the employee's last day or departure, and getting the timing right is important to avoid holding up the employee's final pay unnecessarily or, conversely, releasing funds that should have been withheld.
The Foreign Worker Levy (FWL)
For employers of S Pass and Work Permit holders, there is an additional monthly cost: the Foreign Worker Levy. FWL is a pricing mechanism the government uses to manage the foreign workforce, and the levy amounts vary by pass type, sector, and the proportion of foreign workers an employer has. Employment Pass holders are not subject to FWL, but S Pass and Work Permit holders are, and the levy can be a significant ongoing cost for companies that rely on these passes. The applicable FWL rates are set by the authorities and depend on the specifics, so they need to be confirmed for a given workforce.
The Singapore payroll calendar at a glance
Putting the recurring obligations together: each month, CPF, SDL, and community fund deductions are paid by the 14th of the following month through the CPF Board. FWL, where applicable, is paid on its monthly cycle. Once a year, by 1 March, Form IR8A reports each employee's prior-year income to IRAS. And on an event basis, Form IR21 handles tax clearance whenever a foreign employee is leaving Singapore.
Once a company has a clean monthly process, a reliable annual IR8A run, and a leaver checklist that triggers IR21, Singapore payroll runs quietly in the background. The system is highly rule-bound but not opaque — the CPF Board, IRAS, and the Ministry of Manpower all publish clear guidance.
Common mistakes beyond CPF
The recurring errors include:
Calculating SDL on the full salary for higher earners rather than the capped S$4,500, over-charging the levy.
Forgetting that SDL applies to foreign work-pass holders even though CPF does not.
Missing the 1 March IR8A deadline or submitting inaccurate income figures that distort employees' tax assessments.
Failing to file IR21 — or filing it late — when a foreign employee leaves, which can create liability for the unpaid tax.
Releasing a departing foreign employee's final pay before tax clearance, when it should have been withheld.
Overlooking the Foreign Worker Levy for S Pass and Work Permit holders.
Why the full Singapore picture is easier on a unified system
The obligations beyond CPF are individually simple but collectively easy to drop — SDL with its cap, the annual IR8A pull, the event-triggered IR21, and FWL for the right pass types. When wage data, employee pass types, and departure events live in disconnected systems, ensuring SDL is capped correctly, IR8A captures the full year accurately, and IR21 fires whenever a foreign employee leaves becomes a manual coordination task.
When payroll for Singapore sits on a single database, SDL is computed on the capped wage automatically including for foreign staff, the IR8A run draws the complete year's data from one source, and an employee's pass type and departure can trigger the IR21 obligation rather than relying on someone remembering. Nothing has to be assembled across tools. This is part of how Helion handles Singapore payroll within a multi-country platform — the full set of obligations driven from one source of truth, so the monthly levies, the annual report, and the leaver clearance all stay consistent. For a company running Singapore alongside India and UAE payroll, one system absorbing each country's distinct obligations is what keeps the whole operation manageable.
This guide reflects the position as of 2026. SDL rates and caps, IR8A and IR21 requirements and deadlines, and Foreign Worker Levy rates are set by IRAS, the CPF Board, and the Ministry of Manpower and can change. This is general information for employers, not a substitute for advice from a qualified Singapore payroll professional on your specific situation.