Your first hire in Southeast Asia looks straightforward until tax registration lands on your desk. Indonesia requires an NPWP before the contract is signed. Malaysia needs a Personal Income Tax file opened and often a BRN check. Singapore ties everything to an NRIC. Thailand demands a Thai tax ID card. Miss one step and you're in compliance breach on day one—and the delays cascade into missed onboarding windows and payroll gaps. This is not a compliance article that stops at 'check your country's rules'. Instead, we've mapped the exact workflow for each country: what document to ask for, when to verify it, how to calculate deductions correctly, and the three probation traps that sink most first hires. Indonesia: NPWP is a hard gate—verify before contract signature Indonesia's NPWP (Nomor Pokok Wajib Pajak) is the national tax ID. Your employee must either have one already or apply for it as part of onboarding. The critical mistake: treating this as a 'we'll sort it out later' task. LHDN (the tax authority) does not forgive back-dated registrations. The workflow: Ask the candidate for their NPWP before signing the contract. If they don't have one, they must apply to LHDN. This typically takes 1–3 weeks. Verify the NPWP format: 15 digits, starting with the employee's birth date (DDMMYY) followed by a 9-digit sequence. Cross-check via the online NPWP verification portal or request a tax letter from LHDN. Only then sign the employment contract and register the employee with the social security system (BPJS Ketenagakerjaan). Once the NPWP is verified, you're responsible for calculating income tax withholding monthly. Indonesia's tax brackets are progressive (5% to 30%), but there's a standard deduction of 13.5 million IDR for a single employee. Miss this deduction in your payroll software and your gross-to-net calculations will misfire. The probation period in Indonesia is 3 months maximum (extendable once to 6 months total with written agreement). During probation, you can terminate without severance, but you must still pay wages up to the termination date and provide notice. A common gap: contractors who think they don't need an NPWP. Wrong. If you're paying them directly, LHDN treats them as taxable income, and you're liable for withholding. Malaysia: BRN, PAN, and the EPF trap Malaysia requires three separate IDs for an employee: a Business Registration Number (BRN) for your company, a Personal Account Number (PAN) for the employee's tax file, and proof of Employees Provident Fund (EPF) registration. The workflow: Ask the employee for their MyKad (national ID card) or passport, and confirm their NRIC (National Registration Identity Card number, or equivalent for non-citizens). Verify their PAN status with Inland Revenue Board (IRB). You can ask them for a recent tax assessment notice, or submit a PAN inquiry yourself. Register the employee with EPF (Employees Provident Fund) within 3 days of employment. Both employer and employee contribute—employer pays 13%, employee pays 11% of gross salary (up to a maximum contribution ceiling). Report the hire to SOCSO (Social Security Organisation) for work injury and invalidity cover. The EPF trap is real: if you calculate contributions as a flat 13% + 11%, you'll overshoot the monthly ceiling (currently RM 6,000 for most sectors). Your payroll system must apply the ceiling correctly, or you'll be overpaying and creating reconciliation nightmares at year-end. Malaysia's probation period is typically 3 months, but this can be extended by contract to 6 months for executive roles. During probation, you must still contribute to EPF and SOCSO—the probation status does not exempt you from statutory deductions. A second trap: residential status. Non-citizens employed in Malaysia may face different tax treatment and EPF eligibility. Confirm this with the IRB before you start payroll. Singapore: NRIC is the keystone—but IRAS gets the real story Singapore's system is tighter and more automated than its neighbours. Your employee's NRIC (or FIN for foreigners) is the master ID. Singapore does not use a separate employment registration system like Indonesia or Malaysia; instead, the Inland Revenue Authority of Singapore (IRAS) treats the NRIC + employer registration as sufficient. The workflow: Collect the employee's NRIC or FIN. Verify the format: nine digits plus a check letter. File a monthly income tax return with IRAS using the NRIC. Singapore uses a centralized tax code system; IRAS sends you a tax code based on the employee's personal circumstances (e.g., married, children, dependents). You apply this code to calculate tax each month. Singapore does not have a mandatory provident fund like Malaysia or Indonesia. Instead, the Central Provident Fund (CPF) is mandatory for Singapore citizens and permanent residents. The employee contributes 20% of ordinary wages, and the employer contributes 17% (rates vary by age and are subject to a monthly ceiling of SGD 6,800). Non-resident