Payroll Services in Thailand

Payroll should translate approved employment terms and actual work records into correct pay, deductions, returns and payments. Start with the legal employer, employee identity, start date, salary or wage basis, payment cycle, benefits, work pattern and applicable policies.

Check the actual employment relationship and coverage. A director, contractor, foreign employee and ordinary employee may raise different questions. Do not use a contractor label or nationality as a shortcut around employment, tax or social-security analysis.

Agree who submits attendance, overtime, commissions, bonuses, allowances, leave, expenses and changes in pay or bank details. Set a cutoff that leaves time for review. Keep evidence of the manager’s approval and the effective date of every change.

Check joiners, leavers, unpaid leave and irregular payments carefully. Separate reimbursements from taxable remuneration only where the facts and applicable rules support it. A payment called an allowance is not automatically tax-free or outside the social-security wage definition.

Use independent confirmation for changes in bank beneficiary details. Restrict access to the master file and retain a change history so the reviewer can see why this month differs from the previous one.

Review ordinary pay, overtime, holiday work, paid leave and contractual benefits against the current law and agreed terms. Confirm the minimum wage for the actual location and covered sector; there is not one universal rate for every Thai workplace.

Update leave and payroll rules together when the law changes. The Labour Ministry’s December 2025 maternity changes include up to 120 days’ leave and employer-paid wages for up to 60 days, with further conditions and spouse-related leave. An old payroll template can understate obligations even when the base salary is correct.

Review lawful deductions and any consent or limit required. Do not deduct shortages, equipment costs, loans or penalties merely because a manager requests it or a broad contract clause exists.

Employment withholding is not ordinarily one flat percentage applied to every salary. Have payroll calculate under the applicable Revenue Department rules, using the employee’s remuneration and valid deduction or allowance information. Review bonuses, benefits, joiners, leavers and multiple-employer situations separately.

Obtain and retain the required employee declarations and evidence, and keep them current. Do not apply an allowance solely from an informal message or last year’s calculation. Confirm the treatment of foreign staff, overseas payroll and tax equalisation with a qualified adviser.

Reconcile the payroll withholding total to the relevant return, payment and employee records. The employer’s withholding duty and the employee’s own annual tax-return duty are distinct. A payslip showing a deduction is not proof that the employer remitted it.

For the ordinary Section 33 contribution framework, the wage base for 2026–2028 has a 17,500-baht monthly ceiling, replacing 15,000 baht. At the normal 5% employer and 5% employee rates, the maximum is 875 baht per side per month. Do not keep a 750-baht maximum from an older template.

Confirm coverage, the relevant wage components, minimum base, joining or leaving month and any temporary rate relief with SSO or the payroll adviser. The normal ceiling is not a promise that every person or exceptional month is calculated identically.

Record the employer’s share as an employer cost, separately from the employee deduction. Reconcile both portions to the contribution submission and official payment. Workmen’s Compensation Fund duties are a separate assessment rather than another deduction to copy automatically from an employee’s pay.

Keep the Employee Welfare Fund separate from Social Security. The government’s 14 October 2026 notice announces a planned deferral of collection to 1 January 2027 and says the related legal steps will follow. Check the final current rules, coverage, exemptions and payroll instructions before configuring deductions; do not use an older October 2026 start date.

Reconcile gross remuneration, tax, employee contributions, other lawful deductions, net pay and employer costs. Compare headcount and total pay with the prior period and explain material differences. Verify that each beneficiary and payment amount agrees with the approved payroll.

Separate preparation, approval and bank release where practical. Give the employee an understandable payslip and keep the authorised payroll register. If an error is discovered, calculate the correction, explain it and preserve the trail instead of silently changing the original record.

Use the current Revenue Department and SSO calendars for the exact form, period, filing method and payment deadline. Confirm any electronic extension or special relief rather than treating an online-filing date as permanent. Keep accepted submissions and official payment evidence for both authorities.

Payroll tax, social security, employer registration and employee movements are separate tasks. Put each on the calendar with an owner and reviewer. Do not assume paying a payroll provider or approving a bank batch completed every government filing.

Revenue Code Section 50 bis provides a withholding certificate timetable for employment income: within 15 February of the following year, or within one month of employment termination during the year, as applicable. Review the current form, employee details and amounts before issue.

Reconcile annual totals with the payroll and returns, and complete any required annual employer submission. For leavers, review earned wages, unused entitlements, notice, severance and other payments under the actual facts. The tax treatment of a termination payment may need separate analysis.

Coordinate social-security movements and any immigration or work-permission consequences for foreign staff. A final salary payment alone is not a complete employee exit process.

Payroll contains identity, bank, salary, tax and often sensitive personal information. Give access only to people who need it and use secure transfer and storage. Review the payroll provider’s data-processing role, security, subcontractors, overseas transfers and incident process.

Set a retention schedule based on employment, tax, accounting and other legal requirements. Preserve records longer when a dispute or investigation requires it. Ensure the business can retrieve calculations, approved inputs, payslips, filings and receipts after a provider change.