Thailand Social Security Pension Reform: What the 2026 CARE Formula Means

Two Changes Driving the Thailand Social Security Pension Reform

Thailand runs a mandatory Social Security Fund (SSF) that covers most private-sector employees. Both employers and employees contribute a percentage of monthly wages, and the fund pays sickness, maternity, disability, unemployment, child allowance, and old-age benefits in return. The old-age benefit sits at the centre of the current reform debate.

Two distinct measures make up the 2026 story, and they carry very different legal weight:

• The contribution ceiling increase is binding law. It took effect on 1 January 2026 and directly raises the maximum contribution employers and employees pay.
• The CARE pension formula remains a draft. The Cabinet approved it in principle in July 2026, but it must clear further legal review before it can apply.

Because these two measures are at different stages, employers should treat them differently. The ceiling change demands action today. The pension formula demands attention and planning, but not yet operational change.

The Higher Contribution Ceiling Is Already in Force

For more than three decades, the SSF calculated contributions on a wage ceiling of THB 15,000 per month. A ministerial regulation published in the Royal Gazette on 12 December 2025 changed that. From 1 January 2026, the wage ceiling rose to THB 17,500 per month, and further increases are scheduled in phases.

The ceiling determines the maximum salary on which the standard 5% contribution rate applies. As a result, the maximum monthly contribution from each side rose from THB 750 to THB 875. Because both the employer and the employee contribute, the combined maximum climbed from THB 1,500 to THB 1,750 per employee, per month.

The higher ceiling affects every employee who earns above THB 15,000 per month, which includes most professional and managerial staff. Consequently, companies with higher-paid workforces face a real, immediate increase in employment costs. Higher contributions also flow into larger future pension entitlements, so the change is not purely a cost. Even so, employers should update payroll systems, revise budgets, and confirm that outsourced payroll providers have applied the new ceiling correctly. The change was introduced by ministerial regulation under the Social Security Act and is administered by the Social Security Office.

The CARE Pension Formula: What the Draft Proposes

The second part of the Thailand social security pension reform targets how the SSF calculates old-age pensions. On 14 July 2026, the Cabinet approved in principle a draft ministerial regulation that would replace the current calculation method with a Career Average Revalued Earnings (CARE) model. The reform aims to make pensions fairer, reflect a worker’s full contribution history, and strengthen the long-term financial sustainability of the fund. The Ministry of Labour is driving this stage of the Thailand social security pension reform.

How the Current Formula Works

Today, the SSF bases the old-age pension on the insured person’s average wage over the final 60 months, that is, the last five years, before retirement. This approach favours workers whose salaries peak late in their careers. However, it can disadvantage anyone whose income falls in the final years, for example because of a role change, reduced hours, or a move to lighter work before retirement.

How the CARE Formula Would Work

Under the CARE model, the calculation would look at wages across the worker’s entire contribution history rather than only the last five years. Each past wage would be revalued to present-day terms using an economic index, and the pension would then draw on that revalued lifetime average. In principle, this produces a benefit that tracks lifetime contributions more accurately and treats late-career income changes more evenly.

Who Gains and Who Could Receive Less

Any change to a pension formula creates winners and losers, and the CARE proposal is no exception. Workers whose wages stayed steady or rose gradually across a long career could benefit, because a revalued lifetime average captures those consistent contributions. Likewise, employees whose income dipped in their final working years may receive a fairer result than the current last-five-years method allows.

On the other hand, some workers whose salaries rose sharply only near retirement could receive a smaller pension under a lifetime average. To address this concern, the government has proposed a five-year transition period. During that window, anyone who would receive a lower pension under CARE than under the existing formula would receive compensation covering part of the difference. This transition is designed to soften the impact and give workers time to adjust their retirement planning.

What the Reform Means for Employers

Foreign-owned companies and multinational employers should treat the two measures as separate compliance tasks. The contribution ceiling requires immediate operational steps, alongside other payroll duties such as personal income tax withholding. The pension formula requires monitoring and clear communication with staff. In practical terms, employers should:

• Update payroll immediately. Apply the THB 17,500 ceiling to all affected employees and confirm that the maximum contribution now reflects THB 875 per side.
• Revise budgets. Factor in higher current contributions and the scheduled increases to THB 20,000 in 2029 and THB 23,000 in 2032.
• Audit payroll providers. Verify that outsourced or software-based payroll has implemented the new ceiling correctly, and correct any under-deductions promptly.
• Prepare employee communications. Explain the higher deductions and, when the CARE formula advances, help staff understand how their pensions may change.
• Monitor the legislative process. Track the Council of State review so that any change to the pension formula can be reflected in HR policy and retirement guidance.

What the Reform Means for Expats and Foreign Employees

Foreign nationals employed under a Thai contract and work permit generally contribute to the SSF on the same basis as Thai employees. As a result, the higher ceiling raises their deductions too, and the pension reform may affect their eventual benefits. The SSF is also separate from the Employee Welfare Fund, so staff may encounter both. Several points matter for internationally mobile staff.

Old-age benefits under the SSF depend on the length of contribution. An insured person who has contributed for at least 180 months (15 years) and reached age 55, and whose insured status has ended, may qualify for a monthly old-age pension. An insured person with fewer than 180 months of contributions typically receives a one-time old-age gratuity, or lump sum, instead of a monthly pension. Foreign employees who leave Thailand before reaching the pension threshold should therefore understand what they can claim and when.

Because rules on eligibility, timing, and claims after leaving Thailand can be complex, expatriate employees and their employers should seek specific advice. This is particularly important for senior hires whose wages sit well above the ceiling and for staff moving between Thailand and other jurisdictions during their careers.

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