Thailand’s Social Security Old-Age Benefit: A Complete Guide for Former Expat Workers

日本語版: タイの老齢年金 完全ガイド（日本人向け）

If you worked in Thailand at any point in your career and contributed to social security, you are likely entitled to a one-time lump sum — or, in some cases, a monthly pension for life — from the Thai Social Security Office (SSO) once you turn 55. The benefit is yours to claim regardless of your nationality or where you live now. Many people, especially those who have already returned home, never collect it simply because they don’t know it exists.

A typical case: someone who worked in Thailand for 5 years on a normal expat salary is entitled to about 59,000 THB (~USD 1,650 / ~JPY 280,000). Someone who worked 10 years gets about 128,000 THB (~USD 3,550 / ~JPY 605,000). Even one year of work earns roughly 11,000 THB (~USD 305 / ~JPY 52,000). These are not trivial amounts, and nothing is paid out automatically — you have to file an application.

This guide walks you through the whole picture: eligibility, how much you can expect, how to file, and what to do if you’ve forgotten your Social Security number, lost touch with your former employer, or your passport has expired in the meantime.

A 30-second eligibility check

You are very likely entitled to the benefit if all three of the following are true:

1. You are 55 or older. There is no upper age limit.
2. You worked as an employee in Thailand and social security premiums were deducted from your salary. Look for “SSO” or “ประกันสังคม” on old payslips.
3. You are not currently enrolled in Thai social security. Either you have left the job, the country, or both.

Two important caveats:

• Directors and senior officers may not have been enrolled in social security at all (in Thailand, board-level officers are often classified differently from regular employees). If your old payslips show no SSO deduction, you were probably not enrolled and cannot claim.
• Contributions of 180 months (15 years) or more result in a monthly pension for life, not a one-time lump sum. The choice is automatic, based on your contribution length.

If you tick all three boxes, the next question is: how much?

How much could you receive?

For anyone who earned 15,000 THB/month or more (which covers essentially all expat workers — the contribution base was capped at this level through 2025), here is a quick reference table. The lump sum is calculated as roughly 900 THB × contribution months, plus accrued interest at the SSO’s published yearly rate.

(Note: starting in 2026, the contribution cap has been raised from 15,000 to 17,500 THB, with a further increase to 20,000 THB scheduled for 2029. This affects current and future contributions, not the contributions you made in past years. If you are claiming a benefit for past Thai work, your record is calculated on the cap that applied at the time you contributed — which for nearly all former expat workers was 15,000 THB.)

(USD and JPY figures use approximate exchange rates and round to two significant figures. Final amounts are determined by the SSO at the time of application.)

A few things to note about this table:

• Less than 12 months of contributions: You receive only your own share (450 THB × months). Your employer’s matching contribution is not included. This is a known weak point of the current system that the SSO is reportedly considering reforming.
• 12 months to 179 months: You receive your share plus the employer’s share (900 THB × months) plus accrued interest. This is the typical range for most former expat workers.
• 180 months or more: You receive a monthly pension for life, not a lump sum. See the detailed mechanics section below.
• COVID-19 contribution reductions were in effect during 2020–2022 (six reduction periods in total). Months covered by those reductions accrue less; if you worked in Thailand during that window, the table values are slightly optimistic.

How to apply

There are two practical paths, depending on where you live now.

Path A: You live in Thailand → file it yourself

If you are still in Thailand, the application is straightforward. You can walk into any SSO office in the country (it doesn’t have to be the one where you registered originally) and submit four documents:

1. Your passport (and a signed photocopy of the photo page)
2. A photocopy of your Thai bank book showing your name and account number, with your signature
3. The application form (สปส.2-01)
4. Your 13-digit Social Security number (printed on old payslips or your SSO card)

The counter staff will calculate the amount on the spot. The benefit is typically transferred to your Thai bank account within 1–2 months.

Two common gotchas at the counter:

• Your Thai bank account name must be in English (Roman script). Accounts registered only in Thai script are sometimes refused.
• If you contributed to multiple employers and were issued separate SSO numbers (which happens often — see Multiple employers), you need to bring all of the numbers.

If you’d like a step-by-step manual to walk through at the counter — with screenshots, sample form entries, and useful Thai phrases — I have published one for self-applicants on Gumroad: Thailand Pension Lump-Sum Application: A Step-by-Step Guide (USD 19, one-time purchase).

Path B: You live outside Thailand → I can file it for you

If you have already left Thailand, you don’t need to travel back. You can have me file the application on your behalf. The flow is:

1. You send me the required documents (passport copy, bank book copy, signed application form) by international registered mail or EMS
2. I file the application at the SSO in Bangkok
3. The benefit is transferred to your bank account, which can be in any country:
   – Thai bank account — 1–2 months
   – Japanese, US, UK, or any other country’s bank account — 3–6 months, via the Royal Thai Embassy in that country (extra verification step)

The service fee is a flat USD 198 (or JPY 35,000 / THB 7,000 depending on which currency is convenient for you), and the full amount is refunded if you turn out not to be eligible. See How I can help and the service fee section below for details.

What if you don’t know your Social Security number?

This is by far the most common reason people give up before they even try. It is also one of the easiest problems to solve.

The 13-digit Social Security number (starting with “6”) is printed on:

• Old Thai payslips
• Your old SSO card (if you ever received one)
• HR records at your former Thai employer

If none of those are available, the SSO itself still has your record. With a copy of your old passport’s photo page and the name of your former Thai employer (a Thai-language business card, employee ID, or even just the company’s tax ID is enough), I can look up your record at the SSO and confirm your number and expected benefit amount before you decide whether to file. See Looking up an unknown SSO number for the full procedure.

Frequently asked questions

Q. I’m well past 57 — is it too late to apply?

No. The Social Security Act sets a formal filing window (cited in various sources as one to two years after eligibility starts), but in practice the SSO accepts applications well past that — sometimes several years late — as long as you provide a reasonable explanation. I have helped clients file successfully many years after they became eligible.

Q. I closed my Thai bank account when I left. Can I still claim?

Yes. The benefit can be transferred to a bank account in any country, including your home country. It takes 3–6 months instead of 1–2, because the Royal Thai Embassy in your country has to verify your identity by mail before the transfer is released. No Thai-side account is required.

Q. My former Thai employer no longer exists (acquired, dissolved, or wound up).

Not a problem. The SSO holds your contribution record itself, independently of the employer. Even if the company has been completely dissolved, your benefit is preserved.

Q. I was a director / managing director. Am I eligible?

Possibly not. Directors and senior officers are often classified outside of social security in Thailand and never had premiums deducted in the first place. Check old payslips for an “SSO” or “ประกันสังคม” deduction line. If there was none, you were not enrolled and cannot claim.

Q. I worked at several companies over the years. Can I combine the periods?

Yes. Contribution months are summed across all employers, and gaps between jobs don’t reduce your entitlement. One application covers all of them — though if you ended up with multiple SSO numbers (a common pitfall for expats), you need all of them on hand. See Multiple employers.

Q. I continued contributing voluntarily after I quit (Section 39).

Two things to be aware of. (1) If you are still contributing voluntarily today, you must end your Section 39 enrollment before you can apply. (2) Voluntary contributions are calculated on a base of 4,800 THB/month (lower than the 15,000 THB cap for employees), which can slightly reduce the monthly amount for the lifetime pension. For lump sums, it simply means “a bit more is added on” — no downside.

Q. I was working in Thailand during the COVID years.

Premiums were reduced for six separate periods during 2020–2022, so the contributions credited to your account during those months are smaller than usual. The benefit table above is slightly optimistic for those months. The SSO calculates the exact figure from your record at the time of application.

Q. My passport has expired. Can I still apply?

You need a valid passport at the moment you file the application (the SSO uses it for identity verification). However, if your passport expires later, during the embassy verification step (a process that can take months), an alternative government-issued photo ID can usually be accepted. See Applying with an expired passport.

Q. Will I owe taxes on the benefit?

Tax treatment depends entirely on the country where you reside when you receive it. Please consult a local tax or legal advisor for your specific situation — this article does not cover tax aspects.

Behind the system: detailed mechanics

This section is optional reading for those who want to understand how the numbers in the table are derived.

How the lump sum is calculated

Thailand’s social security premium (under Section 33, the regular employee category) is 5% of monthly salary, with a contribution-base cap that was 15,000 THB through 2025 (raised to 17,500 THB in 2026, with further increases scheduled). For someone earning at the cap, the monthly premium is 750 THB, with the employer matching another 750 THB. Of those, 450 THB from each side (900 THB combined) goes to the old-age benefit fund.

• Under 12 months of contributions: Only your share (450 THB × months) is paid. The employer’s share is not included.
• 12 to 179 months: Both shares (900 THB × months) plus accrued interest are paid.
• 180 months or more: A monthly pension for life applies (see below).

The Thai term for the lump sum is เงินบำเหน็จ.

Annual interest rates

The SSO publishes the annual interest rate for old-age fund balances in the Royal Gazette each year. Recent rates:

The benefit table in this article uses an approximation of 3% compounded annually.

180 months and over: the lifetime pension

If you contributed for 180 months (15 years) or more, you receive a monthly pension for life instead of a lump sum. You cannot opt for the lump sum — the choice is made automatically by your contribution length. The Thai term is เงินบำนาญรายเดือน.

The monthly amount, for those earning 15,000 THB/month or more, is:

• 15 years (180 months): 3,000 THB/month
• 20 years (240 months): 4,125 THB/month
• 25 years (300 months): 5,250 THB/month

A 15-year contributor receiving from age 55 to 80 would collect a total of about 900,000 THB on personal contributions of 135,000 THB — a very generous benefit.

Lifetime pension recipients must file an annual proof of life in October — at any SSO office in Thailand, or at a Royal Thai Embassy/Consulate if you live abroad. Missing this step suspends the payments until the next visit.

Returning to work after pension starts

If a lifetime pension recipient returns to employment, they re-enter social security as an employee and the pension is suspended. It resumes upon leaving employment again (Social Security Act, Section 77/3).

Death of a pension recipient

If a lifetime pension recipient passes away within five years of starting payments, 10 months’ worth of the monthly pension is paid to surviving family (children → spouse → parents, in that priority). Deaths beyond the five-year mark fall outside this survivor benefit, but by that point the recipient has already collected at least 60 months of pension payments.

Reference links

• SSO official page on the old-age benefit (Thai only)
• The Thai Social Security Act, English translation by JETRO — old-age benefit is covered in Chapter 7, Section 76 onwards

More detail on specific situations

If your situation matches any of the following, see the dedicated article:

• Can I still claim if I no longer live in Thailand?
• How much will I actually get?
• What’s the minimum contribution period?
• DIY or hire help — which is right for me?
• What’s the eligible age?
• Can I apply with an expired passport?
• I don’t remember my SSO number — what can I do?
• I worked at several companies — can I combine the periods?

How I can help you with the application

If reading through this guide makes the process sound doable but tedious, I take care of the entire application for you. I tell you which documents to prepare, you mail them to me in Thailand by international registered mail (or EMS within Thailand), and I file the application at the Social Security Office on your behalf. For overseas recipients I follow up with the Royal Thai Embassy step as needed.

Service fee

The fee depends on the bank account you want to receive the benefit into:

This is a flat fee. There is no success fee and no additional charges, regardless of how much you receive. If it turns out that you are not eligible, I refund the full amount.

Number lookup service: If you don’t remember your SSO number, I can look it up for USD 60 (THB 2,000 / JPY 10,000) using your old passport copy and former employer name. (The lookup fee is for research time and is non-refundable.)

About the author

I’m Takehiko Nishizawa, originally from Saitama, Japan. I have been working for a Japanese company in Thailand for 25 years. During that time I have helped more than 40 former expat workers claim their social security old-age benefit from the Thai SSO. Every applicant who knew their Social Security number has successfully received their benefit. There have been no failed cases.

Get in touch

For questions or to start your application, please contact me through this form. I usually reply within 24 hours. You can also find me on X at @nisizawa.

This guide provides general information about Thailand’s social security old-age benefit and is based on the author’s hands-on experience helping former expat workers file their claims. It does not constitute legal, tax, or financial advice. Tax treatment of the benefit varies by your country of residence — please consult a local tax or legal advisor for your specific situation. Procedures and amounts at the Social Security Office may change without notice; the description here reflects practice as of 2026.