CARE Formula ExplainerPrepared by the Actuarial Team, Social Security Office · Last updated 4 August 2026
Choose how to readShowing the essential points
● Explained by the CARE formula development team

CARE: a new pension formula based on wages across your working life

Let's understand CARE together—because your pension matters.

Workers at different life stages, from entering work to retirement
Every part of a working life matters
How CARE works
Monthly pension=Pension rate×Pensionable wage
Pension rate20% + 0.125%

for every month beyond 180 contribution months

Pensionable wageAverage of every contributory wage

revalued to the wage level near the entitlement date

Contribute more, receive more · Contribute longer, gain more

How the old formula worksWhat changes under CARE?
Pension rate20% + 1.5% per complete year

The rate rises only after each full 12 months beyond 180. Remaining months are disregarded for the rate.

Example: 191 months = 20% · 192 months = 21.5%
Pensionable wageAverage of the final 60 contributory wages

Earlier wages are excluded from the pensionable-wage calculation, leaving the result highly dependent on late-career wages.

Key difference: the old formula can create “late-career risk”

Earlier months still count toward contribution duration, but their wages are not included in the wage base. CARE raises the rate by 0.125% each additional month and revalues every contributory wage.

Video 01 · Start with the overview

Meet CARE in a short video

Begin with a concise introduction from the Social Security Office’s official YouTube channel before exploring the details below. The video is currently in Thai.

Watch on YouTube
CARE teaser thumbnail01
01
Start with your concernsAnswering the question Section 33 members ask most
How CARE addresses an old-formula problem for people who contributed under Section 39

Earlier wages should not be forgotten

The old formula uses only the final 60 contributory wages. A Section 39 base of THB 4,800 late in the record can therefore pull the pension down while earlier wages are left out of the pensionable-wage base. CARE revalues and includes every contributory wage.

The question we hear mostDoes solving this problem reduce Section 33 pensions?
Concern we have heard

“CARE is only for Section 39 and uses Section 33 pensions to fund the increase.”

This is an understandable concern because the results for the two groups are often compared. CARE does not take rights from one group and divide them among another.

How CARE is actually calculated

Everyone follows the same point rule, and earlier wages are revalued.

CARE compares each person's wage with the system wage level in each period, helping preserve the value of earlier wages without transferring rights between Sections 33 and 39.

See the reasoning, revaluation and Section 33/39 exampleShort formula · point example · important nuance
Point for each monthContributory wage ÷ Reference Earnings (RE) assigned to that month
Conversion at entitlementAverage point × 60-month average Section 33 RE
When contributingTHB 10,000 wage ÷ THB 10,000 RE= 1.00 point
Revalue the point
When pension entitlement begins1.00 × THB 20,000 average RE= THB 20,000 pensionable wage

This is only a mechanism example. The actual pensionable wage uses the average of every contribution-month point and is subject to the 60-month average wage ceiling before entitlement.

No rights are transferred between sections

Each person is calculated from that person’s own contribution record.

Why Section 39 cases may improve visibly

Under the old formula, a THB 4,800 base near retirement may pull down the final 60-month average.

History matters—not the section number

Section 33 members with lower or interrupted late-career wages may also benefit from using wages across the full contribution history.

A direct answer: 100% CARE may not be higher than the old formula for every wage history. But CARE does not use Section 33 rights to increase Section 39 pensions, and the transition rules protect contributions already made.

Results depend on each person's wage history: during the transition, the blended formula protects accrued rights. After the transition, 100% CARE may be higher or lower than the old formula depending on the wage history.

02
Understand the CARE conceptBegin with the overview, then open only the explanations you want to explore
CARE stands for

Career Average Revalued Earnings

A pension calculation based on average wages across a working life, with wages from different periods revalued to a level comparable with wages near the entitlement date.

The one-minute concept

Contribute more, receive more. Contribute longer, gain more.

CARE uses every contributory wage and places wages from different periods on a comparable basis before calculating the pensionable wage.

01

More contributions, more pension

A higher wage relative to the RE assigned to that month earns more pension points.

02

Longer contributions, higher rate

After 180 months, the pension rate rises by 0.125% for every additional month.

03

Every month matters

Every contributory wage is included; the formula does not look only at wages near retirement.

Why the pension formula is being revised

Close the gapBuild fairnessKeep pace with change

People in different forms of work moving towards pension security
Jobs can changeEvery contribution month still moves with youCARE counts contribution periods across a changing career and different forms of work.
01

Close the gap

Reduce employment-related pension risk and the effect of wages raised only near retirement
02

Build fairness

Apply one CARE rule, with protection for accrued rights during transition
03

Keep pace with change

Reflect rising wage ceilings and diverse work patterns
Video 02 · CARE principles in brief

CARE formula introduction with infographic

Review the formula, pension points and revaluation at a glance before choosing the detailed explanation or calculator. The video is currently in Thai.

Watch on YouTube
Thumbnail for the CARE formula infographic video02
You have read the essentials

Choose what to explore next

Open the full version for the point calculation, transition rules, examples and personal calculator.

03
Understand the calculationMain formula · wage revaluation · pension points
How CARE works

Start with the main formula, then see how wages are revalued

The pension combines contribution duration with a revalued wage base drawn from the complete contribution history.

Video 02 · Before the detailed calculation

CARE formula introduction with infographic

See the formula, pension points and revaluation at a glance before working through the calculation below. The video is currently in Thai.

Watch on YouTube
CARE formula infographic video thumbnail02
Monthly pension=
Pension rate20% + 0.125% for every month beyond 180
×
Pensionable wageAverage of every contributory wage, revalued near entitlement
1. Pension rate20% + [months beyond 180 × 0.125%]

Starts at 20% after 180 contribution months and rises after every additional month.

2. Pensionable wageAverage of all contributory wages after revaluation

Revaluation lets wages earned in different periods be compared appropriately.

Revaluation in four steps

Convert each month’s wage into a point, then convert the average point back into a current wage level

Follow the sequence: identify RE → calculate a monthly point → average all points → convert to the pensionable wage.

Contribution months accumulating as protected pension points
A visual reminderEvery contribution month earns a point that is revalued at entitlementThe coins represent pension points for explanation only; they are not immediate cash payments.
01Identify RE02Calculate points03Average points04Convert to wage
01
REFERENCE EARNINGS

Identify RE for the month

Monthly RE= average Section 33 wage statistic from two months earlier

RE is the reference wage assigned to each contribution month to compare a member’s wage with the system.

The two-month lag applies the same rule consistently and reduces the effect of delayed wage reporting.
02
MONTHLY POINT

Calculate each month’s point

Contributory wageRE assigned to that month
1.00 at average> 1 above average< 1 below average

A higher wage relative to RE earns more points under the same monthly rule.

03
AVERAGE POINT

Average points across all contributions

Total points from all monthsNumber of contribution months

All contribution-month points are added and divided by the number of those months.

This produces the member’s average pension point.
04
PENSIONABLE WAGE

Convert the point back into a wage

Pensionable wage= average point × average RE over the final 60 months before entitlement

The accumulated point is converted to the wage level near the date pension entitlement begins.

Cap: the result cannot exceed the average statutory wage ceiling over the same final 60 months.

This cap is not a new restriction introduced by CARE.

Under the old formula, wages over the final 60 months are averaged, with each month's wage limited by the statutory ceiling applicable in that month. If the ceiling changes during the period, the highest possible average is the average of all 60 monthly ceilings—not simply the ceiling in the final month.

CARE follows the same principle. After pension points are converted back into a pensionable wage, the result cannot exceed the average statutory ceiling over the 60 months before entitlement.

Example · continuous contributions through July 2026
53 monthsTHB 15,000 monthly ceiling
7 monthsTHB 17,500 monthly ceiling
[(53 × 15,000) + (7 × 17,500)] ÷ 60= THB 15,291.67

The maximum average pensionable wage in this example is therefore approximately THB 15,292, not THB 17,500 for all 60 months. This principle already exists under the old formula and continues under CARE so the maximum reflects the ceilings actually applicable in each period.

RE sources and start-of-system exceptions

General rule: each month's RE refers to the average Section 33 wage statistic from two months earlier.

Start-up exceptions: a contributing member uses a THB 1,650 wage and RE in December 1998, producing 1 point. February 1999 uses the average RE of January and March 1999 to avoid the effect of that exception.

Data used: figures through July 2026 use system data; later figures are site projections. See “Assumptions to know” in the calculator for details.

See examples and further explanationPoint example · one-point value · 60-month average · wage ceiling
Monthly-point exampleTHB 12,000 wage ÷ THB 10,000 RE = 1.20 points

If another month has a THB 8,000 wage and THB 10,000 RE, it earns 0.80 points. All contribution-month points are then averaged.

How much pensionable wage does one point represent?

1 point = average RE over the final 60 months before entitlement

People becoming entitled at the same time use the same conversion value, even if one stopped contributing before age 55.

Why average 60 months?

To reduce volatility and maintain a link with the old structure

The average smooths monthly wage data. It does not mean that everyone receives the same pension.

New maximum pensionable wage

Average wage ceilings over the final 60 months

The maximum rises gradually as the Section 33 wage ceiling is phased up.

1 Jan 2026THB 17,5001 Jan 2029THB 20,0001 Jan 2032THB 23,000
Detailed wage and contribution-month rules

Only months with wages recognised under the Social Security Act are counted, including Section 33, Section 39 and assessed contribution debt. Months without reported wages are excluded from the average point.

If a month includes multiple employers or both Section 33 and Section 39 contributions, wages are combined, capped at the applicable ceiling, and counted as one contribution month.

The value of one point and the maximum pensionable wage are determined at the entitlement date, not the claim-filing date. The monthly one-point value cannot be lower than the previous month’s value.

04
Protecting rights during the transitionCARE is phased in while accrued rights remain protected
Transition to CARE

Increase rights while protecting contributions already made

The transition covers people already receiving pensions before CARE and people first becoming entitled during the five-year transition. The higher protected calculation is used.

Website assumptionCARE is assumed to take effect in September 2027

All pre-CARE, five-year transition and 100% CARE periods on this site are measured from that month for explanation and projection only.

Five-stage CARE transition with a shield protecting accrued rights
A gradual transitionPre-CARE rights remain protected while CARE rises by 20 percentage points each yearThe coins and documents are explanatory symbols, not individual accounts.
Before the five-year transition

People already receiving pensions when CARE takes effect

The current old-formula pension is compared with a recalculation using 100% CARE, and the higher amount is used.

Current pension100% old formula
compare with
Recalculated100% CARE
Pension after comparisonUse the higher amount

Protection: if CARE is higher, the pension rises; if the existing pension is higher, the existing amount remains. A pension already being paid is not reduced.

Five-year transition

People first becoming entitled after CARE takes effect

CARE is calculated alongside a blended formula that protects the pre-CARE weight, and the higher amount is selected.

Blended pension(pre-CARE share × old-formula pension)
+ (post-CARE share × CARE pension)
then choose
Pension payableHigher of CARE and the blended formula
Protection across five years

CARE rises by 20 percentage points each year while the pre-CARE portion remains protected

Old formula · pre-CARE portionCARE · post-CARE portion
Entitlement year 1Sep 2027–Aug 2028
Protected pre-CARE portion: 60 of 60 months
20%20%20%20%20%
100% old+0% CARE
Entitlement year 2Sep 2028–Aug 2029
Protected pre-CARE portion: 48 of 60 months
20%20%20%20%20%
80% old+20% CARE
Entitlement year 3Sep 2029–Aug 2030
Protected pre-CARE portion: 36 of 60 months
20%20%20%20%20%
60% old+40% CARE
Entitlement year 4Sep 2030–Aug 2031
Protected pre-CARE portion: 24 of 60 months
20%20%20%20%20%
40% old+60% CARE
Entitlement year 5Sep 2031–Aug 2032
Protected pre-CARE portion: 12 of 60 months
20%20%20%20%20%
20% old+80% CARE
From Sep 2032 · after transition100% CARE

Entitlement year 2 example: blended pension = 80% × old-formula pension + 20% × CARE pension. The weights apply to pension amounts, not wages. The result is then compared with CARE, and the higher amount is selected.

What does “compensation for the difference” mean?

“Blended formula” and “compensation for the difference” are two ways of explaining the same calculation and produce the same amount.

Example: entitlement in transition year 2
If CARE is higher than the old formulaUse 100% CARE
If the old formula is higher than CAREUse 80% old formula + 20% CARE
(80% × old formula) + (20% × CARE)=CARE + [80% × (old formula − CARE)]

The expression on the right is the “compensation for the difference” explanation. The blended formula shows the underlying rule: pre-CARE contribution periods remain proportionately protected during the transition.

Final pension payable
Once selected, this is the pension paid every month for life

The five-year transition determines the calculation method for people first becoming entitled in each period; it is not a five-year payment duration. After CARE and the blended formula are compared, the higher amount becomes the monthly pension payable for life.

05
Try it with your informationEnter your record, see the career pattern and compare projections
Calculator using system data and CARE model assumptions

Enter your record, choose an entitlement date, and compare three scenarios

Enter contributory wages or member contributions paid through July 2026. Choose a past or future entitlement month; future dates project wages under three assumptions.

Illustrative estimates only—not entitlement certification

Results depend on the wages entered, future-wage assumptions, completeness of the contribution record and official system-average wages. They explain and compare the formula but cannot certify legal entitlement.

People reviewing pension-calculator results on a tablet
Test it with confidenceYour calculation data stays on this deviceWage and contribution data is not sent from this device.
Step 1 · Choose the first expected pension month

When do you expect to start receiving a pension?

Choose the first month you expect to receive a pension so the website can project wages and pension rights through that month.

Not sure what to enter?

In general, pension entitlement requires insured status to have ended, age 55 or older, and at least 180 old-age contribution months. Choose the first month you expect pension entitlement to begin. If you already receive a pension, choose the actual first entitlement month.

Calculating through Jul 2031
Step 2 · Enter contribution data

Enter contributory wages

Choose the method that is easiest for you
Enter wages directly, or load an example and edit each month to match your history. A blank field or zero means no contribution for that month.

My data — starting blank
Choose a quick exampleView one example at a time, then load it when you want to replace the wages entered
Regular wage growthCurrent example: wages rise steadily
Summary of wages used in the calculation

Wage pattern across the working life

Monthly wages after applying the ceiling for each month. The chart updates immediately when the entries change.

Wage after applying the ceiling
Statutory wage ceiling
A drop to zero indicates a month without a contribution
Contribution months0 months
Minimum contributory wageTHB 0
Latest wageTHB 0
Maximum wageTHB 0
View the website's future-wage assumptionsCompare three wage paths through Jul 2031

The three dotted lines are calculation assumptions, not forecasts of actual future wages.

Choose how to enter your data
Enter a wage first, then select “Fill year”.
Calculated only on this device; wage or contribution data is not sent from this device.
Observed data and projection periods

Accrued rights at August 2026 use entered wages and RE through July 2026. For a past entitlement date, wages from that date onward are excluded. For a future date, projected wages and projected RE begin in August 2026 and continue to the month before entitlement. Projections may be selected through December 2057.

Step 3 · Review rights from contributions to date

Rights accrued to date

This is not the pension payable at entitlement.

Updates immediately
Fewer than 180 contribution monthsOld-age lump sum accrued at August 2026THB 0estimated one-off payment

Uses contributions through July 2026, including old-age contributions from both sides plus accumulated returns.

Old-age contributions
THB 0
Accumulated return
THB 0
Estimated lump sum
THB 0
See the result at entitlement
Step 4 · Review the projection at Jul 2031

59 additional contribution months

Three future-wage assumptions are compared, and the higher of CARE and the blended formula is selected under the transition rule.

Future results use this website's RE and wage-ceiling assumptions

Used for projection only

The website compares three future-wage patterns and applies RE and wage-ceiling assumptions through the selected date. RE from August 2026 and wage ceilings after 2032 are website assumptions, not official data or announcements. See “Before using the projection” below for all rates applied.

Scenario 1 · Wage falls by 50%

No known wage has been entered, so the projected wage is zero.

0 contribution months: old-age lump sumTHB 0Estimated one-off payment including both sides and returns
Old-age contributions
THB 0
Accumulated return
THB 0
Estimated lump sum
THB 0
Details and assumptions

Old-age contributions THB 0 · accumulated return THB 0

Each contribution receives the full return for the following month, when it is paid. Contributions through July 2026 therefore use official return factors through August 2026. Future months use a 5% annual return assumption compounded monthly.

Scenario 2 · Wage equals the latest contributory wage

No known wage has been entered, so the projected wage is zero.

0 contribution months: old-age lump sumTHB 0Estimated one-off payment including both sides and returns
Old-age contributions
THB 0
Accumulated return
THB 0
Estimated lump sum
THB 0
Details and assumptions

Old-age contributions THB 0 · accumulated return THB 0

Each contribution receives the full return for the following month, when it is paid. Contributions through July 2026 therefore use official return factors through August 2026. Future months use a 5% annual return assumption compounded monthly.

Scenario 3 · Wage equals the statutory ceiling

From Aug 2026 to the month before entitlement, the wage follows the applicable ceilings: THB 17,500, THB 20,000 and THB 23,000.

59 contribution months: old-age lump sumTHB 74,950Estimated one-off payment including both sides and returns
Old-age contributions
THB 66,450
Accumulated return
THB 8,500
Estimated lump sum
THB 74,950
Details and assumptions

Old-age contributions THB 66,450 · accumulated return THB 8,500

Each contribution receives the full return for the following month, when it is paid. Contributions through July 2026 therefore use official return factors through August 2026. Future months use a 5% annual return assumption compounded monthly.

Before using this estimate

The site assumes CARE starts in September 2027 and measures the five-year transition from that month. This is not an official schedule.

RE: values through July 2026 are based on Social Security Office system data. From August 2026 through December 2057, each month is projected from the previous month at 1.041/12, equivalent to 4% annual growth.

Wage ceiling: the site uses THB 17,500 from January 2026, THB 20,000 from January 2029 and THB 23,000 from January 2032. It then assumes 4% increases each January from 2035 through 2057 to reduce long-range projection error. Those post-2032 increases are model assumptions, not statutory ceilings or official forecasts.

Lump-sum return: each contribution is paid in the following month and receives that payment month's full return. Contributions through July 2026 therefore use official SSO monthly factors through August 2026. From 2009 onward, principal and accumulated returns compound together; the earlier legal method kept prior accumulated returns separate. Future months use a 5% annual return assumption compounded monthly, consistent with the long-term old-age-benefit assumption and the pension-liability discount rate used in the financial statements. Actual future declared returns may differ.

Money values: projected results are nominal baht at the wage level of the entitlement year, not amounts discounted to today's purchasing power, and cannot certify an actual entitlement.

Special cases and additional conditionsSpecific questions about entitlement, returning to insured status, and death
Entitlement arose before CARE, but the claim is filed later

Months of entitlement before CARE takes effect are calculated and paid under the old formula. From the month CARE takes effect, the existing pension is compared with the amount recalculated under 100% CARE, and the higher amount applies. The first payment may therefore include pension arrears covering two periods, based on the member’s actual entitlement months.

Becoming an insured member again after receiving a pension

In the normal case, when insured status later ends and the person becomes entitled to receive a pension again, the pension rate is increased for the additional contribution months and the pensionable wage is recalculated. The higher of the newly calculated wage base and the wage base used previously is selected, then multiplied by the new pension rate. If the first pension used the blended formula, an equivalent previous wage base is calculated by dividing the pension selected at first entitlement by the CARE pension rate at that time, and this equivalent base is compared with the newly calculated wage base.

Death before or after pension payments begin

If a pension recipient dies within 60 months from the month pension entitlement begins, the heirs or other persons entitled under the law receive a lump-sum advance payment for the months remaining until 60 months are completed. If a member dies before pension payments begin, or becomes entitled to an old-age benefit with fewer than 180 contribution months, an old-age lump sum is paid instead. It comprises the old-age contributions paid by both the insured person and the employer, together with the return announced by the Social Security Office. In a month without a temporary contribution-rate reduction, the old-age allocation is 3% of contributory wages from the insured person and 3% from the employer.

Step 5 · Review wage revaluation

How each year’s wages accumulate pension points

Points are calculated monthly, then grouped by year for readability. The table responds immediately to wage entries above.

The RE values shown are calculated from official Social Security Office wage statistics

Values through July 2026 were calculated and checked using SSO system data and may be used as a reference for estimates on this website. The formally prescribed RE values are expected to be consistent with or close to this table. When CARE takes effect, the SSO will rerun and verify the calculation under the prescribed rules.

Every contribution monthContributory wage ÷ same-month RE = monthly point
Through the selected yearCumulative points ÷ cumulative months = average point
Convert to a wageAverage point × one-point value near entitlement

No contribution month in this year.

Average contributory wageContribution months only
Average REBased on system data through July 2026
Average point this yearNo points yet
Points accumulated through this year0Average 0 across 0 months
Table 1 · Monthly detail · 2026
MonthWage enteredContributory wageREMonthly point
JanTHB 12,353
FebTHB 12,407
MarTHB 13,348
AprTHB 13,309
MayTHB 13,319
JunTHB 13,367
JulTHB 13,406
Total points for year0
Point conversion example at July 2026

0 points ÷ 0 months = 0 average points

0 × one-point value THB 12,030 = THB 0 before the cap

Pensionable wage after the capTHB 0Not above the 60-month average ceiling of THB 15,250
Table 2 · Cumulative points by yearSelect a year in the table to update the monthly detail above
Points from entered wages and RE based on system data through July 2026
YearMonthsAverage contributory wageAverage REAnnual pointsCumulative pointsAverage points
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

How to read this: monthly points accumulate, but they must be divided by contribution months to obtain the average point before conversion to a pensionable wage. Annual grouping is for explanation only; the formula remains monthly.

Video 03 · In-depth discussion

Take your understanding of CARE further

After reading the principles, examples and calculation, watch a deeper discussion of the formula’s rationale and key issues. The video is currently in Thai.

Watch on YouTube
In-depth CARE discussion video thumbnail03
06
Questions we hear from insured membersChoose only the concerns or checks that matter to you
Frequently asked questions

Questions about CARE

What is CARE?

CARE stands for Career Average Revalued Earnings. It calculates a pension from contributory wages across a person's working life, revaluing past wages to a level comparable with wages near the entitlement date rather than considering only wages near retirement.

Revaluation is carried out through pension points.

  1. Compare each month's contributory wage with the RE assigned to that month, using system data from two months earlier, to calculate that month's point.
  2. Average the points from every contributory month across the working life.
  3. Convert the average point back into a pensionable wage near the entitlement date using the system's average wage statistic over the preceding 60 months.

This allows each wage to be assessed against the wage level of its own period. Earlier contributory wages are not forgotten, and every contributory month matters to the pension calculation.

See the formula and revaluation method
Does CARE raise pensions for Section 39 members by reducing pensions for Section 33 members?

No. CARE does not transfer pension rights or pension amounts from Section 33 members to Section 39 members. The same point rule applies to every month of contributory wages, while past wages are revalued using Section 33 wage statistics. Many Section 39 cases improve because the old formula can allow the THB 4,800 wage base in the final years to pull down the 60-month average. Outcomes for each Section 33 member still depend on that person’s complete wage and contribution history.

When does old-age pension entitlement arise, and when does payment begin?

A member must have reached age 55 and ceased to be an insured person. Entitlement begins in the month following the month in which both conditions have been met. A member with at least 180 months of old-age contributions receives a monthly pension; a member with fewer than 180 months receives an old-age lump sum.

How is the old-age lump sum calculated with fewer than 180 contribution months?

For 12–179 contribution months, the calculation is unchanged: old-age contributions from both the member and employer plus accumulated returns. The improvement applies to 1–11 months. Previously only the member-side contribution was paid; the revised formula also includes the employer-side contribution and returns. In normal months the combined old-age allocation is 6% of contributory wages, or 6% of the THB 4,800 base for Section 39. Months with a temporary contribution-rate reduction use the amount actually allocated, plus any additional rate officially prescribed for calculating the lump-sum benefit in that period.

Does a temporary contribution-rate reduction reduce the pension?

No. A pension is calculated from the contributory wage base and the number of contribution months, not from the actual amount of contributions paid. If a contribution rate is temporarily reduced while the wage base and contribution months remain recorded as usual, the pension is not reduced because of that rate reduction.

What should I do if past wage records are missing or incomplete?

You may ask the Social Security Office to investigate. Missing information may result from an employer reporting incomplete wages or from another cause. The SSO will follow its fact-finding process and may request supporting documents or evidence so that the record can be corrected and the insured person receives the full benefit supported by the facts.

When will CARE take effect?

The exact effective date is not yet known. It depends on the legal process and on completing the database and IT improvements needed to calculate every member’s pension accurately. For explanation and projection purposes, this website assumes that CARE takes effect in September 2027. This is a website assumption, not an officially announced implementation date.

Who developed the CARE formula?

The Social Security Office’s actuarial team developed the detailed calculation, adapting CARE principles used in several countries, particularly OECD members. The proposal was considered by the ad hoc subcommittee appointed by the Social Security Board, refined in response to stakeholders, approved by the Social Security Board, and endorsed by the Cabinet on 14 July 2026.

Which countries use CARE or comparable pension-point principles?

Countries use different names and parameters, but several systems consider earnings across many years or a full career and revalue earlier earnings. Examples include Austria, Belgium, Canada, Finland, Japan and Korea. Pension-point systems are used in Germany, Estonia, Lithuania and the Slovak Republic, as well as France’s mandatory supplementary pension. These are not identical to Thailand’s proposed formula, but they share the principle of valuing contribution records across time rather than only final earnings.

What is a pension point?

Each month’s point is calculated by dividing the member’s contributory wage by the Reference Earnings (RE) assigned to that month. RE uses the average wage statistic for contributing Section 33 members from two months earlier to reduce the effect of delayed reporting. A point of 1.00 means the member’s wage equals that month’s RE. Points from every contributory month are averaged, then multiplied at entitlement by average RE over the preceding 60 months to convert them back into a pensionable wage. This revalues earlier contributory wages to a wage level near the entitlement date.

Why do December 1998 and February 1999 use different RE rules?

Normally, each month’s RE uses the average Section 33 wage statistic from two months earlier. December 1998 was the first old-age contribution month and had two contribution records in the same month, so a contributing member uses a THB 1,650 wage and THB 1,650 RE, producing exactly 1 point. Using that exceptional December value directly for February 1999 would distort the result, so February uses the average of January and March 1999 RE instead.

Can the historical RE values on this website be used as a reference?

Yes. RE values through July 2026 were calculated and checked using Social Security Office system data and may be used as a reference for estimates on this website. The formally prescribed RE values are expected to be consistent with or close to the values shown here. When CARE takes effect, the SSO will rerun and verify the calculation under the prescribed rules, and the formally published values will govern.

How does CARE affect the financial position of the Social Security Fund?

Over the long term, total pension expenditure under CARE is expected to be close to the level under the old formula, but this does not mean expenditure is identical in every year. Costs rise during transition because accrued rights are protected. The Fund’s position also depends on other factors, and the Social Security Board has appointed a subcommittee to develop a long-term Funding Strategy.

I already receive a pension before CARE starts. Will it be increased?

If you already receive a pension before CARE takes effect, a CARE amount will be calculated and compared with your existing pension. If CARE is higher, future pension instalments will be increased under the applicable rules, without retrospective adjustment. If CARE is not higher, your existing pension continues without reduction.