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The CGA civil-service pension: how it is calculated

Portuguese public workers who pay into the Caixa Geral de Aposentações have their pension computed under special rules: those enrolled by 31 August 1993 add the P1 part (service until 2005, under the old formula) and the P2 part (service since 2006, under the general-regime rules), while those enrolled from September 1993 to the end of 2005 follow the general regime entirely. See the formula, the 2026 values and a full example.

6 min readReviewed By Thorben Rasmus IdelReviewed by Nahar Geva

TL;DR

The CGA closed to new members at the end of 2005. Those enrolled by 31 August 1993 receive P1 + P2: P1 is 80% of the relevant pay until 2005 (capped at 12 IAS, €6,445.56 in 2026) times the years of service until 2005 divided by 40; P2 applies the general-regime rules (a 2% to 2.3% annual rate in brackets) to the service since 2006, counting only the years needed to complete 40. Those enrolled from 01-09-1993 to 31-12-2005 have the pension computed entirely under the general regime. In 2026, ordinary retirement requires age 66 years and 9 months and 15 years of service; retiring early cuts 0.5% per month plus the sustainability factor (17.63% in 2026).

What the CGA is and who still retires through it

The Caixa Geral de Aposentações (CGA) is the pension scheme of Portuguese public workers enrolled by 31 December 2005. On that date it closed to new members: anyone who joined the State from 2006 pays into Social Security and gets the general-regime pension2. For those who stayed in the CGA, the enrollment date determines the pension formula, set by Law 60/2005 and detailed in the CGA's official calculation note1:

Enrollment date in the CGAHow the pension is computed
By 31-08-1993P1 (service until 2005) + P2 (service since 2006)
From 01-09-1993 to 31-12-2005Entirely under the general-regime rules
From 01-01-2006No CGA enrollment: Social Security

You can apply the formula to your case in the CGA pension calculator.

The 2026 conditions: age and guarantee period

Ordinary (non-early) retirement requires, in 2026, age 66 years and 9 months and at least 15 years of service, the guarantee period2. The normal age matches the general regime and is set every year from life expectancy. A long career lowers the personal age: 4 months less for each year of service beyond 40, never below 60. Find your exact date in the retirement-age calculator.

Enrolled by 31-08-1993: the P1 + P2 formula

Those who enrolled in the CGA by 31 August 1993 without conditions vested by 2007 (the common case among today's retirees) add two parts1:

Pension = P1 + P2

The P1 part: service until 2005

P1 uses the old civil-service statute formula:

P1 = R × T1 ÷ 40

  • R is 80% of the relevant gross monthly pay earned by 31-12-2005, revalued. As a rule it is the pay of the post held in 2005 or the average of the last 3 years to that date.
  • R is capped at 12 × IAS: 12 × €537.13 = €6,445.56 in 20264. The cap only touches relevant pay above roughly €8,057.
  • T1 is the years of service the CGA counts up to 31-12-2005, capped at 40.
Relevant pay until 200580% (P1 base)25 years by 200540 years by 2005
€1,500€1,200.00€750.00€1,200.00
€2,000€1,600.00€1,000.00€1,600.00
€3,000€2,400.00€1,500.00€2,400.00

The P2 part: service since 2006

P2 applies the general Social Security rules to the post-2005 service3:

P2 = reference pay × annual rate × N

  • The reference pay is the monthly average of earnings since 2006 (officially, the revalued total divided by 14 times the number of years).
  • The annual rate runs from 2% to 2.3%, in brackets of the pay in multiples of the IAS:
Portion of the reference payAnnual rate
Up to 1.1 × IAS (€590.84)2.30%
1.1 to 2 × IAS (up to €1,074.26)2.25%
2 to 4 × IAS (up to €2,148.52)2.20%
4 to 8 × IAS (up to €4,297.04)2.10%
Above 8 × IAS2.00%
  • N only counts the years since 2006 strictly needed to complete the 40-year career together with T1. Someone with 30 years of service by 2005 accrues at most 10 more; someone with 40 accrues no P2 at all.
  • Unlike the pure general regime, P2 has no 30% minimum on the formation rate: it is a proportional part, not a standalone pension.

Enrolled 01-09-1993 to 31-12-2005: general-regime rules

Those who enrolled in the CGA between 1 September 1993 and 31 December 2005 have the pension computed entirely under the general-regime rules1: the career-average reference pay × the global formation rate (2% per year up to a 20-year career; 2% to 2.3% in brackets from 21 years, with a 92% global maximum). It is exactly the same math as the general-regime pension estimator; the CGA calculator has a dedicated mode for this group.

Retiring early cuts, retiring late pays a bonus

Retiring before the normal (or personal) age brings two cuts1:

  • 0.5% for each month of anticipation (those with 36 years of service by 2005 have their own 4.5%-per-year regime, and 3-year service modules beyond 36 reduce the penalised years);
  • the sustainability factor, for those without conditions vested by 2007: in 2026 the pension is multiplied by 0.8237, a 17.63% cut, the same life-expectancy mechanism as the general regime.

Early retirement on a very long career (the personal age dropped to 60) escapes the penalties. The cuts are permanent: they do not disappear once you reach the normal age. See the effect in the general regime in the early-retirement calculator.

Working past the normal age with 15 or more years of service earns a monthly bonus of 0.33% to 1%, depending on the length of service, up to age 70 and with a ceiling: the bonused pension never exceeds 90% of the final pay.

Groups with vested rights

Law 60/2005 preserved the old rules for those who already had vested retirement conditions by 31-12-2005 or by 31-12-2007 (for example, 36 years of service in 2005). Those groups have their own formulas, such as a single-part pension R × T ÷ 36 with the pay net of the 10% contribution1. They are residual cases today: most have already retired. When in doubt, the CGA applies the most favourable formula you qualify for.

A worked example from start to finish

Imagine someone who enrolled in the CGA in 1985, had 25 years of service by the end of 2005 on a relevant pay of €2,000, and worked 15 more years from 2006 on an average pay of €2,200:

StepCalculationValue
P1 base80% × €2,000 (below the 12 IAS cap)€1,600.00
P11,600 × 25 ÷ 40€1,000.00
P2 annual rateBrackets on €2,200€49.18 per year (2.24%)
Nmin(15; 40 − 25)15 years
P249.18 × 15€737.72
Monthly pensionP1 + P2€1,737.72
Annual pension× 14 payments€24,328.03

The pension is about 79% of the average pay since 2006: compare it with your target in the replacement-rate calculator.

Careers split across the two regimes can request a unified pension: the periods add up to check guarantee periods and each regime pays its proportional share, computed under its own rules. The request is filed with the regime of the last enrollment. Estimate each share separately: the CGA one in the CGA pension calculator and the general-regime one in the pension estimator.

Common mistakes

  • Assuming every public worker retires through the CGA

    The CGA closed to new members on 31 December 2005. Anyone who joined the public sector from 2006 pays into Social Security and gets the general-regime pension, not the CGA one.

  • Expecting 80% of the final salary

    The 80% applies only to the P1 part and the service until 2005: with 25 years by that date, P1 is 80% × 25 ÷ 40 = 50% of the relevant pay. Service since 2006 accrues at 2% to 2.3% per year, on the average earnings since 2006.

  • Counting every year worked in the P2 part

    P2 only counts the years since 2006 strictly needed to complete a 40-year career together with P1. Someone with 30 years of service in 2005 accrues at most 10 more, even after working 15.

  • Ignoring the early-retirement penalties

    Retiring before the normal (or personal) age cuts 0.5% for each month of anticipation and, for those without vested conditions by 2007, applies the sustainability factor on top: in 2026 the pension is multiplied by 0.8237, a 17.63% cut. The cuts are permanent.

Frequently asked questions

How is the CGA retirement pension calculated?
It depends on the enrollment date. By 31 August 1993: pension = P1 + P2, where P1 = 80% of the relevant pay until 2005 (capped at 12 IAS) × years until 2005 ÷ 40, and P2 applies the general-regime rules to the years since 2006 needed to complete 40. From 01-09-1993 to 31-12-2005: the pension follows the general-regime formula entirely.
At what age can I retire through the CGA in 2026?
At 66 years and 9 months, the same normal age as the general regime, with at least 15 years of service. More than 40 years of career lowers the personal age by 4 months per extra year (never below 60). Early retirement is possible from age 60 with 40 years of service, with penalties.
What are the P1 and P2 parts?
P1 pays for service until 31 December 2005 under the old civil-service formula: 80% of the relevant pay, proportional to the years over 40, capped at 12 IAS. P2 pays for service since 2006 under the general Social Security rules, with annual rates of 2% to 2.3% in pay brackets.
Who pays into the CGA and who pays into Social Security?
The CGA closed to new members at the end of 2005: only existing subscribers remained. Anyone who joined the public sector from 1 January 2006 pays into Social Security and follows the general regime.
How many times a year is the CGA pension paid?
14 times: 12 monthly payments plus the holiday and Christmas allowances, like public-sector salaries.

Sources

  1. 1.CGA: Cálculo da pensão de aposentação (official calculation note, January 2026)Caixa Geral de Aposentações · retrieved 13 Jul 2026
  2. 2.CGA: Pensão de aposentação (conditions and rules)Caixa Geral de Aposentações · retrieved 13 Jul 2026
  3. 3.Decree-Law 187/2007, of 10 May: the general-regime rules applied to the P2 partDiário da República · retrieved 13 Jul 2026
  4. 4.Social Support Index (IAS) in 2026: €537.13Instituto da Segurança Social · retrieved 13 Jul 2026

Author / Reviewed by

Author

Thorben Rasmus Idel

Co-founder & writer

Co-founder of Calculadora Capital and the writer behind the methodology on every calculator and article. An entrepreneur and active investor, Thorben founded Idel Versandhandel GmbH, an international trading company operating across 16 countries, and invests across stocks, ETFs and cryptocurrency. He writes the methodology and verifies the math behind each page, drawing on hands-on business and investing experience to keep the tools and explanations grounded in how money, markets and taxes actually work for everyday people in Portugal.

Reviewed by

Nahar Geva

Co-founder & reviewer

Co-founder of Calculadora Capital and the independent reviewer behind every calculator and article. An entrepreneur and active investor, Nahar brings a data- and product-driven mindset together with hands-on experience in the markets — investing across stocks and ETFs as well as cryptocurrency and other digital assets, alongside broader personal finance and real estate. On each page Nahar reviews the methodology and double-checks the math and figures, pressure-testing how the tools and explanations hold up against the way money, markets and taxes actually work for everyday investors.

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