Worked in Belgium and Ireland? Belgian Pension and Irish State Pension Rights Explained

Belgium is home to one of the largest concentrations of Irish workers outside Ireland itself. The EU institutions in Brussels — the European Commission, European Parliament, European Council, and European External Action Service — employ thousands of Irish nationals. Beyond the institutions, Brussels hosts a vast lobbying and NGO sector, and Belgian cities are home to significant Irish communities in pharmaceuticals, finance, and other industries.

Because both Ireland and Belgium are EU member states, EU Regulation 883/2004 applies in full. Your Belgian social insurance contributions and Irish PRSI contributions are coordinated — meaning each country will pay you a pro-rata pension based on the time you spent working there, and each country looks at your combined record when assessing whether you meet qualifying thresholds.

The Belgian Pension System: Three Separate Regimes

Belgium's pension system is divided into three entirely separate regimes, depending on what kind of worker you were. Each has different rules, contribution rates, and benefit levels. Most Irish workers in Belgium fall into the private sector employee regime, but it is worth checking which applies to you.

Regime	Who it covers	Administrator
Private sector employees (salariés / werknemers)	Most employed workers in the private sector	ONP/RVP (Office National des Pensions / Rijksdienst voor Pensioenen)
Civil servants (fonctionnaires / ambtenaren)	Belgian federal, regional, and local government employees	SdPSP / PDOS (separate civil service pension service)
Self-employed (indépendants / zelfstandigen)	Self-employed and company directors paying INASTI contributions	INASTI/RSVZ

This guide focuses on the private sector employee regime (ONP/RVP) as this covers the majority of Irish workers in Belgium.

How the Belgian Private Sector Pension is Calculated

The Belgian pension formula for private sector employees is straightforward once you understand the three components:

Pension = (Career years / 45) × Reference salary × Rate

• Career fraction: your actual Belgian career years divided by the Belgian reference career length, which is 45 years. Someone who worked 10 years in Belgium has a career fraction of 10/45.
• Reference salary: your average career earnings across all your Belgian working years, indexed to wage evolution over time. This is not your final salary — it is the average across your whole Belgian career, adjusted upward each year to reflect wage growth.
• Rate: 60% if you are assessed as a single person; 75% if you qualify for the household rate (applicable if you have a financially dependent spouse who earns below a certain threshold).

To illustrate: an Irish person who worked 10 years in Belgium, earned an average salary of €45,000 per year (after indexation), and is assessed as single, would receive approximately:

(10/45) × €45,000 × 60% = approximately €6,000 per year (€500 per month)

This is in addition to whatever Irish State Pension (Contributory) they receive based on their Irish PRSI record.

Belgian Pension Key Facts (2026)

Item	Detail
Standard retirement age	66 (rising to 67 in 2030)
Early retirement (2026)	From 63 with 42 years of career (subject to reform)
Reference career length	45 years
Single rate	60% of reference salary
Household rate	75% of reference salary (if dependent spouse qualifies)
Minimum pension (full 45-year career, 2026)	Approx. €1,800/month (pro-rated for shorter careers; minimum 30 years for full minimum)
Employee ONSS contribution rate	Approx. 13.07% of gross salary
Employer ONSS contribution rate	Approx. 24.77% of gross salary
Belgian pension portal	myPension.be

myPension.be: Your Belgian Pension Dashboard

Belgium operates a centralised pension portal called myPension.be where you can see your Belgian pension entitlements in one place. It shows your projected pension amount at different retirement ages, your career overview, and any second-pillar occupational pension entitlements linked to your record.

Accessing myPension.be requires Belgian digital identification — either an itsme account or a Belgian electronic identity card (eID). If you no longer have access to either, you can contact the ONP (Office National des Pensions) directly at their international inquiries office: Tour du Midi, Avenue Fonsny, 1060 Brussels. ONP can provide your contribution record and pension projections by post or secure communication.

Belgian Occupational (Second-Pillar) Pensions

If you worked in Belgium as an employee, you may also have a second-pillar occupational pension. In Belgium, these are governed by the CAP/WAP law (the Act on Complementary Pensions), which requires employers to provide occupational pension plans in many sectors. Not all employers are covered, but it is very common in larger private sector organisations, banks, insurance companies, and pharmaceuticals.

When you left a Belgian employer, your vested occupational pension rights were retained in the pension fund. You cannot access them before retirement age (which is currently 60 for vested benefits). Your former employer's HR department, or the pension fund administrator they used, will hold this information. If you are unsure who the administrator is, myPension.be often shows second-pillar entitlements alongside the first-pillar state pension data.

EU Coordination: Totalisation with Irish PRSI

Because both Belgium and Ireland are EU member states, EU Regulation 883/2004 applies in full. The key coordination rules are:

• Each country pays a pro-rata pension based on the time you actually worked there
• Belgian ONSS years and Irish PRSI years are added together (totalised) when assessing whether you meet qualifying thresholds in either country
• You receive both pensions simultaneously — one from Belgium, one from Ireland
• The Irish Department of Social Protection and the Belgian ONP communicate directly under EU coordination rules

For the Irish State Pension (Contributory), you need a minimum of 520 paid PRSI contributions. If your Irish contributions fall short of this threshold, your Belgian years can be added to bring the total above 520 — Ireland then pays a pro-rata pension based on your actual Irish years. Belgium does the same calculation in reverse.

See our EU pension coordination guide for a full explanation of how the pro-rata calculation works across multiple EU countries.

Special Case: EU Institution Staff in Brussels

A significant number of Irish people in Belgium worked as officials of the EU institutions — European Commission, European Parliament, Council, or agencies. If you were employed as an EU official under the EU Staff Regulations, your pension situation is different from a typical Belgian worker:

• EU officials are covered by the EU Joint Pension Scheme, not Belgian social security. Their pension is paid by the EU institutions directly, not by Belgium or Ireland.
• This EU pension is separate from and in addition to any Irish State Pension you may be entitled to based on pre-EU Irish PRSI contributions.
• EU pension rights cannot normally be combined or totalised with national state pension systems in the same way as bilateral coordination works.

Applying for Belgian Pension

When you approach retirement age, you apply for your Belgian pension through the ONP. You can do this via myPension.be, or by submitting a paper application to ONP's international service. You can also apply through the Irish Department of Social Protection — they will forward your claim to Belgium under EU coordination rules. This is often the easiest approach if you are applying for both Irish and Belgian pensions at the same time.

Belgium typically asks you to apply between six months and one year before your intended retirement date. The pension will be paid directly to your Irish bank account in euros.

Tax on Belgian Pension Income in Ireland

Ireland and Belgium have a Double Taxation Agreement (DTA) in force (signed 1972, updated subsequently). For an Irish resident receiving a Belgian ONP or occupational pension, the general position is that the income is taxable in Ireland as foreign pension income. Belgium may withhold tax at source for non-residents, but DTA provisions allow you to credit Belgian tax against your Irish liability. Declare Belgian pension income on your Irish tax return. Contact Revenue Ireland if you have specific questions about your situation.

Who Does This Apply To?

The Irish community in Belgium is concentrated in Brussels, and is one of the most distinct sub-groups within the Irish diaspora. Key groups include:

• EU institution staff and contract agents at the European Commission, European Parliament, European Council, and EU agencies
• Lobbyists, lawyers, and NGO workers operating in the Brussels bubble around the EU institutions
• Workers at NATO headquarters in Mons (Belgium), many of whom are in Belgian social security
• Pharmaceutical sector employees at Johnson & Johnson, UCB, GSK, and other Belgian pharma companies
• Finance and banking workers in Brussels and Antwerp
• Irish people who moved to Belgium with Belgian or other European partners

Step-by-Step: What to Do Now

1. Log into myPension.be. If you have a Belgian itsme account or eID, log in to see your Belgian pension entitlement projected to different retirement ages. If you cannot access the portal, contact ONP directly in Brussels.
2. Check for a second-pillar occupational pension. Contact your former Belgian employer's HR department or pension fund administrator. myPension.be may show this automatically.
3. Check your Irish PRSI record. Log into MyWelfare.ie and download your Contribution Statement. Understand how many paid contributions you have in Ireland.
4. Consider whether you need voluntary PRSI contributions. If your Irish contribution years are low, you may be able to make voluntary PRSI contributions to increase your Irish State Pension entitlement. See our guide on State Pension for details.
5. Apply for Belgian pension at the right time. Apply through myPension.be or the Irish Department of Social Protection between six months and one year before your intended retirement date.
6. Declare Belgian income to Revenue. Make sure your Belgian pension is included on your annual Irish tax return to avoid interest and penalties.

Belgian Pension Formula: Worked Example

Scenario	Irish worker, 10 Belgian years, €45,000 avg salary, single
Career fraction	10 / 45 = 0.222
Reference salary	€45,000 (indexed)
Single rate	60%
Annual Belgian pension	0.222 × €45,000 × 0.60 = approx. €6,000/year
Monthly Belgian pension	Approx. €500/month
Plus Irish State Pension (if 520+ PRSI contributions)	Up to €289.30/week (2026 rate) depending on Irish contributions