EU coordination rules
Pro-rata pension calculation, step by step
6 min read · Updated 2026-07-14
The pro-rata calculation is the mechanism that makes a fragmented career add up. It answers one question: if your whole European record had been completed in this country, what would the pension be — and what fraction of it does this country owe?
Step 1 — the theoretical amount
The institution computes the pension you would receive if every insurance period, in every country, had been completed under its own rules. This is the theoretical amount, and it is deliberately larger than the national-only pension.
Step 2 — the proportion
It then multiplies that amount by the ratio of periods completed in that country to your total European periods. Twelve years in Germany out of a thirty-six-year record gives a factor of one third.
Step 3 — the comparison
Finally the institution compares the pro-rata result with the pension calculated on national periods alone and pays whichever is higher. This guarantees that mobility never reduces a pension below the purely domestic outcome.
Frequently asked questions
- Why is my pro-rata pension lower than the theoretical amount?
- Because the theoretical amount assumes your entire career was insured in that one country. The proportion step reduces it to the share actually completed there; the other countries pay their own shares.
- Does a higher salary abroad increase the pro-rata amount?
- Not directly. Each country calculates on its own earnings record, so foreign salaries affect the foreign pension, while abroad periods mainly affect entitlement and the proportion.
- How accurate is an estimate before I file a claim?
- An estimate based on verified statements is usually close in structure but not exact: valorisation coefficients, indexation and credited periods are only finalised by the institution when it processes the claim.
Country guides
Official institution, login method, document name and expected waiting time for every country we cover.
Related articles
- EU pension coordination: how Regulation 883/2004 worksThe EU does not create one pension. It coordinates national schemes: periods are aggregated for entitlement and each country pays its own proportional share.
- How to find a pension you built up abroadWorked abroad and lost track of the contributions? Here is how to identify every institution that holds pension rights in your name and get proof.
- Contribution years explained: weeks, months, quarters and daysCountries count pension periods in different units. Learn how weeks, quarters and days convert into years — and why totals differ between statements.
Informational content, not legal or financial advice. Always confirm your situation with the competent national institution.