# euro overnight index average (EONIA)

- Canonical URL: https://www.gerhardmerk.de/euro-overnight-index-average-eonia
- Post ID: 604644
- Modified: 2026-09-07T19:47:59+00:00
- Language: en

## Definition

EONIA was the euro money market’s benchmark for unsecured overnight interest rates. Until 30 September 2019, it was derived from euro interbank lending rates submitted by a panel of participating banks and averaged according to transaction volumes. A revised calculation applied from 2 October 2019: the rate was set at the euro short-term rate (€STR) with an adjustment of 8.5 basis points. The €STR used in this calculation was based on money-market activity recorded on the previous TARGET2 business day. EONIA ceased to be published on 3 January 2022; the €STR subsequently became the market’s relevant overnight reference rate.

## Machine-readable

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