12-month Euribor – December 2023
The average 12-month Euribor for December 2023 is 3.679 %, computed from 19 daily fixings (complete). The month opened at 3.902 %, closed at 3.513 %, with a low of 3.513 % and a high of 3.902 %. Versus November 2023 the average is down -0.343 pp.
Most variable mortgages in the euro area are revised on the monthly average, not the daily value. A loan that resets in December on the 12-month Euribor plus 1 pp would pay 4.68 % for the coming period.
Every number on this page is a published fixing, not an estimate: daily values come from the Bank of Finland's copy of the Euribor series, monthly averages are the arithmetic mean of those fixings and are cross-checked against the ECB Data Portal, and the tables are rebuilt each business day after the previous day's fixing appears. Tenors use the ACT/360 convention. Where a monthly average differs from the ECB figure by more than a hundredth of a point the methodology page lists the case.
What does it mean for a mortgage?
Annuity formula; assumes the rate applies for the whole remaining term. Your bank may round or use a different convention.
December 2023
Source: Bank of Finland. Published with a 24-hour delay.
Date
| Date | Rate | Change |
|---|---|---|
| 3.513 % | -0.023 pp | |
| 3.536 % | -0.018 pp | |
| 3.554 % | -0.027 pp | |
| 3.581 % | -0.001 pp | |
| 3.582 % | -0.020 pp | |
| 3.602 % | -0.033 pp | |
| 3.635 % | +0.022 pp | |
| 3.613 % | -0.031 pp | |
| 3.644 % | -0.075 pp | |
| 3.719 % | -0.039 pp | |
| 3.758 % | +0.004 pp | |
| 3.754 % | +0.003 pp | |
| 3.751 % | +0.026 pp | |
| 3.725 % | -0.002 pp | |
| 3.727 % | -0.001 pp | |
| 3.728 % | -0.057 pp | |
| 3.785 % | -0.009 pp | |
| 3.794 % | -0.108 pp | |
| 3.902 % | – |
Source: Bank of Finland. Published with a 24-hour delay.
Frequently asked questions
What is the 12-month Euribor average for December 2023?
3.679 %, computed from 19 daily fixings. The ECB's official monthly average is 3.679 %.
My mortgage revises with the December average – what rate applies?
Reference 3.679 % plus your contractual spread; with a 1 pp spread the new rate is 4.68 %. Check whether your contract uses the previous month or the month before that.
Source: Bank of Finland (daily fixings), ECB Data Portal (monthly averages). Published with a 24-hour delay. 07/09/2026