Official publication did not cover autumn 1998. It starts on the last two TARGET days of that year.
Key: 30 Dec 1998 = 3.215%. 31 Dec 1998 = 3.213%. Two-day mean = 3.214%. January 1999 is the first full closed month in the Banco de España / irph.es file.
Date
12-month print
30 December 1998
3.215 %
31 December 1998
3.213 %
El País, 31 December 1998: the European Banking Federation set the one-year Euribor for the first time at 3.215%. elpais.com.
Quotes from the summer 1998 test period are not treated here as official 12-month prints. October and November 1998 are left empty on purpose.
2008 is the spike year people still open. The 2009 file is the come-down. Those two years teach a simple lesson: a monthly average can travel a long way in twelve months. They do not teach you what your 2026 letter will say. For that letter you need last year’s month, not a crisis poster.
The mid-2010s into 2021 hold the negative prints. A negative 12-month average did not mean a zero household payment. It meant index plus spread, unless a floor sat in the deed. If your loan lived through that window and the payment never went as low as the newspaper, look for the floor before you look for a conspiracy.
2022 and 2023 are the tightening years. If a letter from that window still feels expensive, compare that month with the same month a year later. Use the compare-dates tool or two rows from history. Then run loan impact with the principal you still owe, not the original amount.
Compare closed months with closed months. A daily print from Tuesday against a monthly average from 2008 is a crooked ruler. A 3-month tenor against a 12-month clause is another crooked ruler. History is only useful when the two sides of the comparison share a tenor and a clock.
U.S. pages titled “historical mortgage rates” usually mean Freddie or Fannie 30-year series. That is another market. The SOFR map on this site exists so a U.S. reader can leave cleanly instead of mixing two countries in one chart.
Year files: 2008, 2009, 2010, 2012, 2014, 2025, 2026, and the first-print note for December 1998. Long table: history. Administrator: EMMI.
December 1998 is a footnote, not a household reset month for anyone reading this in 2026. The first prints exist so the history table does not pretend the series began on a tidy 1 January 1999 if the source file also carries those late-1998 rows.
Use 1998 when you are writing about the birth of the index. Use 2008 when you are writing about stress. Use last year when you are writing about your letter. Three different jobs. One series.
The long monthly table from 1999 onward is the working archive. Year files exist for the calendars people actually open. This first-print page is the caption under the first row, not a fourth calculator.
Continue on history, historical rates, and Euribor 2008. Administrator: EMMI.
A good test of any page about Euribor is whether a reader can leave with one sentence they could read to a bank clerk. The sentence is always some version of this: “I am using the twelve-month tenor, the closed month named in my letter, plus the contractual spread.” If a paragraph on this page does not help you say that sentence, skip it. If it does, copy the figure from the matching table and stop shopping for a fourth website.
Couples argue about websites because the websites argue about clocks. Agree the clock first, then open one calculator together. Loan impact is enough for most household letters. Daily-versus-average is enough when someone insists on using this morning’s print. Spread builder is enough when the only missing piece is the margin in the deed.
Keep a short reading list, not a pile. What Euribor is. How it is calculated. Daily versus average. How it affects a loan. Who publishes it. That is five guides. The year files are data. The forecast pages are warnings. The rest is navigation.
Another way to keep the page useful is to walk through a bad copy. Someone finds a newspaper chart, reads “Euribor” in the title, and pastes 2.4 percent into a spreadsheet that already had 2.4 percent last year. Nothing moves. They decide the review is a scam. What actually happened is that they pasted a 3-month tenor, or a policy rate, or a forecast bubble. The twelve-month closed month for their letter was sitting on the history table the whole time.
A second bad copy: someone uses this morning’s print because it is large and orange. The deed named August. August is finished. The letter will use August. The orange number is a market diary, not a legal row. Daily-versus-average exists so that mistake becomes visible in euros instead of in a comment thread.
A third bad copy: someone includes insurance inside the Euribor box and then accuses the calculator of being optimistic. Insurance is a separate line. The calculator on this site is the index plus the spread plus the French formula. Everything else is homework after the result.
Readers outside the euro area can still use these pages. They just have to accept that the product is a euro term benchmark. It will not price a dollar mortgage and it will not replace a 30-year fixed advertisement. The SOFR and LIBOR guides exist so that exit is clean.
Close the tab when you can say the sentence without looking. Twelve-month tenor. Closed month named in the letter. Plus the spread. French formula. That is the whole household machine. Everything else on this website is either a table that feeds the machine or a warning about mixing clocks, countries and dead panels.
When you are done, the useful exits are Euribor today for the market diary, history for the legal row, loan impact for the payment, and EMMI if you want the administrator rather than a republisher. That is a complete morning.
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