Small savers in Spain demanded 15 billion euros in Treasury bills over the last six months as higher interest rates and inflation boosted debt yields.
According to data gathered by EFE, retail investors rushed back into Spanish Treasury debt following market shifts triggered by conflict in the Middle East. Since the start of the war in Iran and the blockade of the Strait of Hormuz on February 28, oil prices climbed more than 40 percent while European inflation rose above 3 percent.
Those inflationary pressures led the European Central Bank to raise interest rates in June for the first time in almost three years. Although the central bank kept rates unchanged in July, financial markets predict further rate increases before the end of the year.
Spanish Sovereign Debt Auctions and Retail Demand
Expectations of additional rate hikes drove sovereign debt yields higher in the secondary market, sending returns on Spanish Treasury bills to new highs. In the latest auction, six month bill yields climbed to 2.512 percent, reaching their highest level since January 2025. Yields on twelve month bills reached 2.679 percent, marking their highest point since September 2024.
Data from the Bank of Spain shows household investment in Treasury bills increased in May for the third consecutive month, reaching 20,331 million euros. Investment grew by 903 million euros in May alone. Spanish households began increasing their holdings of Treasury bills in February after eighteen consecutive months of declines.
Market Drivers and Tax Considerations
Félix López, fixed income manager at Abante, told EFE that the future path of Treasury bill investments depends on geopolitical developments, which remain the main driver of oil prices and inflation. López said this situation is one of the rare cases where a single clear factor determines market movement. He noted that if geopolitical tension eases, yields may have reached their peak, but if conflict continues or intensifies, yields could rise even further.
López also warned families that visual and nominal returns must be evaluated alongside tax obligations. He added that while Treasury bills appear to offer higher returns, investors should consider other options such as investment funds once taxes from Hacienda are applied.
Previous Demand Peaks and Rate Hike History
Investor appetite for Treasury bills previously peaked in late 2022 and early 2023, when interest rates approached 4 percent while banks offered minimal returns on deposits. In the summer of 2022, the European Central Bank raised interest rates for the first time in more than a decade to curb inflation linked to the war in Ukraine.
Following that initial increase, the central bank raised the price of money ten times, reaching 4.50 percent in September 2023. That rise in debt yields triggered an avalanche of requests for Treasury bills, bonds, and obligations, causing long lines of small savers at the Bank of Spain and dedicated retail customer service by the Treasury.
