Spain's inflation jumps to 4.9% in September, highest since 2023

Inflation soars to 4.9% and shatters the narrative of moderation

0.05% annual. That is the return offered by a term deposit at a leading bank to a Spanish saver. Up to 1% if you accept the fine print from a lesser-known institution. And around 4% for anyone buying a ten-year Spanish bond. That is the board while the CPI rises 4.9% year-on-year in September, six tenths more than in July and its highest level since February 2023.

The figure published by the INE now strings together three months of increases and places the headline index above 4% for the second time since April 2023. Core inflation climbs two tenths to 3.1%, its highest level since March 2024. Confirmation comes on 14 October.

What has risen and why the CPI has reached 4.9%

Fuel has been the main driver of the index. Add to that the base effect: a year ago petrol prices fell and now the comparison looks ugly. To a lesser extent, package holidays are also pushing up prices, as they have fallen less this September than twelve months ago. The cocktail is as predictable as it is uncomfortable.

In monthly terms, September over August, the CPI rose 0.3%, four tenths less than the previous month. Eight consecutive months of monthly increases. Core inflation, which until now seemed to withstand the shock and gave a signal of structural relief, stands 1.8 points below the headline index. Enough to breathe, not enough to claim victory.

The anti-crisis shield that does not touch interest rates

The Council of Ministers approved a new package of measures to cushion the price surge, especially in energy, coinciding with the worsening conflict in the Middle East. Aid to the agri-food sector is extended, including compensation for the extra costs of agricultural diesel, foreseeably until 31 December. The Economy Ministry stresses that supporting farming and transport contains the contagion to other prices, what it calls second-round effects.

The data partly prove them right: between March and August food prices fell 0.6%. The government also wants to maintain a medium-term perspective with electrification and decarbonisation measures. What is nowhere to be seen is an interest rate hike that would make risk-free saving profitable. That lever is moved by someone else.

Wages, pensions and income tax: the equation that does not add up

With CPI at 4.9%, pensions are revalued in line with the index and public sector wages carry agreed increases far below. According to circulating calculations, the public sector pay rise is around 2% this year, while multi-year bargaining points to 4.5% for 2027 plus 0.5% with retroactive effect from January 2026. A 5% that, with the CPI make-up, will hardly plug the hole.

Add to that income tax. Without deflating the tax brackets, a good part of the nominal increase in a salary tied to the index stays with the Treasury. Updating pensions and public wages to the CPI is, for some analysts, the variable that could strain public finances more than any other.

For the private sector, an even harsher calculation looms: between 30% and 35% accumulated loss of purchasing power, with price growth above 30% since 2010 against collectively agreed wages that have lagged behind. For low wages, buying a home or a car has become prohibitive.

The saver with no way out

The recurring conclusion is that there is no choice but to take on risk in equities to avoid losing out. Some argue that Spain is well above the European average in inflation, while others point to shrinkflation as the silent deception: smaller packages, same price. True inflation, they say, is impossible to calculate.

An official 4.9%. A 0.05% for money parked. The rest comes out of your pocket.