The arrival of September marks the end of the summer holidays in Spain, ushering in one of the most financially challenging times of the year for many families: the ‘cuesta de septiembre’ (September slope). This year, the challenge is particularly severe due to sharp increases in back-to-school, energy, inflation, and mortgage-related costs.
Record-Breaking Back-to-School Expenses with Significant Regional Differences
According to estimates from Spain’s Organization of Consumers and Users (OCU), the average back-to-school cost per student in 2023 has reached a staggering €2,484, a 4% increase from last year. Since 2019, this expense has accumulated a €514 increase, a rise of approximately 26%.
The cost gap between different education systems is huge. The average expense for a student in a private school is around €3,450, while costs for public and semi-private (concertado) schools are comparatively lower.

Regionally, Madrid and Catalonia are the two autonomous communities with the highest back-to-school costs, with average expenses per student reaching €3,512 and €3,000, respectively. By educational stage, early childhood education has the highest average cost at around €2,600, followed by primary school (€2,355) and secondary school (€2,216). These costs cover tuition, textbooks, uniforms, transportation, meals, and various school supplies, placing a concentrated strain on family budgets.
Soaring Energy and Fuel Prices Drive Up Travel Costs
The rise in energy prices has further burdened household finances. OCU data shows that the average electricity bill in the regulated market reached €79.75 in August, not only a 21% increase from June but also the highest record since February of this year.
Meanwhile, fuel prices continued to climb throughout the summer. By the end of August, the price of diesel had risen to around €1.87/liter, an increase of about 21% since early July, meaning a full 55-liter tank costs nearly €103. The price of gasoline also rose to approximately €1.74/liter, up 13.3% from before the summer holidays, making a full tank cost about €96.
The Double Squeeze of Inflation and Mortgage Rates
Beyond specific expenses, overall inflation is also pressuring household consumption. Spain’s inflation rate reached 4.3% in August, the highest level in 2023. The year-on-year price increase for some food items, such as eggs and citrus fruits, exceeded 10%, while services like streaming, veterinary care, car insurance, dining, and haircuts also saw significant price hikes.
For families with mortgages, the financial outlook for September is equally grim. The average Euribor (Euro Interbank Offered Rate) for August reached 2.952%. For those whose monthly payments are adjusted based on this figure, the repayment pressure will continue to grow. It is estimated that for a €200,000 loan, the monthly payment could increase by about €88, while for a €350,000 loan, the increase could be around €155. The combined assault of back-to-school expenses, energy bills, rising prices, and mortgage pressure makes this year’s ‘cuesta de septiembre’ steeper than ever.