Bank Profits Cool in the First Quarter as Lending Margins Tighten
A new Bank of Portugal report shows banking-sector return on equity slipped to 13.65% in the first quarter of 2026 as falling rates compress net interest margins.
Profitability across Portugal's banking sector cooled in the first three months of 2026, as falling interest rates began to erode the lending margins that fuelled record earnings in recent years, according to a new report from the Banco de Portugal (Bank of Portugal).
The quarterly study, "Sistema Bancário Português: Desenvolvimentos Recentes" (Portuguese Banking System: Recent Developments), published around 25 June 2026, found that the sector's return on equity slipped to 13.65% in the first quarter, down 0.29 percentage points from the same period a year earlier. The figure marks a continued retreat from a 2024 peak of roughly 15.1%. Return on assets, a separate measure of profitability, eased to 1.27%, a decline of 0.02 percentage points on the year.
Return on equity, or ROE, gauges how much profit a bank generates from the money its shareholders have invested, while return on assets measures earnings relative to everything the bank owns. Higher figures point to a more profitable lender; the modest declines suggest the exceptional run of bank profits is beginning to taper.
Margins Under Pressure as Rates Fall
The central squeeze stems from net interest margins, the gap between what banks earn on the loans they extend and what they pay out to depositors. After years of elevated rates that allowed lenders to charge more on mortgages and corporate credit while holding deposit rates comparatively low, the European Central Bank's rate-cutting cycle has reversed that dynamic. Loan interest income is now falling faster than deposit costs, narrowing the spread that underpins much of a bank's revenue.
For borrowers, lower rates can translate into cheaper new loans and reduced mortgage repayments. For savers, the same downward drift tends to mean slimmer returns on deposits, even as total system deposits climbed to 202 billion euros. The combination explains why banks are earning less per euro lent even as their balance sheets remain robust.
Costs Rise While Loan Quality Holds
Efficiency also deteriorated. The sector's cost-to-income ratio, which expresses operating expenses as a share of income, worsened to 44%, an increase of 0.9 percentage points. A lower ratio signals a leaner, more efficient bank, so the rise indicates that costs are consuming a larger slice of revenue. The deterioration was driven chiefly by higher staff costs, which added 1.0 percentage point, and increased information-technology spending, which contributed a further 0.4 percentage points.
Despite the tighter margins, the underlying health of the loan book held firm. The non-performing loans ratio, a measure of credit that borrowers are struggling to repay, remained stable at 2.1%, suggesting that the profitability squeeze reflects market conditions rather than mounting defaults.
Capital buffers likewise stayed comfortable. The Common Equity Tier 1 ratio, the core gauge of a bank's financial strength and its capacity to absorb losses, stood at 18%, well above regulatory minimums. The picture that emerges is of a sector still solidly capitalised and exposed to few bad loans, but facing a gradual normalisation of earnings as the era of high rates recedes and competition for both lending and deposits intensifies.
