Three Banks Capture 73% of Lisbon's €750M Youth-Mortgage Reinforcement — BPI, BCP and Santander Take the Bulk as Public Guarantee Total Pushes Past €2.3bn

The despacho is dated 20 April 2026, signed by Finance Minister Joaquim Miranda Sarmento, and gazetted in the Diário da República on Saturday, 25 April. It injects €750 million into the public guarantee that lets Portuguese under-35s borrow up to 100% of the price of a first home — and it does so by allocating the bulk of that envelope to a small handful of banks. BPI takes €250 million, Santander Totta and Banco Comercial Português take €150 million each, and together those three institutions account for €550 million, or 73% of the reinforcement. Crédito Agrícola gets €25 million, and the Caixa Económica da Misericórdia de Angra do Heroísmo gets €200,000. The remaining quotas are spread across the rest of the participating banks.

The reinforcement takes the total ceiling on the programme from €1.55 billion to €2.30 billion — a 48.4% increase — and is the second top-up since the guarantee took effect, after a first €350 million injection in September 2025. ECO published the bank-by-bank allocation on 24 April; the official publication followed in Saturday's DR.

Why the envelope had to be raised again

The number that explains the rush is the utilisation rate. By the end of 2025, banks had distributed €1.46 billion of the €1.55 billion envelope, an allocation rate of 94%. The remaining margin — under €90 million — would have been exhausted within weeks of Q1 2026 had the Government not topped it up. With Portugal's housing market still tight and prices in Greater Lisbon's median freguesias above €3,400 per square metre, demand for the public guarantee has outrun every projection the Finance Ministry has made since the scheme launched.

In 2025, more than 25,000 housing-credit contracts were signed under the public guarantee, representing 42% of all home-loan contracts taken out by under-35s in Portugal that year. That share alone shifted the structure of the under-35 mortgage market — the public guarantee is no longer a niche backstop, it is the dominant entry channel for first-time young buyers.

The bank-by-bank breakdown

• BPI: €250 million (33% of reinforcement). The CaixaBank-controlled lender is the single largest beneficiary of the new tranche.
• Santander Totta: €150 million (20%). Tied with BCP for second place.
• Banco Comercial Português (BCP): €150 million (20%). Closely matched with Santander.
• Crédito Agrícola (SICAM): €25 million (3.3%).
• Caixa Económica da Misericórdia de Angra do Heroísmo: €200,000. A symbolic Azores allocation.

The three-bank concentration of 73% mirrors the wider concentration of the Portuguese mortgage market — BPI, BCP and Santander together originate the majority of new home loans nationally — and the allocation effectively reinforces that market structure rather than spreading the public exposure more widely.

Why high-LTV exposure has jumped — and what the regulator thinks

The other number that explains why this reinforcement has provoked debate is the share of new home loans being written above 90% loan-to-value. Before the public guarantee, those high-LTV loans were a vanishing slice of new origination — 0.1% in 2024. In 2025, with the guarantee absorbing first-loss risk on the equity portion, that share jumped to 19% of new mortgage origination, and in the primary-residence segment it reached 24%. In other words: roughly one in four new primary-residence loans signed in Portugal in 2025 had an LTV above 90%, and almost all of that segment is the under-35 cohort using the State-backed guarantee.

That step-change is what has Banco de Portugal preparing the first meaningful tightening of its macroprudential framework since the Recommendation was introduced. The regulator is examining whether to raise the "stress-rate" premium — the additional interest-rate buffer banks must apply when assessing borrower affordability — from 1.5 percentage points to as high as 3 percentage points. The argument is straightforward: if the State is absorbing equity risk on the loan, the bank's affordability test must be tightened to compensate, otherwise borrowers are stretched against income on terms that fail the day rates move higher.

Banco de Portugal Governor Álvaro Santos Pereira has signalled the macroprudential review is at an advanced stage and likely to land before the summer. The dynamic is now an open choque frontal between the Government and the regulator — one is pushing through cheap, State-backed entry into the housing market for young buyers; the other is preparing to tighten affordability tests to keep system risk inside acceptable bounds.

What the public guarantee actually does

The public guarantee, rolled out under the Government's housing package, lets eligible borrowers under the age of 35 finance up to 100% of the property price on a first owner-occupied home, with the State guaranteeing the slice between 80% and 100% of LTV. The borrower still pays the bank's standard mortgage rate; the State's role is to absorb the equity-shortfall risk that would otherwise have required a 20% down-payment. Eligibility is means-tested by income tier and conditional on the property being a primary residence.

Quotas are allocated bank-by-bank up to the global ceiling, which is why each reinforcement carries a per-bank breakdown. When a bank exhausts its quota, it stops originating new public-guarantee contracts until the ceiling is raised — which is why the 94% utilisation rate at end-2025 was already approaching a hard wall. With the new €750 million on top, banks have headroom for roughly another €750 million of new under-35 origination before the next reinforcement is needed.

The political context: housing as a 2026 fault line

The youth public guarantee is the single most-used housing instrument in the Government's package, and its expansion to €2.3 billion makes it the largest fiscal commitment to the under-35 housing problem in recent Portuguese policy. Critics argue it pushes prices upwards by lifting the binding constraint on demand — borrowers who could not previously afford the 20% down-payment can now bid for housing, and that demand pressure is not offset by an equivalent supply response. Government argues that without the guarantee, the under-35 cohort is simply locked out of the market.

What the new tranche makes unambiguous is that the State is now the dominant insurer of under-35 mortgage risk in Portugal, and that the bulk of that insurance is being administered through three lenders. If Banco de Portugal lifts the stress premium toward 3 points before the summer, those three lenders will be the first to feel the new affordability ceiling — and the first test of how compatible the Government's housing push and the regulator's risk frame really are.

Sources: ECO (24 April 2026); Diário da República despacho signed by Finance Minister Joaquim Miranda Sarmento (20 April 2026); Banco de Portugal Relatório de Estabilidade Financeira; Idealista News; Público.