Socialist Party Proposes Full Capital Gains Tax Exemption for Primary Residence Sales—But Only for Residents

José Luís Carneiro, secretary-general of Portugal's Socialist Party (PS), used his closing speech at the party's 25th national congress on Sunday to propose a sweeping change to capital gains tax policy: full exemption on profits from the sale of a primary residence, provided the property was used for permanent habitation. The proposal, aimed at middle-class homeowners facing affordability pressures, would mark the most significant housing tax reform since the controversial elimination of non-habitual resident (NHR) benefits in 2024.

Under current law, Portuguese tax residents who sell property and reinvest the proceeds into another primary residence within 36 months can defer capital gains tax. Non-residents, however, are explicitly excluded from this reinvestment exemption—a distinction the tax authority (AT) clarified in binding guidance last year. Carneiro's proposal would go further: it would eliminate the tax entirely for qualifying sales, but only for residents. Non-residents would remain subject to the standard 28% flat rate on gains, with no deferral or exemption available.

The timing is deliberate. Portugal's housing market set a record €41.2 billion in sales volume in 2025, even as foreign buyers began pulling back in response to tighter visa rules and the end of the NHR regime. Domestic buyers, meanwhile, face a paradox: their homes have appreciated significantly, but selling triggers a tax bill that erodes the capital needed to re-enter an even more expensive market. Carneiro's proposal addresses this lock-in effect for residents, while reinforcing the government's pivot away from policies perceived as favouring foreign capital.

What the Proposal Actually Does

Carneiro did not release legislative text, but party officials told Público the exemption would apply to sales of properties that served as the seller's habitual residence—defined as the address registered with tax authorities and used for at least 12 consecutive months prior to sale. The key conditions are straightforward: the seller must be a Portuguese tax resident at the time of sale, and the property must have been their primary home, not an investment or second residence.

Crucially, there would be no reinvestment requirement. Under current law, even residents must reinvest sale proceeds into another primary residence to defer the tax. Carneiro's proposal scraps that condition entirely. A retiree downsizing from a four-bedroom house in Cascais to a small apartment in the Algarve would owe no capital gains tax, even if the sale generated a €300,000 profit. The same retiree, if classified as a non-resident for tax purposes, would owe €84,000 (28% of the gain).

The policy is designed to facilitate lifecycle housing transitions—young families upsizing, older couples downsizing, workers relocating for jobs—without penalising mobility. But it also sharpens the divide between residents and non-residents, a recurring theme in Portuguese housing policy since the government began dismantling expat-friendly tax regimes in 2023.

The Expat Impact: Locked Out by Design

For non-resident property owners—retired EU nationals who spend part of the year in Portugal, remote workers maintaining a foreign tax residence, or investors holding Portuguese real estate in offshore structures—the proposal offers nothing. They would continue to face the 28% flat rate on capital gains, with no deferral, no exemption, and no relief for inflation or holding period. If Carneiro's proposal becomes law, the gap between resident and non-resident treatment would be the widest in the EU.

This is not an oversight. Portuguese policymakers across the spectrum now view housing tax policy as a tool for rebalancing the market away from foreign capital and toward domestic affordability. The PS proposal fits neatly into this framework: it delivers tax relief to Portuguese families without extending the same benefit to the non-resident buyers who, in the political narrative, drove prices out of reach in the first place.

The practical consequence for expats is clear. Those who moved to Portugal under the NHR regime and later obtained tax residency will benefit—they are residents, and if they sell a primary residence, they would owe no capital gains tax. But anyone who maintained ties to their home country, kept their tax residence abroad, or structured their Portuguese property ownership through a non-resident entity will find the tax burden unchanged or worse. The lock-in effect—where selling is prohibitively expensive—becomes even more pronounced.

Political Feasibility and Next Steps

The PS does not control the government or parliament, so Carneiro's proposal is aspirational rather than legislative. But it serves a clear strategic purpose: positioning the Socialists as the party of housing affordability, while forcing Prime Minister Luís Montenegro's centre-right coalition to either adopt the policy or explain why it opposes tax relief for middle-class homeowners. With housing consistently polling as voters' top concern, that is not a debate Montenegro can easily avoid.

The government has already implemented a package of housing tax measures, including VAT reductions on home purchases and expanded deductions for mortgage interest. But those policies were constrained by EU state aid rules and delivered modest savings—typically a few thousand euros on a median-priced home. Carneiro's capital gains exemption, by contrast, would save residents tens or even hundreds of thousands of euros on high-value sales.

Whether the government adopts the policy depends on two factors: the fiscal cost and the political optics. The revenue loss would be significant—capital gains tax on residential property brought in an estimated €600 million in 2025—but the government could argue the exemption unlocks housing supply by encouraging turnover, which in theory moderates prices. The harder question is whether Montenegro wants to hand the PS a policy victory heading into the next election cycle.

What This Means for the Market

If enacted, the exemption would likely accelerate transactions among Portuguese residents, particularly older homeowners sitting on large unrealised gains. That could increase supply in desirable coastal and urban areas, where long-term residents have been reluctant to sell due to tax consequences. More supply, all else equal, should temper price growth—though Portugal's chronic undersupply and demographic pressures mean the effect would be marginal rather than transformative.

For non-residents, the message is unambiguous: Portugal is no longer competing for foreign capital in the residential market. The policy mix—no NHR, higher property transfer taxes, stricter visa rules, and now a capital gains regime that explicitly favours residents—signals a strategic pivot toward protecting domestic buyers. That does not mean foreign buyers are unwelcome, but it does mean they will pay a premium in taxes and face fewer exit options if they choose to sell.

Whether Carneiro's proposal becomes law or remains a campaign talking point, the direction of travel is clear. Portuguese housing policy is being rewritten to favour residents over investors, locals over foreigners, and long-term occupation over short-term capital appreciation. For expats with property in Portugal, the window for tax-advantaged exits is closing—and the cost of staying may be rising faster than the value of their homes.

Related reading: Selling Your House in Portugal 2026 — The Escritura Pública, the Anexo G, the Mais-Valias Rules, and the Solicitador Process for Foreign Sellers

Background: See the property-tax guide covering IMI, AIMI, IMT and capital-gains for 2026.

Related Coverage

• Portugal's Tax Authority Confirms Non-Residents Cannot Claim Capital Gains Reinvestment Exemption
• Portugal's New Housing Tax Package Promises Relief, but EU Rules Limit the Boldest Measure
• Portugal's Housing Market Shatters All Records in 2025 as Foreign Buyers Pull Back

Background: See BA Glass's 41% acquisition of Tunisia's Sotuver. On the housing-tax side, our read on the Pacote Fiscal Habitação promulgated by Seguro on 12 May (IVA at 6% on moderate-price construction, IRS on moderate rents 25%→10% through 2029, non-resident IMT fixed at 7.5%, tenant deduction €900/€1,000) sets the latest reference. On the affordable-housing tax-package enforcement rail, our 21 May Decreto-Lei 97/2026 read — Article 10.º lands a 10% IMT surcharge on the valor tributável for any IVA-6% homebuyer who fails to designate the property as primary residence inside six months or vacates inside the first 12 months of occupation, with carve-outs only for marriage, divorce and new dependents sets the latest reference. On the property-registry and IRN online-issuance architecture, our 2026 Certidão Permanente de Registo Predial guide — the IRN's fully-online Predial Online flow, the descrição-vs-matriz identification, the multi-property batch request, Cartão de Cidadão and Chave Móvel Digital authentication, the access-code verification model and the conservatória-free issuance that replaces the counter certidão for the standard cases sets the latest reference. For the household-side mechanics of the annual property tax, our 2026 Paying-IMI practical guide — how the Imposto Municipal sobre Imóveis actually runs in Portugal, the 0.3% to 0.45% municipal-band rate every council votes inside, the VPT in the Caderneta Predial, the May / August / November installment calendar, the IMI Familiar deduction up to €140 for households with three-plus dependents, the three-year primary-residence exemption under €125,000 VPT and the €600,000 AIMI threshold on aggregate VPT sets the latest reference.