Most guidance on Portuguese capital gains still describes a regime that no longer exists. The flat 28% rate for non-residents is gone, replaced by something that sounds worse — taxation at marginal rates up to 53% — and that is, in practice, better for every single non-resident seller.
Understanding why matters, because the exit is where a decade of careful underwriting either survives or does not. This article works through the arithmetic on a realistic Lisbon exit and quantifies the two things investors most often get wrong: the effective rate, and the cost of missing paperwork.
Key takeaways: Since the 2023 Budget Law, residents and non-residents share one regime: 50% of the gain enters IRS at marginal rates of 12.5% to 53%. The effective rate is capped at 26.5%, below the repealed 28% flat rate. Reinvestment relief remains unavailable on rental property. Undocumented improvements cost our example seller 5,250 €.
The regime after the 28% repeal
Since the 2023 Budget Law, residents and non-residents are subject to the same capital gains regime: 50% of the gain enters IRS and is taxed at the taxpayer's marginal rate. The autonomous 28% rate that previously applied to non-residents was repealed.
General IRS rates run from 12.5% to 53%, the top figure including the solidarity surcharge under article 68º-A of the IRS Code. The gain is subject to mandatory aggregation, which means it is folded into the taxpayer's overall calculation rather than taxed in isolation.
For non-residents, that aggregation carries a specific obligation: worldwide income must be declared so the tax authority can determine which marginal bracket applies. This causes understandable alarm and is widely misread. The declaration sets the rate. It does not make foreign income taxable in Portugal.
Citation capsule: Since the 2023 Budget Law, Portuguese property capital gains for both residents and non-residents are taxed on 50% of the gain at marginal IRS rates of 12.5% to 53%. The former 28% autonomous rate for non-residents was repealed, and gains are now subject to mandatory aggregation with worldwide income declared to establish the applicable bracket.
Why non-residents now pay less — always
Here is the part almost every guide gets backwards. Because only half the gain is taxed, the effective rate on the whole gain is half the marginal rate. At the very top of the IRS scale — 53%, including the solidarity surcharge — the effective rate is 26.5%. The old flat rate was 28%, charged on the entire gain.
The arithmetic is therefore unambiguous: no non-resident pays more under the current regime than under the old one. Even the highest-earning seller imaginable lands below the rate they would have paid before 2023, and a seller with modest other income can land far below it.
The trade-off is not the rate. It is the compliance burden and the loss of predictability. A flat 28% was knowable at purchase; a marginal rate depends on the seller's income in the year of sale, which introduces genuine planning risk into an exit a decade away.
How the gain is calculated
The taxable gain is not simply sale price minus purchase price. Four deductions apply, and investors routinely under-claim all four.
- Inflation coefficient — where the property was held more than 24 months, the acquisition value is adjusted upward by an official coefficient published annually. This is free money and is frequently ignored.
- Acquisition costs — IMT, stamp duty, notary and registration fees paid on purchase.
- Improvement costs — documented works that added value, incurred in the last 12 years. Undocumented works are not deductible, no matter how real they were.
- Selling costs — estate agency commission, including VAT, and related transaction costs.
A worked exit
Take a Lisbon apartment bought in 2016 for 150,000 €, renovated for 30,000 €, and sold in 2026 for 280,000 € through an agent at 5% plus VAT.
| Line | Amount |
|---|---|
| Sale price | 280,000 € |
| Acquisition value (150,000 € × 1.15 coefficient) | −172,500 € |
| Acquisition costs (IMT, stamp duty, notary) | −6,000 € |
| Documented improvements | −30,000 € |
| Agency commission (5% + VAT) | −17,220 € |
| Taxable gain | 54,280 € |
| Enters IRS (50%) | 27,140 € |
| Tax at 35% marginal | 9,499 € |
Note: the 1.15 inflation coefficient is illustrative. The exact figure for each acquisition year is published annually by Portaria — check the current table before modelling a real exit.
Under the old regime, that same 54,280 € gain would have cost a non-resident 28% of the full amount: 15,198 €. The current regime charges 9,499 € at a 35% marginal rate — a saving of 5,699 € on an identical transaction. Model your own exit with the capital gains tax calculator.
What your paperwork is actually worth
The single most expensive habit in Portuguese property investment is not keeping invoices. In the example above, the 30,000 € renovation reduces the taxable gain by exactly that amount — but only if it is documented with proper invoices in the owner's name.
Losing the renovation invoices costs 5,250 €. Losing the acquisition-cost records as well takes the total penalty to 6,300 € — on a transaction where nothing about the property, the price or the tax rate has changed. It is the highest-return administrative task in the entire holding period.
Three rules follow. Keep every invoice in the owner's name, not a spouse's or a company's. Keep them for at least 12 years, because that is the improvement window. And record acquisition costs at purchase, when the documents are in front of you, rather than reconstructing them a decade later. See our renovation ROI guide for how this interacts with a value-add strategy.
The reinvestment trap
Reinvestment relief is the most misunderstood provision in the Portuguese capital gains regime, and the misunderstanding is expensive.
The relief applies to the sale of own permanent housing where the proceeds are reinvested in another own permanent home, and it is available to residents only. A non-resident selling a Portuguese property cannot use it at all.
But the more common error is the one residents make. An investor selling a rental property cannot claim reinvestment relief either — not because of residency, but because the property sold was never their permanent home. Buying another rental with the proceeds does not defer anything. The gain crystallises in full at sale.
For a portfolio builder, that has a direct consequence: every rotation is a taxable event. Selling one property to buy a better one costs roughly 17.5% of the gain at a 35% marginal rate, and that friction has to clear before the new asset is an improvement. Our guide to building a Portuguese rental portfolio covers when rotation is worth the tax drag.
The pattern we see on exits is that investors model the purchase in obsessive detail and the sale not at all. They will argue over 15 basis points of spread and then discover at completion that a decade of undocumented improvements is worth nothing, that their marginal rate that year happens to be high because of a bonus, and that the rotation they planned carries a five-figure toll. The exit is half the return. It deserves the same spreadsheet as the entry.
Sources
- PwC Portugal, IRS — Guia Fiscal 2026, retrieved 2026-08-27, https://www.pwc.pt/pt/pwcinforfisco/guia-fiscal/2026/irs.html
- Vida Económica, IRS — Tributação das mais-valias imobiliárias auferidas por não residentes, retrieved 2026-08-27, https://www.grupovidaeconomica.pt/pt-pt/irs---tributacao-das-mais-valias-imobiliarias-auferidas-por-nao-residentes-
- HVR Business Consulting, Mais-Valias Imobiliárias IRS 2026 — Cálculo, Taxas, Reinvestimento, retrieved 2026-08-27, https://www.hvrbusinessconsulting.com/pt/blog/mais-valias-imoveis-irs-2026
- Doutor Finanças, Simulador Mais-Valias Imóveis, retrieved 2026-08-27, https://www.doutorfinancas.pt/ferramentas/simulador-mais-valias-imoveis/
- ECO, Fisco trava benefício fiscal a emigrantes na venda de casas em Portugal, 24 March 2026, retrieved 2026-08-27, https://eco.sapo.pt/2026/03/24/fisco-trava-beneficio-fiscal-a-emigrantes-na-venda-de-casas-em-portugal/
Frequently asked questions
How much capital gains tax do non-residents pay on Portuguese property?
Since the 2023 Budget Law, non-residents follow the same regime as residents: 50% of the gain enters IRS, taxed at marginal rates from 12.5% to 53% including the solidarity surcharge. The old 28% autonomous rate was repealed. The effective rate therefore ranges from 6.25% to 26.5% of the gain.
Did the repeal of the 28% rate make non-residents better or worse off?
Better off, in every case. Because only half the gain is taxed, the effective rate tops out at 26.5% even at the highest 53% marginal rate. That is below the previous flat 28% on the full gain, so no non-resident pays more under the current regime.
What can I deduct from a Portuguese property capital gain?
The acquisition value adjusted by the official inflation coefficient where held more than 24 months, acquisition costs such as IMT, stamp duty and notary fees, documented improvement costs from the last 12 years, and selling costs including agency commission. Undocumented works cannot be deducted.
Can I avoid capital gains tax by reinvesting in another property?
Only in narrow circumstances. Reinvestment relief applies to the sale of own permanent housing reinvested in another permanent home, and only for residents. An investor selling a rental property cannot use it regardless of residency, because the property sold was never their permanent home.
Do non-residents have to declare worldwide income in Portugal?
For the purpose of setting the rate, yes. Because the gain is subject to mandatory aggregation, a non-resident must declare worldwide income so the tax authority can determine the applicable marginal bracket. The declaration establishes the rate; it does not make foreign income taxable in Portugal.