Portugal Ends a 14-Year VAT Dispute: 6% on Rehabilitation Anywhere Inside an ARU
Law 48/2026, published on 17 August, confirms renovation works in a Portuguese ARU carry 6% VAT rather than 23% — but reclaims reach back only to January 2022.
A law published in Portugal's Diário da República on 17 August 2026 settles a question that has generated tax assessments for more than a decade: renovation works carried out inside a delimited Urban Rehabilitation Area qualify for the reduced 6% VAT rate whether or not the municipality has separately approved a rehabilitation operation. The difference between the reduced rate and the standard 23% rate is 17 percentage points of the entire works budget, applied retroactively to contracts signed since 2009.
The two acronyms at the centre of it
A Portuguese municipality can delimit an ARU — an área de reabilitação urbana, essentially a map — and can separately approve an ORU, the operação de reabilitação urbana that programmes what happens inside it. The tax authority had read the VAT code to require both, and issued assessments at 23% against owners and contractors whose works sat inside an ARU where no ORU had been approved. Because the ORU is a municipal act entirely outside the taxpayer's control, identical renovations in neighbouring towns could attract different VAT rates. Parliament passed the correction as an authentic interpretation — a device that declares what the original 2009 law always meant — approved unanimously in general debate on 3 July 2026 and in the final vote on 17 July.
Why the money only reaches back to 2022
The retroactive scope and the recoverable scope are not the same thing, and this is where the practical answer sits. The Ordem dos Contabilistas Certificados issued an opinion on 17 August noting that VAT is subject to a four-year limitation period, so corrections apply only where the tax became chargeable from 1 January 2022 onward. Anything older is time-barred regardless of what the interpretation says. Relief is therefore available mainly to taxpayers with an open audit or a live court case, and to periods still inside the window. Contractors that charged 23% must refund the difference to the developer; developers that self-assessed correct their own returns.
The market this lands in
Glopra's Portuguese snapshot of 17 August 2026 shows a national average of $2,659 per square metre, up 17.8% over twelve months — one of the fastest annual gains among the 70 markets it tracks — with a bubble score of 84, inside the high band. Lisbon averages $6,957 per square metre on a gross rental yield of 3.76%. Standardised transaction costs run at 11.2%, and the effective rental tax rate on Glopra's non-resident case is 10%.
In a market at 3.76% gross yield in the capital, renovation economics decide whether an older building is worth buying at all. Shaving 17 points off the VAT on a works budget changes that calculation materially — and Portugal's older housing stock is concentrated precisely in the ARUs where the dispute arose. The clarification does not add supply by itself, but it removes a reason not to renovate.
Read the boundary, not the headline
The reduced rate applies to works, inside a delimited ARU, within the defined periods. It is not a general 6% rate on Portuguese construction, and the January 2022 limitation cuts off most historic claims. Anyone with an assessment in progress should have it reviewed against the new text by a Portuguese tax adviser; this article is a summary of a legal change, not tax advice.
Sources: idealista/news Portugal (17 Aug 2026) https://www.idealista.pt/news/imobiliario/construcao/2026/08/17/77177-nova-lei-clarifica-regras-do-iva-de-6-na-reabilitacao-urbana; idealista/news Portugal, OCC opinion (18 Aug 2026) https://www.idealista.pt/news/imobiliario/construcao/2026/08/18/77187-iva-a-6-na-reabilitacao-so-abrange-imposto-exigivel-desde-2022; Observador (17 Aug 2026) https://observador.pt/2026/08/17/nova-lei-em-diario-da-republica-clarifica-regras-do-iva-de-6-na-reabilitacao-urbana/