The Portuguese Tax Authority (AT) clarified a crucial loophole in May 2026 that allows young first-time buyers to claim tax exemptions even when they hold a share in an undivided inheritance containing property. However, the Ordem dos Notários (Notaries Chamber) is now pushing for retroactive refunds to those who already paid taxes under the old, mistaken interpretation — a move that could return tens of thousands of euros to affected buyers.
Why This Matters:
• Young buyers who paid IMT (property transfer tax) and Stamp Duty despite qualifying for the "IMT Jovem" scheme may be entitled to refunds via administrative appeals.
• The error stemmed from automated tax systems that flagged any inheritance link, regardless of whether the property had been divided.
• For a home valued at €300,000 to €400,000, the potential refund could exceed €10,000 — equivalent to several months' rent in Lisbon or Porto.
The Tax Trap That Caught Young Buyers Off Guard
Since August 2024, the Portuguese government has offered full or partial exemptions from IMT and Stamp Duty for residents aged 35 and under purchasing their first primary residence. The program applies to properties valued up to €330,539 (with partial relief extending to €660,982 as of 2026). By early 2025, more than 77,000 young people had used the scheme, saving over €77 M in taxes.
But a technical glitch in how the tax authority interpreted ownership created a barrier. When a young buyer's taxpayer number appeared in the registry as a co-heir of an undivided estate — even if no actual partition had occurred — the system automatically denied the exemption. This happened because the AT initially treated any recorded interest in inherited property as disqualifying ownership, regardless of whether the heir had legal title to a specific unit.
Jorge Batista da Silva, the Bastonário (head) of the Ordem dos Notários, confirmed that the confusion forced many eligible buyers to pay taxes at closing. "The process was automatic. The taxpayer ID was linked to the undivided inheritance, and the AT's own system would not grant the benefit," he explained. Most buyers only discovered the problem days before signing the deed, leaving them no choice but to pay and attempt to restructure their mortgage to cover the unexpected cost.
What the Tax Authority's Clarification Actually Changes
On May 15, 2026, the AT issued a binding ruling (known as informação vinculativa) in response to a taxpayer's formal query. The conclusion: holding a fractional share in an undivided estate does not, by itself, constitute property ownership. Until the estate is formally divided through a legal partition, heirs possess only an abstract claim to a proportional share of the estate's total assets — not title to any specific property.
This interpretation aligns with Portuguese civil law, which distinguishes between ownership of an ideal quota (a percentage interest in the whole estate) and ownership of a specific asset (a titled share in a particular building or parcel). The former does not trigger the disqualification clause in the IMT Jovem legislation, which excludes anyone who "owns or has owned residential property" in the three years prior to purchase.
Critically, the ruling requires that the inheritance remain undivided at the time of the deed. If the estate is partitioned and the heir receives title to even a fraction of a property before closing on their new home, the exemption is lost.
While the binding ruling technically applies only to the individual who requested it, the AT has published it as guidance for similar cases, and notaries across the country are now applying the logic broadly.
The Financial Impact and What You Can Recover
The bastonário emphasized that the issue is not hypothetical. For a buyer purchasing a property valued at €350,000, the IMT bill under the standard rate structure would be approximately €12,500. Add Stamp Duty at 0.8%, and the total tax burden approaches €15,300 — enough to cover legal fees, furnishings, or several months of mortgage payments.
Batista da Silva stated he does not know how many buyers were affected, as most cases surfaced only at closing when notaries flagged the inheritance link. But he is categorical that those who paid taxes under the erroneous interpretation should file a reclamação graciosa (administrative appeal) with the AT to request reimbursement.
How to Claim Your Refund
The reclamação graciosa is a no-cost administrative procedure that allows taxpayers to challenge incorrect tax assessments. This is a standard process used frequently by residents in Portugal, with moderate success rates for well-documented cases. Here's the process:
Eligibility and Timing
You must file within 120 days of the tax payment, the official assessment notice, or — critically — from the date you became aware of the error. The May 2026 clarification may reset the clock for buyers who paid taxes in 2024 or early 2025 under the mistaken interpretation.
Where to File
Submit online via the Portal das Finanças (www.portaldasfinancas.gov.pt) under "Contencioso Administrativo e Judicial" > "Entregar Contencioso Administrativo" > "Reclamação graciosa." Alternatively, visit a local Serviço de Finanças (Tax Office) in person. For those unfamiliar with the system, tax advisors (consultores fiscais) and civil law attorneys can assist; costs typically range from €150 to €500 depending on complexity. Free legal aid may be available through the Ordem dos Advogados (Bar Association) if you meet income criteria.
What to Include
Your appeal must specify the tax type (IMT and Stamp Duty), the amount paid, the date of the deed, and a clear explanation of why the tax was levied in error. Attach proof that you met all IMT Jovem criteria: age verification, confirmation that the property is your first and primary residence, and — crucially — documentation that the inheritance was undivided at the time of purchase (such as a notarial certificate or estate inventory showing no partition).
What Happens Next
The AT has four months to issue a decision. Based on similar administrative appeals, the typical decision timeline is 3-5 months once submitted. If the agency does not respond within four months, the appeal is deemed denied, and you can escalate to a recurso hierárquico (hierarchical appeal to a higher authority within the AT) within 30 days or file a judicial challenge (via civil court) within three months. If the appeal succeeds, the AT will refund the tax with interest for the delay.
What This Means for Current and Future Buyers
For anyone planning to buy in the coming months, the path is now clearer. If you are 35 or under, purchasing your first home for permanent occupancy, and you have a fractional interest in an undivided estate, you should qualify for the IMT and Stamp Duty exemption — provided the estate remains undivided when you sign the deed.
However, the safest approach is to confirm your status with the AT before closing. You can request a non-binding consultation (consulta não vinculativa) or ask your notary to verify that your taxpayer record will not trigger an automatic exclusion.
For those who already paid, the window to recover those funds is open, but time-sensitive. The 120-day rule means that anyone who closed in early 2026 has until late summer 2026 to file. Buyers who paid in late 2024 may already be outside the standard 120-day window, but the publication of the binding ruling in May 2026 could provide grounds to argue that the clock starts from the date the correct interpretation became public — a position you should assert in your appeal.
Why Undivided Inheritances Are So Common
Portugal's inheritance system often leaves estates in limbo for years. When a parent or relative dies, their property automatically passes to all heirs as co-owners of the estate as a whole (co-proprietários), not as titled owners of specific assets. Formal partition — which requires notarial deeds, tax filings, and often family agreement — can be delayed by emotional, financial, or logistical obstacles.
Many young adults are therefore nominal heirs to a share of a family home or vacation property without ever intending to claim or occupy it. Until recently, this passive status could inadvertently block access to first-time buyer benefits, even though the heir had no practical control over the inherited asset.
The AT's May 2026 clarification removes that penalty, but only for those who act before the estate is divided. If you are in this situation and planning to buy, consult with your family and a notary to ensure the estate remains undivided until after your purchase closes.
The Bigger Picture on First-Time Buyer Support
The IMT Jovem scheme is part of a broader package introduced by the Portuguese government in 2024 to address the housing affordability crisis. In addition to tax relief, the program includes a public guarantee that allows banks to finance up to 100% of a property's value (up to €450,000) for buyers aged 35 and under, with the state covering up to 15% of the loan as collateral.
The initiative has been widely adopted: from August 2024 through early 2025, more than 77,000 young people had used the scheme, saving over €77 M in taxes. By the end of 2025, the program had expanded further, with additional approvals bringing the total supported transactions to a significant portion of first-time buyer activity.
But the confusion over inheritance has highlighted a recurring tension in Portuguese tax administration: rigid automated systems that cannot accommodate nuance. The AT's clarification is welcome, but it does not automatically reverse past decisions. That burden falls on individual buyers to file appeals and prove their case.
The Ordem dos Notários is urging the tax authority to take a more proactive stance — issuing blanket refunds to all buyers flagged for inheritance-related exclusions, rather than forcing each one to navigate the appeals process. So far, the AT has not indicated whether it will do so.
Action Checklist: What to Do Now
If you believe you were wrongly charged IMT or Stamp Duty, follow these steps:
Gather documents: Collect your deed, tax assessment notice, proof of age, confirmation of first residence status, and notarial certificate showing the estate was undivided at purchase.
Calculate your claim: Determine the exact IMT and Stamp Duty amounts paid (listed on your tax notice).
Determine your deadline: Count 120 days from payment date, assessment notice date, or May 15, 2026 (whichever favors you).
Consult an advisor (optional but recommended): Contact a tax advisor or attorney if your case is complex or if you are unfamiliar with Portuguese administrative procedures.
File your reclamação graciosa: Submit online via Portal das Finanças or in person at your local Serviço de Finanças.
Track your appeal: Note your submission reference number and follow up after 3-4 months if you have not received a response.
Prepare for next steps: If denied, decide whether to pursue a hierarchical appeal or judicial challenge within the prescribed timelines.
For now, if you believe you were wrongly charged IMT or Stamp Duty, the message is clear: act within 120 days, gather your documents, and file your appeal. The law is on your side, and the AT's May 2026 clarification provides the legal foundation for your case. The system will not correct itself, but it will respond to a properly documented challenge.
