Selling Portuguese Property Before Emigrating 2026: Mais-Valias, Reinvestment Exemption and IMT

What changes in 2026: AT integrates Casa Pronta with Portal das Finanças

The 2026 update streamlines the link between Casa Pronta (the one-stop conveyancing portal run by Instituto dos Registos e do Notariado, IRN) and the Portal das Finanças. Sale data flows automatically into AT systems, including the date of escritura, the price declared and the buyer’s NIF. The result is faster pre-fill of Anexo G but tighter scrutiny of declared values vs valor patrimonial tributário (VPT) and market evidence. Selling before emigrating remains tax-efficient under the residente regime, where only 50% of mais-valias is taxable on real estate (article 43(2) CIRS), and reinvestment relief (article 10(5) CIRS) can defer or eliminate gain on the own permanent dwelling (habitação própria permanente).

For non-residents the rules are tougher: 100% of the gain is taxable from 2023 onwards under the post-Hollmann reform, but the same progressive rates apply (instead of the flat 28% pre-reform). EU/EEA non-residents may aggregate the gain to their other Portuguese-source income at progressive rates, which is often advantageous.

Mais-valias: how the gain is calculated

The taxable gain is the difference between sale price and acquisition value, indexed for inflation under the official coefficient (coeficientes de desvalorização monetária) published yearly in Portaria. Costs of acquisition (escritura, IMT, stamp duty, registo predial), capital improvements within the last 12 years (with invoices and obras documented at AT), and direct sale costs (agência imobiliária commission, certificação energética) are deducted. The result is split by ownership share between joint owners.

For residents, only 50% of the net gain is taxable and aggregated to other income at progressive rates 13.25%-48% plus solidarity (2.5%-5%). For non-residents (post-2023), 100% is taxable but with the same progressive scale on the gain alone, or aggregated for EU/EEA. The flat 28% non-resident option remains for those who prefer it but is rarely better.

Reinvestment exemption (own permanent dwelling)

Article 10(5) CIRS exempts the gain on sale of habitação própria permanente when the proceeds are reinvested in another own permanent dwelling located in Portugal, in another EU/EEA Member State, or (since 2023) in any country with which Portugal has effective tax-information exchange. The reinvestment must occur in the 24 months before sale or 36 months after. Mortgage repayment on the new home counts toward reinvestment, with limits.

Practical conditions: the seller must have been resident in the dwelling at the time of sale, the new dwelling must become own permanent dwelling within 12 months of acquisition, and the reinvestment must be declared on Anexo G of Modelo 3 in the year of sale. If reinvestment is partial, the exemption is proportional. A second exemption (article 10(13) CIRS) applies for taxpayers above 65 reinvesting in qualifying retirement products or PPRs.

IMT, stamp duty and registo predial — buyer-borne costs

Selling before emigrating: timing and process

The single biggest tax-saver is selling while still a Portuguese resident, especially when reinvestment relief is available. Once you become non-resident the 50% reduction is lost (post-2023 the gain is fully taxable for non-residents, though aggregable for EU/EEA). Plan the escritura before formal departure if possible — a few days can make the difference.

The sale process under Casa Pronta typically takes 4-8 weeks: certidão permanente from registo predial, certidão matricial from AT, certificação energética, ficha técnica de habitação for post-2004 buildings, and the cancelamento de hipoteca if a mortgage is in place. The escritura is signed at a notary or directly at the Casa Pronta one-stop counter. Funds clear via cheque visado or SEPA transfer.

Selling by power of attorney from abroad

If you have already left Portugal, sale by procuração is straightforward. Sign a notarial power of attorney at a Portuguese consulate (apostille not needed for consular acts) or at a foreign notary with Hague apostille. The procuração is registered at the Portuguese notary or Casa Pronta. The attorney-in-fact can sign the escritura, receive funds and file Anexo G on your behalf.

Funds repatriation: SEPA from a Portuguese bank to a foreign account is straightforward up to €15,000 per transfer; above that, banks request supporting documentation (certidão de escritura, NIF, foreign account ownership). For non-EU destinations, FATCA/CRS reporting applies but does not block the transfer. Allow 1-3 business days for SEPA, 3-5 days for SWIFT.

Common mistakes that increase the tax bill

Selling as non-resident when residence still possible. Lose the 50% reduction and reinvestment relief on own permanent dwelling. Plan the escritura before the residency switch.

Not declaring obras. Capital improvements not recorded at AT are not deductible. Submit invoices and Modelo 1-IMI declarations of value increase before sale.

Missing the reinvestment 24/36-month window. Even one day late voids the exemption. Diary the deadline and over-document the new own permanent dwelling status.

Forgetting cancelamento de hipoteca. The mortgage must be discharged at completion or shortly after. The bank issues a distrate which is registered at registo predial — €50-100 fee.