The Tax Authority (Autoridade Tributária e Aduaneira or AT) has ruled that delays in municipal licensing do not justify extending the 36-month deadline for reinvesting capital gains from a primary residence. This means taxpayers who fail to complete a new home purchase within the legal timeframe due to bureaucratic delays will still face Personal Income Tax (Imposto sobre o Rendimento de Pessoas Singulares or IRS) on those gains. Tax-paying residents should note that the AT maintains a strict interpretation of the law regardless of external delays.
Tax Authority refuses capital gains extensions despite licensing delays
Tuesday, 24 March 2026AI summary
Context & Explainers
The IRS withholding tables are government-published schedules used by employers, pension payers and other payers to calculate how much personal income tax (personal income tax (Imposto sobre o Rendimento das Pessoas Singulares) — IRS) must be deducted from each pay period. They take into account gross pay, pay frequency, marital status and dependents; updates (usually published annually or when the budget changes) affect your monthly take-home pay and are reconciled with your annual tax return (Modelo 3).
Capital gains (mais-valias) are the profits earned from selling an asset, such as a home, for a higher price than it was bought. In Portugal, residents can often avoid paying tax on these gains if they reinvest the full sale proceeds into a new primary residence within 36 months. The Tax Authority (Autoridade Tributária) recently confirmed this deadline is absolute and does not account for external delays like slow building permits.
