Recent reporting summarises that the limitation period (prescription) for most tax debts in Portugal is eight years, but the start date depends on the tax type: it may be counted from the tax event (e.g., IMT), from the end of the year the tax occurred (IRS, IRC), or from the start of the following calendar year for certain withholdings. The nuance matters for expats with past property, income or withholding issues — older liabilities may already be time‑barred depending on when they arose.




