# How many days make you tax resident in Portugal? > How Portugal decides tax residency: 183 days More than 183 days, consecutive or not, in any 12-month period beginning or ending in the year concerned, the tax year (1 January – 31 December), the tests that catch you regardless of days, and Autoridade Tributária e Aduaneira (Portal das Finanças)'s own page — checked 2026-08-18. Source: https://doastretch.com/tax-days/portugal/ Portugal · tax residency · 2026 183 days Tax residency threshold checked 2026-08-18 · info.portaldasfinancas.gov.pt 183 days More than 183 days, consecutive or not, in any 12-month period beginning or ending in the year concerned makes you tax resident in Portugal — but the day count is only the test people know about. Next step **How we know** Figures are as Autoridade Tributária e Aduaneira (Portal das Finanças) publishes them at info.portaldasfinancas.gov.pt, checked 18 August 2026. Sources are listed further down the page. ## How the counting works Day-counting convention as published in art. 16 CIRS: a day of presence is 'any day, complete or partial, that includes an overnight stay' in Portuguese territory. Residence starts on the first day of the period of presence, except where the person was resident on any day of the previous year, in which case from the first day of the year; it ends on the last day of presence, subject to the exceptions in arts. 14 and 16. Worldwide taxation of residents rests on art. 15 CIRS, which was not separately retrieved in this run. The IFICI page states the 20% rate applies to income from the listed qualifying activities; the treatment of foreign-source income is not addressed on that page. ## Why the day count is the part you can control Ties, homes and intentions are argued after the fact; days are a record. That is why the first thing an adviser asks for is a list of the days you were in the country — and why reconstructing it from boarding passes and photos a year later is a bad afternoon. Log each stay as it happens and the tally is simply there, with the dates that produced it. If you are moving to Portugal to work remotely, the [Portugal digital nomad visa page](https://doastretch.com/nomad-visa/portugal/) covers the permission side. ## Sources - [info.portaldasfinancas.gov.pt](https://info.portaldasfinancas.gov.pt/pt/informacao_fiscal/codigos_tributarios/cirs_rep/Pages/irs16.aspx) — official source, checked 2026-08-18 - [info.portaldasfinancas.gov.pt](https://info.portaldasfinancas.gov.pt/pt/informacao_fiscal/codigos_tributarios/bf_rep/Pages/EBF58A.aspx) (official), retrieved 2026-08-18 ## Questions people ask about Portugal tax residency **How many days can you spend in Portugal before becoming tax resident?** 183 days More than 183 days, consecutive or not, in any 12-month period beginning or ending in the year concerned makes you tax resident in Portugal, and residents are taxed on worldwide income. Days are not the only route in: Article 16 CIRS also treats as resident someone present for fewer than 183 days who, on any day of that period, has a dwelling in Portugal in conditions suggesting a current intention to keep and occupy it as habitual residence; also crew of ships/aircraft serving entities resident, seated or effectively managed in Portugal on 31 December, and people performing public functions abroad in the service of the Portuguese State. Checked 18 August 2026 against info.portaldasfinancas.gov.pt. **When is Portugal's tax year?** 1 January – 31 December. Day counts are measured against that year unless the rule names a different period — here, More than 183 days, consecutive or not, in any 12-month period beginning or ending in the year concerned. **Are residents of Portugal taxed on worldwide income?** Yes — once you are tax resident in Portugal, worldwide income falls in scope, subject to double-tax treaties. IFICI — Incentivo Fiscal à Investigação Científica e Inovação (art. 58.º-A EBF, the NHR successor): special IRS rate of 20% on net income from qualifying activities for 10 consecutive years from the year of registration as resident, for people who were not resident in Portugal in any of the previous five years. **Is there a special tax regime for people moving to Portugal?** IFICI — Incentivo Fiscal à Investigação Científica e Inovação (art. 58.º-A EBF, the NHR successor): special IRS rate of 20% on net income from qualifying activities for 10 consecutive years from the year of registration as resident, for people who were not resident in Portugal in any of the previous five years. Conditions and time limits apply; the official page below is the place to check them. **How does Stretch count tax days for Portugal?** Every stay you log feeds the tally: Stretch counts the days you were present against the 183-day threshold in the right window, so "how long was I actually there?" is answered before your accountant asks. Tax-day tallies are part of Stretch+; the day counter and the alerts are free forever. Tax days elsewhere - [United States](https://doastretch.com/tax-days/united-states/) 183d - [Canada](https://doastretch.com/tax-days/canada/) 183d - [Mexico](https://doastretch.com/tax-days/mexico/) tests - [Brazil](https://doastretch.com/tax-days/brazil/) 183d - [Costa Rica](https://doastretch.com/tax-days/costa-rica/) 183d - [Panama](https://doastretch.com/tax-days/panama/) 183d - [Guatemala](https://doastretch.com/tax-days/guatemala/) 183d - [Dominican Republic](https://doastretch.com/tax-days/dominican-republic/) 182d - [All countries →](https://doastretch.com/tax-days/) Portugal, the rest of it - [Portugal's digital nomad visa](https://doastretch.com/nomad-visa/portugal/) - [Who needs a visa for Portugal](https://doastretch.com/visa/to/portugal/) - [All visa rules by passport →](https://doastretch.com/visa/) Stretch is a tracker, not legal advice, and this is not tax advice. Visa and tax rules change and are applied by the authority, not by an app — every figure here shows its source and the date we checked it. Checked 2026-08-18; confirm on the official page before you apply or file.