How to call AT (Autoridade Tributaria e Aduaneira) (Portugal) from abroad

+351 21 720 6707

If you need to reach AT while living or travelling outside Portugal, domestic toll-free and short codes often will not connect. International calling rates to Portugal (country code +351) can also be high on standard mobile plans. It is currently 10:16 PM in Portugal, which adds another challenge when trying to call during business hours.

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Phone numbers

AT International Line
+351 21 720 6707
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About AT

AT is the relevant tax or public-finance authority in Portugal. People usually call about returns, payments, refunds, notices, and tax identification issues.

WorldDial lets you dial the official international or geographic number for AT directly from your browser, no app download, no local SIM card, at clear per-minute rates. Always confirm the number on AT's official website before calling. Contact details change. Always verify the official phone number and hours on the institution's own website before calling. This page is general guidance, not legal or official advice.

Why calling from abroad is difficult

✗Toll-free and short-code numbers often do not work from outside the country
✗International rates to Portugal (country code +351) can be very high on standard mobile plans
✗Chat and messaging apps cannot reach institutions that only answer dedicated phone lines
✗Time zone differences make it harder to call during office hours, It is currently 10:16 PM in Portugal
✗Finding the correct international or geographic number, rather than the domestic toll-free, takes research

Common reasons to call AT

Filing or amending tax returns in PortugalPayment plans, balances owed, and outstanding noticesTax residency and non-resident filing questionsWithholding tax and refund status enquiriesTax identification number (TIN/NIN) issuesPenalties, appeals, and audit correspondence

How to call AT with WorldDial

1
Create a free WorldDial account
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2
Add credit from $1
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3
Dial the number
Enter +351 21 720 6707 in the dialer and press call.
4
Your call connects
Your call connects directly through your browser. Pay only for the minutes you use.

Practical tips

💡Confirm the official number on AT's website before calling
💡Have your reference number, ID, and relevant documents ready before dialling
💡It is currently 10:16 PM in Portugal. Best time to call is 10-11 AM local time in Portugal.
💡Dial from your browser with WorldDial, no installation, no SIM swap required
💡Note the agent's name and call reference number for follow-up

Frequently asked questions

Can I call AT from abroad?

Yes, most agencies and banks publish an international or geographic line that works from overseas. WorldDial lets you dial it from your browser at clear per-minute rates. Contact details change. Always verify the official phone number and hours on the institution's own website before calling. This page is general guidance, not legal or official advice.

Do toll-free numbers work internationally?

Usually not. Toll-free, freephone, and many short codes only work domestically within Portugal. Use the official geographic or international number listed on the institution's website.

What is the best time to call AT?

It is currently 10:16 PM in Portugal. Best time to call is 10-11 AM local time in Portugal. Calling at opening time avoids the longest wait queues.

Do I need to install an app?

No. WorldDial runs entirely in your browser. Sign up with Google or email, add credit from $1, and dial straight away, no download required.

How do I find the right international phone number for AT?

Visit the official website and look for a 'Contact' or 'Call us' section. Find a number that starts with +351 (Portugal's country code) or is labelled 'international'. Enter it in WorldDial's dialer in full international format.

How much does it cost to call Portugal from abroad with WorldDial?

WorldDial charges per-minute rates starting from $0.02-$0.10/min for calls to Portugal. This is typically far cheaper than standard international calling plans. View the full rate table on the WorldDial Rates page. No subscription, pay only for the minutes you use.

I need urgent help, can I call AT from abroad?

Yes. Most agencies have an international or overseas helpline. Check the official website for the number, then dial it through WorldDial from your current location.

Is WorldDial affiliated with AT?

No. WorldDial is an independent browser-based calling service. We are not a government body, bank, or agent of AT. This informational page is at https://www.worlddial.app/call-autoridade-tributaria-portugal-from-abroad.