Austrian tax residency rules: the 183-day test and the Wohnsitz test

What Austrian tax residency decides

Most people arrive assuming Austria counts days, and that staying under 183 days a year keeps them out of the net. Austria looks for a home first. A flat you keep and can use makes you tax resident from the day it’s yours, whatever the day count says.

Austrian income tax law splits people into two groups, according to the government’s business service portal page on income tax liability (in German). People with unbeschränkte Steuerpflicht (unlimited tax liability) are taxed in Austria on everything they earn, at home and abroad. People with beschränkte Steuerpflicht (limited tax liability) are taxed only on certain income with an Austrian connection.

Two tests decide which group you’re in, and meeting one is enough. Neither looks at your nationality, your employer, or whether you’ve registered your address on a Meldezettel (confirmation of registered address). Registration is a separate administrative duty; the tax question turns on where you actually live.

The Wohnsitz test: having a home you can use

You have a Wohnsitz (tax domicile: a home you can use) wherever you hold a flat or house under circumstances suggesting you’ll keep it and use it. The finance ministry’s income tax guidelines (in German) put the weight on whether you can actually use the place, not on whose name is on the lease or the deed.

Factor	Effect on the Wohnsitz test
You rent or own a flat, or a relative’s spare room is permanently available to you	Counts, even if you rarely stay there
A holiday let or hotel booked for a fixed, limited stay	Doesn’t count on its own
You hold a legal right to a property but have no practical way to use it	Doesn’t create a Wohnsitz
The home is your main residence, or only a secondary one	Makes no difference
You haven’t registered the address	Makes no difference; registration isn’t part of the test

There’s no minimum number of nights, and the home doesn’t have to be your main one. A flat kept available year-round for occasional stays is enough.

That catches a group who often assume they’ve left. For someone who moves abroad for work but keeps their Austrian flat furnished and ready, the flat alone probably keeps them fully liable in Austria, however few nights they spend in it (and whether the other country also claims them is a separate, treaty question).

TIP.
Registering your address and becoming tax resident are separate questions. Deregistering when you leave doesn’t end a Wohnsitz if you keep a flat you can still use, and the tax office looks at the home itself rather than the registration record.

The habitual-abode test, often shortened to “the 183-day rule”

Without a home here, Austria can still tax your worldwide income once you’re present long enough that it counts as your gewöhnlicher Aufenthalt (habitual abode). The same government portal puts the line at six months: after six months in Austria, unlimited liability applies in every case, and it applies retroactively, back to the first day of the stay.

The shorthand gets two things wrong, and they’re worth keeping apart:

• The law says six months, measured across the stay. “183 days” is a fair approximation of six months, but the law doesn’t count days within a calendar year. Its wording ties the six months to the stay itself, so a stay from October to May reads as more than six months even though neither calendar year holds 183 days of it.
• Tax treaties have their own 183-day test. That one is a genuine day count, and it decides which country may tax a particular salary. It’s a different question from whether you’re an Austrian tax resident at all, and both tests can apply to the same cross-border case.

Short breaks (a holiday, a trip home to see family) don’t restart the clock on an otherwise continuous stay, according to the finance ministry’s guidelines cited above. If you know from the start that you’ll stay more than six months, for a work assignment, say, the guidelines treat the habitual abode as starting on the day you arrive.

A stay that’s genuinely temporary, even a long one, doesn’t create a habitual abode before the six months are up. Once it passes six months, though, the retroactive rule applies regardless.

A narrow exception for long-term emigrants with a holiday home

One situation has its own carve-out, in a finance ministry ordinance on Austrian second homes (in German). If the centre of your life has been abroad for more than 5 calendar years, keeping a holiday home in Austria doesn’t automatically make you tax resident again.

Condition	What it requires
Life centred abroad	For more than 5 calendar years
Limited use of the Austrian home	Used on no more than 70 days in the year, counting any other Austrian home you hold as well
A kept record	A written log showing the days you used the Austrian home

The test runs year by year. A year with more than 70 days of use makes the home a Wohnsitz again for that year.

Skip the log and the exception falls away, even if the real number of days stayed under the limit. The ordinance makes the record a condition, not just evidence (which makes it the cheapest part of the whole arrangement to get right).

When both tests point to Austria, and when neither does

Meeting both tests adds nothing: the result is the same unlimited liability as meeting one.

Meeting neither leaves you with limited liability. Austria then taxes only income with a specific Austrian connection, such as pay for work done in Austria or rent from property in Austria, under Austrian income tax law’s list of Austrian-source income (in German). Foreign salary, foreign investment income and rent from property abroad stay outside it.

CONTESTED.
If you have a home, or spend real time, in more than one country, Austria’s answer can sit alongside another country’s, with both claiming you as a tax resident under their own rules. Whether a tax treaty settles that in Austria’s favour or the other country’s depends on the specific treaty and the facts of the case, and a general article can’t resolve it. That analysis belongs with a Steuerberater (licensed tax adviser).

Two groups the general rule may not fit

International organisation staff. If you work for one of the international organisations based in Vienna (the UN, the IAEA and OPEC among them), your tax position is often set by your organisation’s headquarters agreement with Austria rather than by the general rules above. Your organisation’s HR or legal office can confirm which rules apply.

US Persons. US citizens and green card holders owe US tax on their worldwide income wherever they live, whether or not Austria also counts them as tax resident. Becoming resident here doesn’t end US filing obligations, and staying non-resident here doesn’t remove them. The IRS sets out the US side in its guide for US citizens and resident aliens abroad; this site doesn’t calculate US tax.

Once ties to a second country come into it, or international organisation or US status, the rules above are the starting point and the treaty does the deciding. In Austria, individual tax advice is reserved for licensed Steuerberater, and the tax advisers’ chamber keeps an online register of its members (in German) for checking who is authorised.

Official sources

• Income tax liability (Einkommensteuerpflicht), Austrian business service portal (USP), in German
• Income Tax Guidelines 2000 (Einkommensteuerrichtlinien 2000), Federal Ministry of Finance, Findok, in German
• Ordinance on Austrian second homes (Zweitwohnsitzverordnung), RIS consolidated text, in German
• Income Tax Act 1988, list of Austrian-source income under limited liability, RIS consolidated text, in German
• U.S. citizens and resident aliens abroad, Internal Revenue Service, in English