Jonas counted every single day. His spreadsheet was beautiful, colour-coded and never above 120 days in any country – and he still got a letter from his old tax office asking for five years of back taxes.
The problem wasn’t his maths. It was the rule he was counting against. “Stay under 183 days everywhere and nobody can tax you” is the most shared sentence in nomad circles, and it’s wrong often enough to be expensive. Here are five cautionary tales that show why – and one that went right.
The people below are illustrations – names and details are made up, the rules are real (as of September 2026). For the full rulebook on residency, read our tax residency guide.
Where the 183 comes from#
The number isn’t invented. Many countries use “more than 183 days in a year” as one way to become tax resident. And double tax treaties use 183 days in a narrow rule for employees on short foreign assignments (Article 15 of the OECD model).
What 183 days is not: a general rule that says fewer days means no tax. Most countries have several tests, and meeting any one of them is enough. Days are simply the easiest one to post on Instagram.
Story 1: Jonas keeps the flat “for storage”#
Jonas, a German freelance developer, went nomadic in 2024. He spent 120 days a year in Germany at most, visiting clients and family. His Hamburg flat stayed rented in his name – full of furniture, bikes and a very expensive coffee machine.
Under German law, that flat was the whole story. Section 8 of the German Fiscal Code says you have a residence (Wohnsitz) wherever you keep a home under circumstances suggesting you’ll keep and use it. No minimum days required. A furnished flat you can walk into any time ticks that box, whether you sleep there 120 nights or 12.
So Jonas was fully taxable in Germany on his worldwide income the entire time. His day count was irrelevant.
What would have worked: giving up the flat (or letting it long-term to someone else), deregistering and moving his belongings to storage he doesn’t live in. Our leaving Germany checklist covers the details.
Story 2: Lena’s long winter#
Lena left Germany properly: flat gone, deregistered, no home there. Then she spent a winter working from a furnished rental in Leipzig, from the start of October to mid-April, for a big client project. That’s 92 days in the first calendar year and 105 in the second. Under 183 in both years. Safe?
Not in Germany. Section 9 of the Fiscal Code treats a continuous stay of more than six months as a habitual abode – from day one, even across two calendar years, and short trips out don’t break the chain. The only exception is a stay purely for visits, holidays or similar private purposes of up to a year. A six-month work project doesn’t qualify.
The lesson: some countries look at continuous stays, not calendar-year totals. Two neat halves can add up to one tax residency.
Story 3: Marco’s family lives in Spain#
Marco runs a consultancy and travels constantly – about 110 days a year in Spain, the rest spread across Europe and the Gulf. His wife and their two school-age children live in their house near Málaga.
Spain has three routes to residency: more than 183 days in the calendar year, your main centre of business or economic interests being in Spain, or a presumption that you’re resident if your spouse (not legally separated) and minor children live there permanently. The presumption can be rebutted, but the burden is on Marco – and “I’m rarely home” isn’t proof of residence somewhere else.
To make it worse, Spain counts temporary absences as days in Spain unless you can prove tax residency in another country. Without a certificate from a real home base, Marco’s 110 days don’t mean much.
The lesson: where your family lives often matters more than where you sleep.
Story 4: Priya and the rolling window#
Priya moved to Lisbon at the start of October on a whim, stayed until mid-April, then left. Roughly 90 days in one calendar year and 105 in the next. She figured she was never resident.
Portugal doesn’t count per calendar year. You’re resident if you spend more than 183 days in any 12-month period beginning or ending in the tax year – and any day with an overnight stay counts, partial or not. Her 197 days sat inside one 12-month window. There’s a second route too: having a home in Portugal in circumstances suggesting you intend to keep it as your habitual residence.
Other countries have their own counting quirks. Italy, since 2024, counts physical presence for more than 183 days including fractions of days, so arrival and departure days count in full.
The lesson: “183 days” means different things in different countries. Count the way the country counts, not the way your calendar app does.
Story 5: Tom goes home for the summer#
Tom left the UK three years ago but kept close ties: his wife still lives in their London house, he does some work there, and he spent plenty of time in the UK in previous years. This year he came back for 100 days.
The UK’s Statutory Residence Test combines days with ties. For people who were UK resident in any of the previous three tax years, the number of ties sets the day limit: more than 15 days with four ties makes you resident, more than 45 with three, more than 90 with two, and more than 120 with just one. With his family, a home and work ties, Tom crossed the line at a fraction of 183 days.
The lesson: in countries with statutory tests, your ties set your day allowance. More ties, fewer days.
What actually decides where you’re resident#
Put the stories together and a pattern appears. Tax offices ask:
| Question | Typical test | Days needed |
|---|---|---|
| Do you keep a home here? | Home or dwelling available to you | Often zero |
| Did you stay a long, continuous stretch? | Habitual abode, rolling windows | Varies (Germany: more than six months in a row) |
| Is your family here? | Centre of vital interests, family presumption | Often irrelevant |
| Is your business or income centred here? | Economic centre of interests | Often irrelevant |
| Did you exceed the day count? | Days of presence | Often 183, counted in local ways |
| What passport do you hold? | Citizenship-based taxation | The US taxes citizens anywhere |
And when two countries both claim you, the tax treaty between them runs a tie-breaker: permanent home, then centre of vital interests, then habitual abode, then nationality. Note the order – days come third. And the tie-breaker never produces “resident nowhere”; without a second country claiming you, your old one usually wins by default.
Story 6: Anna does it the boring way#
Anna, also German, wanted the same freedom as Jonas. She sold the flat, deregistered and moved her life to Limassol: a year-round lease, a Cypriot company where she’s the director, local bank account, gym membership, the lot. She spends about 75 days a year in Cyprus and travels the rest, never more than 183 days in any single other country.
That fits Cyprus’s 60-day rule: at least 60 days in Cyprus, a permanent home there, a Cypriot business or directorship, no other tax residency and no more than 183 days anywhere else. Anna gets a Cypriot tax residency certificate every year. As a non-dom, she pays no Special Defence Contribution on dividends for 17 years (the 2.65% health contribution still applies). Her bank’s CRS form has one honest line on it.
The UAE works on the same principle: 90 days a year can be enough for a tax residency certificate if you hold a residence visa and have a permanent home or a job or business there.
Same number of travel days as Jonas. Completely different outcome. The difference isn’t counting – it’s having one clear home base and no loose ends in the old country. More options in best residency countries.
Your five-minute myth check#
Answer honestly:
- Do you still have a home available in your old country – including “your room” at your parents’?
- Do your partner or children live in a country you claim not to live in?
- Did you spend more than six months in a row anywhere, even across New Year?
- Is most of your business run from, or paid into, one country?
- Can you name the one country that issues your tax residency certificate?
Yes to 1–4, or no to 5? Then your day count isn’t protecting you. Our 7 digital nomad tax traps cover the other ways people stay taxable by accident, and the legal side of perpetual travel explains why “resident nowhere” is so fragile.
This article is general information, not tax or legal advice. Residency rules differ by country and change over time.
Want to know where you’d actually be resident after your move? Try the Jurisdiction Finder, or get your plan checked in a strategy session.
Sources#
- OECD Model Tax Convention on Income and on Capital (2017), Articles 4 and 15
- §8 AO – Wohnsitz (Germany)
- §9 AO – gewöhnlicher Aufenthalt (Germany)
- Spanish Tax Agency – habitual residence in Spanish territory
- OECD – Portugal: information on residency for tax purposes
- Agenzia delle Entrate – Circular 20/E of 4 November 2024 on tax residence of individuals
- UK Finance Act 2013, Schedule 45, paragraph 18 – sufficient ties test
- Cyprus Tax Department – tax residency and 60-day rule
- PwC Worldwide Tax Summaries – UAE residence
