What is Tax Residency?

Tax residency is your official fiscal home. It's the country with the legal right to tax your income. Unlike physical residency (which is about where you sleep), tax residency is about where the government says your money belongs. Most countries use the 183-day rule: spend more than half the year inside their borders and you're tax resident there, whether you planned it or not.

It doesn't stop at day counts. Many countries also look at where your "center of vital interests" sits: where your family lives, where you hold bank accounts, where you own property. A freelance developer who technically splits time across three countries might still be considered tax resident in whichever country has their apartment and their parents. Tax authorities are not great at following the vibe.

For digital nomads, tax residency is the difference between paying 40% income tax and paying close to nothing. Or between sleeping soundly and receiving an unexpected letter from a foreign tax authority three years later, asking some pointed questions about a year you thought you'd left behind.

Why Tax Residency Matters for Digital Nomads

When you're working remotely and moving every few months, it's tempting to assume nobody's taxing you. That assumption has been expensive for a lot of people.

The first problem is accidental tax residency: triggering residency rules somewhere you never intended to call home, just by staying a little too long. The second is residency gaps: if you're not formally resident anywhere, most countries where you previously lived can argue you never really left.

The smart move is being intentional. Pick a country with favorable rules, establish formal tax residency there, and travel in a way that keeps you under 183 days everywhere else. Portugal's NHR regime is popular. So is Estonia's e-Residency framework and Georgia's small business flat rate. You'll need a decent spreadsheet and one good international accountant. It's legal, it's more common than most nomads realize, and it saves an absurd amount of money.

This is one of those areas where "I'll sort it out eventually" tends to have a specific price tag attached.

At Casa Basilico

Our Madeira chapter had a running theme: half the dinner table was also a tax consultation. One guest, a UX researcher from Amsterdam, spent her first three days with a speakerphone open during lunch calls with her accountant. She'd been nomadic for two years and had somehow ended up with three different countries quietly assuming she was their problem. By the time she left Funchal, she'd locked in Portuguese tax residency under the NHR scheme. She celebrated with three consecutive plates of bacalhau. We had questions about the bacalhau. She had zero regrets.

Related terms:

• NHR Portugal — Portugal's Non-Habitual Residency tax regime, very popular with nomads wanting an EU base with low tax rates
• Golden Visa — Residency-by-investment programmes and how they can anchor your tax situation
• Foreign Earned Income Exclusion — The US-specific exclusion for Americans working abroad
• Beckham Law Spain — Spain's special flat-rate tax regime for foreign workers relocating to Spain

Figuring out your tax situation from a kitchen table in Madeira beats figuring it out alone. Come stay with us.