Tax Residency Basics for Remote Founders
Running a company from a laptop means you can work from almost anywhere. Tax authorities, however, still care very much about where you are. If you are a founder who splits the year between countries, works from a beach for a few months or is thinking about moving abroad, understanding tax residency basics can save you from a nasty surprise for you and for your company.
Key takeaways
- Tax residency decides which country can tax your worldwide income, and each country sets its own rules.
- Examples include the UK statutory residence test and the US substantial presence test. US citizens are generally taxed by the US wherever they live.
- It is possible to be resident in two countries at once, or to fall through the gaps and create confusion in both.
- Working remotely abroad can also create a taxable presence for your company in that country.
- Keep a day-by-day travel log and get local advice before a move, not after.
Most founders never think about tax residency while they live and work in one country. It only becomes a question once life gets more mobile: a cofounder moves to Lisbon, you spend winter with family overseas, or you relocate to be closer to investors. Suddenly two tax systems may both think they have a claim on you.
This explainer walks through the core ideas in plain language so you can spot when you need help and ask the right questions. It is general information, not tax or legal advice. Residency rules are detailed, change over time and depend heavily on personal facts, so speak with a qualified tax adviser in each country involved before you make decisions.
What tax residency means
Tax residency is a legal status that tells a country it can treat you as one of its taxpayers. In most countries, residents are taxed on their worldwide income, while non-residents are usually taxed only on income that comes from that country, such as local rental income or work physically done there.
It is important to separate tax residency from other ideas that feel similar:
- Citizenship. Your passport and your tax residency are often different things. A notable exception is the US, which generally taxes its citizens on worldwide income wherever they live.
- Immigration status. A visa or residence permit gives you the right to stay. It does not automatically decide your tax position, although it can be one of the facts considered.
- Where your company is registered. Your company has its own tax residency, which can be affected by where its decisions are actually made.
Because each country writes its own rules, there is no single global answer. You need to look at each country you have meaningful ties to.
How countries decide who is resident
Countries tend to use a mix of two kinds of test: how much time you spend there, and how strong your connections are. The exact rules and thresholds vary, and they change, so always check the official guidance for the countries involved.
Day-counting tests
Many countries count the days you are physically present. Some look at a single tax year, others look back across several years using a formula. How a "day" is counted (for example, whether you are there at midnight) also differs. The US substantial presence test is a well-known example of a day-counting test that uses a formula across more than one year. Check the IRS guidance for the current method.
Ties and connection tests
Other rules look at your connections: a home available to you, where your family lives, where you work, and where your economic interests sit. The UK statutory residence test combines automatic tests with a "sufficient ties" test that weighs connections like these against the days you spend in the UK. HMRC publishes detailed guidance and worked examples, and the outcome can turn on small details.
Domicile and other concepts
Some countries also use older ideas such as domicile or habitual residence, and rules in this area have been changing in several places. Treat any article, including this one, as a starting point and confirm the current rules.
Common mistake
Believing there is a universal "under six months and you are fine" rule. There is not. Some countries can treat you as resident after fewer days if you have strong ties, and some count days over several years. Leaving a country can also be harder to prove than founders expect if you keep a home, a family base or ongoing work there.
Dual residency and tax treaties
Because every country applies its own rules, you can end up resident in two places in the same year. That sounds alarming, and it can be expensive if you ignore it, but there is usually a framework to sort it out.
Many countries have signed double tax treaties with each other. A treaty often contains "tie-breaker" rules that decide which country gets to treat you as resident for treaty purposes, looking at things like where you have a permanent home and where your personal and economic life is centered. Treaties also commonly provide relief so the same income is not fully taxed twice, often through credits for tax paid in the other country.
Treaties do not apply automatically in every case, and they do not cover every pair of countries. You may need to claim treaty benefits on a return or a specific form. This is one of the clearest places where professional advice pays for itself.
Pro tip
Before you spend a long stretch in a new country, ask an adviser two questions: "Could this make me resident here?" and "If both countries claim me, which treaty rules apply?" It is far cheaper to plan than to untangle two tax returns afterward.
Your company can be affected too
This is the part many founders miss. Your personal location can change your company's tax position, not just your own.
Taxable presence abroad
If you, as a founder or key employee, regularly work from another country and do the core work of the business there, that country may argue the company has a taxable presence, often called a permanent establishment. That can mean the company has to register, file returns and pay tax on profits linked to that country. Signing contracts, negotiating deals or managing the business from abroad can all be relevant facts.
Where the company is managed
Some countries treat a company as resident where its central management and control happens, for example where the board meets and key decisions are made. If all the directors live in one country and make decisions there, that may count even if the company is registered somewhere else.
Payroll and employment rules
If your company pays you a salary while you live abroad, the host country may expect payroll taxes or social contributions to be handled locally. Remote work policies should cover hours, equipment, data security and expenses, and employment law varies by country, so check both the tax and the employment side before anyone relocates.
Hypothetical example
Imagine Mei, a founder of a small software company registered in the UK. She decides to spend several months working from another European country to be near family. She keeps her UK flat, and her cofounder stays in London. Before she leaves, her adviser checks three things: whether the stay could make Mei resident there under local rules, whether a treaty would decide in the UK's favor if both countries claimed her, and whether her work abroad could create a taxable presence for the company. They agree that Mei will not sign contracts while away, that board decisions stay in London, and that she keeps a detailed day log. The plan does not make the risk vanish, but it means Mei is making a choice with her eyes open.
Records to keep as a mobile founder
Whatever your situation, evidence is your friend. Residency questions are decided on facts, and the person with clear records is in a far stronger position.
- Keep a day log. Record each day where you were at the start and end of the day, plus travel days. A simple spreadsheet works.
- Save proof of travel. Keep boarding passes, booking confirmations and passport stamp photos in one folder per year.
- Track your ties. Note where you have a home available, where your family lives and where you work, and when any of these change.
- Record where decisions are made. For your company, note where board meetings and key decisions take place, and keep minutes.
- Note income by source. Separate salary, dividends, consulting fees and any income connected to a particular country.
- Review quarterly. Once a quarter, look at your day count and plans for the rest of the year with your adviser.
A simple residency tracker template
Copy this layout into a spreadsheet. The entries below are made-up examples for illustration only.
| Country | Days this tax year (example) | Home available? | Family there? | Work done there | Company decisions made there? | Adviser checked? |
|---|---|---|---|---|---|---|
| Home country | 140 | Yes, own flat | Yes | Most client work | Yes, board meetings | Yes, March |
| Country B | 75 | Rented apartment | Partner's family | Product work only | No | Booked for November |
| Country C | 12 | No, hotel | No | Conference | No | Not needed yet |
Deadlines and timing to watch
If you are reviewing your position in November, the year-end is close and filing deadlines follow soon after. A few to keep in view:
- UK Self Assessment. Online returns and balancing payments are due on 31 January. The residence pages of the return are where your status for the year is reported.
- US estimated taxes. The Q4 estimated tax payment for 2027 is due on 18 January 2028.
- Other countries. Tax years and deadlines differ widely. Some countries do not use the calendar year at all, so confirm the dates for each country involved.
If you moved during the year, you may need to file in more than one country, and some countries allow a "split year" or part-year treatment. Ask your adviser early, because gathering records from several countries takes time.
Your remote founder residency checklist
- List every country where you spent meaningful time this year
- Start or update a day-by-day travel log
- Note your home, family and work ties in each country
- Check whether the countries involved have a tax treaty
- Ask whether your work abroad could create a taxable presence for your company
- Confirm where board decisions are made and keep minutes
- Review payroll and social contributions if you are paid while abroad
- Note filing deadlines in each country
- Book a session with a cross-border tax adviser before any planned move
Frequently asked questions
Can I be a tax resident nowhere?
Some people try to arrange this by moving constantly, but it is risky. Your previous home country may continue to treat you as resident if you keep ties there, and you may struggle to prove you left. It can also cause practical problems with banking and treaty claims. Get advice rather than assuming you are outside every system.
Does a digital nomad visa change my tax residency?
A visa gives you the right to stay; it does not by itself settle your tax position. Some countries have special tax rules linked to certain visas, and others do not. Check the host country's tax guidance and your home country's rules together.
If my company is in the US, does it matter where I live?
It can. Your personal residency affects where you pay tax on your salary or dividends, and your work from another country may create obligations for the company there. If you are a US citizen, the US will generally still expect a return from you wherever you live.
Related reading
The bottom line
Tax residency is decided country by country, using a mix of days and ties, and it can follow you further than you expect. As a remote founder, your movements can also affect your company through taxable presence and where decisions are made. Treaties often help, but only if you understand them and claim them properly.
Start a day log today, map your ties in each country and talk to a qualified cross-border adviser before your next long stay abroad. A little planning now lets you enjoy working from anywhere without worrying about the paperwork that follows you home.
