183-day rule: most common tax residency threshold
Territorial tax: only local-source income taxed (Mauritius, Cape Verde, Namibia, Paraguay)
Worldwide tax: all income taxed regardless of source (Nigeria, UK, USA)
Double taxation treaty: prevents being taxed twice on the same income
This post is general information only - consult a qualified tax adviser before relocating
Tax is the most important and most ignored aspect of remote work relocation. Most digital nomad guides focus on visa requirements and cost of living. Almost none cover what happens to your tax obligations when you move. This guide covers the key concepts - not as legal advice, but as a framework for understanding what questions to ask a tax adviser.
The fundamental question: where are you tax resident?
Tax residency determines which country has the right to tax your income. You can be tax resident in more than one country simultaneously - which is where double taxation becomes a problem.
How tax residency is determined:
- Days spent: The 183-day rule is the most common threshold. Spend more than 183 days in a country and you are likely tax resident there.
- Domicile: Where you have your permanent home or centre of life.
- Economic ties: Where your business is registered, where your bank accounts are, where your family lives.
- Intention: Whether you intend to remain in a country permanently or temporarily.
Different countries weight these factors differently. The 183-day rule is a starting point, not a universal answer.
Nigeria's tax position
Nigeria taxes its residents on worldwide income. The Federal Inland Revenue Service (FIRS) is the relevant authority.
Nigerian tax residency: You are generally considered a Nigerian tax resident if you:
- Spend more than 183 days in Nigeria in a tax year, or
- Have your principal place of business in Nigeria, or
- Are a Nigerian government employee posted abroad
What this means for remote workers: If you spend more than 183 days per year in Nigeria while working remotely for foreign clients, you are a Nigerian tax resident and your foreign income is subject to Nigerian personal income tax.
The practical reality: FIRS enforcement of tax on foreign-sourced income for individuals is limited in practice. However, this does not mean the obligation does not exist - it means the risk of enforcement is currently low. This can change.
Primary source: https://www.firs.gov.ng/
Territorial tax systems - the remote worker advantage
Several popular remote work destinations operate territorial tax systems. This is the key tax advantage for African remote workers.
| Country | Tax system | Foreign income taxed? | Notes |
|---|---|---|---|
| Mauritius | Territorial | No | 15% on local income only |
| Cape Verde | Territorial | No | Low local income tax |
| Namibia | Territorial | No | 18-37% on local income only |
| Paraguay | Territorial | No | 10% on local income only |
| Portugal | Worldwide (with NHR/IFICI) | Reduced | Special regime for new residents |
| Spain | Worldwide (with Beckham Law) | Reduced | 24% flat rate for 6 years |
| Germany | Worldwide | Yes | Full worldwide taxation |
| UK | Worldwide | Yes | Full worldwide taxation |
The territorial tax advantage: If you are tax resident in Mauritius and your income comes entirely from foreign clients, you pay 0% Mauritius income tax on that income. You pay 15% only on any income sourced within Mauritius.
The catch: You must genuinely be tax resident in Mauritius (spending 183+ days there) and you must have genuinely ceased to be a Nigerian tax resident. If you are still spending 183+ days in Nigeria, you remain a Nigerian tax resident regardless of where else you are resident.
Double taxation treaties - Nigeria's network
Nigeria has double taxation treaties with several countries. These treaties prevent you from being taxed twice on the same income.
Nigeria's treaty partners include: UK, France, Belgium, Netherlands, Romania, Canada, China, South Africa, Pakistan, Philippines, and others.
Notable absences: Nigeria does not have double taxation treaties with Germany, Portugal, Spain, Mauritius, Cape Verde or Namibia. This means if you are tax resident in both Nigeria and one of these countries, you may face double taxation without treaty relief.
What a treaty does: It typically provides that income is taxed in only one country (usually the country of source or the country of residence), or that tax paid in one country can be credited against tax owed in the other.
The practical framework for African remote workers
Scenario 1 - You stay in Nigeria, work remotely for foreign clients:
- You are a Nigerian tax resident
- Your foreign income is subject to Nigerian personal income tax
- You should be filing Nigerian tax returns and paying tax on your foreign earnings
- Consult a Nigerian tax adviser (chartered accountant) about your obligations
Scenario 2 - You relocate to Mauritius, spend 183+ days there:
- You become a Mauritius tax resident
- You should formally cease Nigerian tax residency (notify FIRS)
- Your foreign-sourced income is not taxed in Mauritius
- You may still have Nigerian tax obligations if you have Nigerian-source income
- Consult a Mauritius tax adviser and a Nigerian tax adviser
Scenario 3 - You split your time between Nigeria and another country:
- You may be tax resident in both countries
- Without a double taxation treaty, you may face double taxation
- This is the most complex scenario - professional advice is essential
When to get professional advice
This guide is a framework for understanding the issues, not a substitute for professional advice. Tax law is complex, country-specific, and changes frequently. Before relocating, consult a qualified tax adviser in both Nigeria and your destination country.
Get professional advice when:
- You are earning more than NGN 5M/year from foreign clients
- You are planning to spend more than 6 months outside Nigeria
- You are setting up a foreign company to receive your income
- You have Nigerian-source income (property, investments) as well as foreign income
- You are considering a territorial tax jurisdiction
Evidence note
Tax residency rules and treaty information sourced from FIRS at https://www.firs.gov.ng/, the OECD tax treaty database, and the official tax authority portals of each country mentioned, retrieved October 2026. Tax law changes frequently. This post is general information only - not legal or tax advice. Consult a qualified tax adviser before making any decisions.