Sierra Leone occupies a place of particular significance in the British consciousness — and for good reason. Freetown, one of the oldest cities in sub-Saharan Africa, was founded as a settlement for freed slaves in 1787, and British influence on the country's legal, educational, and financial institutions remains profound. English is the official language; the legal system is based on English common law; and the professional classes have historically had strong connections to British universities.
Today, Sierra Leone's expat community is anchored in international development organisations (DFID/FCDO successors, UN agencies, NGOs), the mining sector (iron ore, diamonds, rutile, bauxite), diplomacy, and a growing private sector. British nationals are among the most prominent non-African expatriate groups.
For HNW British expats and international investors, Sierra Leone offers genuine opportunities — particularly in extractive industries and agribusiness — but requires careful financial planning given the country's low-income economy, limited financial infrastructure, and Leones (SLE) currency depreciation.
Important: This guide reflects conditions as of mid-2026. Sierra Leone's tax, banking, and regulatory environment is subject to change. This is general information, not professional advice. Always consult qualified advisers with current knowledge before acting. Investments can fall in value; tax rules change; professional advice is essential.
Tax Residency Rules
Under Sierra Leone's Income Tax Act (as amended), an individual is considered resident for tax purposes if they are physically present in Sierra Leone for 183 days or more in a calendar year, or if Sierra Leone is their habitual place of abode.
Residents are taxed on worldwide income. Non-residents are taxed on Sierra Leone-source income only.
The National Revenue Authority (NRA) administers personal income tax and has in recent years improved its enforcement capacity, particularly for formal sector employers. British expats on defined-term contracts should monitor their day count carefully if they wish to retain non-resident status.
Income Tax
Sierra Leone imposes a progressive personal income tax (Pay As You Earn for employment income) with rates broadly as follows (thresholds in Sierra Leonean Leones, subject to annual budget adjustment):
- 0% on a basic personal allowance tranche
- 15% on the next band
- 20% on the middle band
- 30% on the highest income band
Tax is withheld by employers on employment income under the PAYE system. Non-employment income (rental income, business profits, investment returns) is subject to self-assessment.
UK-Sierra Leone Double Taxation Agreement: The United Kingdom and Sierra Leone have a bilateral DTA, one of the longer-standing agreements in HMRC's network inherited from colonial-era arrangements. This DTA provides relief from double taxation on income, employment income, dividends, and pensions — making it a useful planning tool compared to many African destinations. The specific provisions should be confirmed with the current treaty text, as older agreements may have been revised.
Capital Gains Tax
Sierra Leone charges Capital Gains Tax on disposals of qualifying assets. The rate has historically been applied at a flat rate of 20–30% on chargeable gains, though the specific rules and exemptions should be confirmed with the NRA or a local tax adviser, as recent reform discussions have been ongoing.
Gains on UK or third-country assets are outside the Sierra Leone tax net for non-residents. For residents, worldwide gains are in principle within scope — though enforcement of the worldwide basis for mobile individuals has been uneven in practice.
Inheritance and Estate Tax
Sierra Leone does not impose an inheritance or estate tax. Succession is governed by the Devolution of Estates Act and the Intestate Succession Act, which broadly follow English common law principles.
Foreign nationals should ensure they have a valid will covering their Sierra Leone-located assets. Probate in Sierra Leone can be slow and documentation-intensive; ensuring assets are properly registered and documented in your estate planning documents is strongly recommended.
Wealth Taxes
Sierra Leone does not impose an annual wealth tax.
Currency and Banking Environment
Currency: Sierra Leone uses the Sierra Leonean Leone (SLE, redenominated from the old SLL at 1,000:1 in 2022). The Leone has experienced significant depreciation against major currencies over recent years. Holding savings in SLE is not recommended for internationally mobile individuals.
Banking: The Bank of Sierra Leone supervises the commercial banking sector. Major banks include:
- Rokel Commercial Bank (majority state-owned)
- Sierra Leone Commercial Bank
- Union Trust Bank
- Guaranty Trust Bank Sierra Leone (GTBank)
- Access Bank Sierra Leone
- Standard Chartered Sierra Leone
International wire transfer capabilities are available through GTBank, Access Bank, and Standard Chartered. Correspondent banking relationships with UK and US clearing banks are available but limited, and transactions involving Sierra Leonean banks may attract enhanced due diligence from Western financial institutions.
Most international professionals maintain their primary banking in the UK, South Africa, or — increasingly — through digital banking platforms that support international payments.
Fintech: Mobile money (particularly Afrimoney, Africell's mobile money service) is growing and widely used for day-to-day transactions. Orange Money is also available.
Investment Climate
Sierra Leone has significant natural resource wealth:
- Diamonds (one of the world's oldest diamond-producing nations)
- Iron ore (Tonkolili mine operated by Gerald Group)
- Rutile (titanium ore)
- Bauxite and other minerals
The National Minerals Agency regulates the extractive sector. Large-scale investment requires engagement with the government's licensing and royalty frameworks.
The Sierra Leone Investment and Export Promotion Agency (SLIEPA) promotes FDI across manufacturing, agribusiness, tourism, and ICT.
Land: Land tenure in Sierra Leone is complex. There are three categories:
- Government land (can be leased by foreigners)
- Chiefdom customary land (managed by paramount chiefs; foreigners require leases through the chieftaincy system)
- Freehold land in the Western Area (Freetown and environs; available to non-nationals through proper legal title transfer)
Legal advice from a qualified Sierra Leonean solicitor is essential for any property transaction.
UK Pension Implications
For British nationals in Sierra Leone:
UK pensions: The UK-Sierra Leone DTA contains provisions relating to government pensions (which remain taxable only in the UK for UK nationals serving in government roles abroad). Private pension income positions depend on the specific DTA article applicable — review with a specialist.
State Pension: Voluntary NI contributions (Class 2 or Class 3) should be maintained throughout any Sierra Leone assignment. Sierra Leone has no reciprocal social security agreement with the UK.
QROPS: There are no Sierra Leonean pension arrangements that qualify as QROPS. Do not transfer UK pension assets to Sierra Leone.
Social Security
Sierra Leone's National Social Security and Insurance Trust (NASSIT) provides old age, invalidity, and survivors' benefits for formal sector workers. Contribution rates are:
- Employee: 5% of monthly earnings
- Employer: 10% of monthly gross payroll
Foreign nationals employed in Sierra Leone are subject to NASSIT contributions unless an exemption applies under a bilateral agreement (there is no UK-Sierra Leone social security totalization agreement). In practice, many international organisations operate under specific arrangements that should be confirmed with your employer.
Key Compliance Issues for Expats
- UK residence and worldwide income: If you remain UK resident, all Sierra Leone income must be disclosed to HMRC. Use the DTA to avoid double taxation.
- DTA availability: The UK-Sierra Leone DTA is a genuine advantage; ensure your arrangements are structured to make use of it.
- Foreign income disclosure: HMRC requires disclosure of all foreign income on the Self Assessment return. Failure to disclose attracts significant penalties.
- Anti-money laundering: Sierra Leone is subject to FATF monitoring. UK banks apply enhanced due diligence to Sierra Leone-related transactions. Maintain thorough documentation of source of funds.
- CRS: Sierra Leone has committed to the Common Reporting Standard. NRA-reported data is shared internationally.
Cost of Living
Freetown offers a range of expat-standard accommodation and services. The cost of living, while low by Western standards, is moderate by West African standards — imported goods are expensive. Expat housing in the Hill Station, Wilberforce, and Aberdeen areas is comfortable but carries a premium. Security services and compound accommodation are common for senior staff.
Healthcare outside the major hospitals (including Connaught Hospital and the Choithram Memorial Hospital) is limited. Comprehensive international health insurance including air medical evacuation (to Accra, Nairobi, or London) is essential.
Practical Financial Planning Tips
- Leverage the DTA: The UK-Sierra Leone DTA is valuable; ensure your tax adviser confirms how it applies to your specific income streams.
- Offshore savings: Maintain all savings and investments in the UK, Isle of Man, Guernsey, or South Africa. The SLE's depreciation history makes local-currency savings unreliable.
- Hard currency income: Negotiate salary payment in USD or GBP into an offshore account.
- State Pension: Keep up NI contributions — the UK State Pension is far more valuable than any Sierra Leonean NASSIT entitlement.
- Medical evacuation: Ensure your policy covers evacuation to a Centre of Excellence outside West Africa.
- Property documentation: If you acquire any Sierra Leonean property interest, ensure title searches, conveyancing, and registration are carried out by a qualified local solicitor.
How Global Investments Can Help
Global Investments has over 32 years of experience advising British expats and HNW individuals across Africa and complex multi-jurisdiction environments. For clients in or connected to Sierra Leone, our advisers can assist with:
- UK DTA analysis and HMRC compliance
- Offshore portfolio structuring and currency management
- UK pension strategies and State Pension protection
- Cross-border estate planning
- Advice on structuring investments in the extractive and agribusiness sectors
Contact our international advisory team for a confidential consultation.
This guide is for general information only and does not constitute financial advice or a personal recommendation. The value of investments can fall as well as rise and you may get back less than you invest. Tax rules, pension legislation, and investment regulations change — always verify current rules and seek advice from a qualified independent financial adviser before making any financial decisions.