What You Need to Know About Sierra Leone Corporate Tax

The Finance Act 2026 brought several changes to corporate taxation in Sierra Leone, restoring the rate to 30% from 25% and expanding the Minimum Alternate Tax so that every company pays at least a baseline amount regardless of deductions. Withholding tax on non-resident payments also jumped to 20%. This guide covers what those changes mean for your annual filing and tax planning.

1. What is Corporate Tax?

Corporate tax is the income tax levied on the profits of companies operating in Sierra Leone. The standard rate is 30% (restored by the Finance Act 2026). Sierra Leone also applies a Minimum Alternate Tax (MAT) to ensure all companies contribute a minimum amount of tax. Corporate tax is administered by the National Revenue Authority (NRA).

2. Who does it apply to?

This usually applies to:

All companies incorporated in Sierra Leone
Foreign companies with a permanent establishment in Sierra Leone
Branches of foreign companies operating in the country
All corporate entities subject to the Minimum Alternate Tax (expanded under the Finance Act 2026)
Non-resident companies earning income from Sierra Leone sources

3. Why does it matter?

Understanding corporate tax helps you:

Stay compliant with tax laws enforced by the National Revenue Authority
Avoid penalties and late fees for missed filings or underpayment
Keep proper records to support your tax return
File and pay correctly through the NRA online portal
Plan your cash flow better by estimating your tax liability in advance

4. How does it work?

Here's the basic process:

Register your company with the NRA and obtain a TIN
Maintain proper books of account throughout the financial year
Calculate your taxable profit by deducting allowable expenses from gross income
Apply the 30% corporate tax rate
Compare your calculated tax with the Minimum Alternate Tax to determine the higher amount payable
File your annual corporate income tax return with the NRA
Pay any balance of tax outstanding when you file

5. What forms are involved?

Corporate Income Tax Return - The main annual return for companies reporting taxable income to the NRA
Provisional Tax Assessment - Estimated tax liability filed during the year
Withholding Tax Return - Filed when tax is withheld on payments to non-residents (increased to 20% under the Finance Act 2026)

6. What information do you need?

Before handling corporate tax, make sure you have:

Your company's NRA TIN and online portal login
Audited financial statements or management accounts
A schedule of all income and revenue for the financial year
Records of all allowable business expenses and deductions
Capital allowance schedules for depreciable assets
Details of any tax losses being carried forward
Records of withholding tax deducted at source

7. Important deadlines

Filing frequency: Annually
Payment deadline: Corporate tax returns and payments are generally due within a prescribed period after the end of the company's financial year
Year-end requirements: File the corporate income tax return with supporting financial statements

8. Common mistakes to avoid

Not accounting for the Minimum Alternate Tax (MAT) which now applies to all companies
Claiming the investment allowance (abolished under the Finance Act 2026)
Failing to withhold 20% on payments to non-residents (increased from the previous rate)
Not keeping supporting documents for the required retention period
Underestimating tax liability and facing penalties at year-end
Not applying for available capital allowances on qualifying assets

9. Simple example

Your company in Freetown earns SLE 100,000,000 in gross revenue for the financial year. Your allowable business expenses total SLE 70,000,000.

Taxable profit: SLE 100,000,000 - SLE 70,000,000 = SLE 30,000,000

Corporate tax at 30%: SLE 30,000,000 x 30% = SLE 9,000,000

You would also check whether the Minimum Alternate Tax exceeds SLE 9,000,000. If it does, you pay the MAT amount instead. Otherwise, you pay the standard corporate tax of SLE 9,000,000.

10. FAQ

Q: What is the corporate tax rate in Sierra Leone? A: The standard rate is 30%, restored by the Finance Act 2026 (previously 25%).

Q: What is the Minimum Alternate Tax? A: The MAT is a minimum tax that ensures all companies pay at least a certain amount, regardless of deductions. It now applies to all companies under the Finance Act 2026.

Q: Has the withholding tax rate on non-resident payments changed? A: Yes, withholding tax on payments to non-residents increased to 20% under the Finance Act 2026.

Q: Can I carry forward business losses? A: Yes, business losses can generally be carried forward to offset future taxable profits. Check with the NRA for specific rules.

Q: What happens if I file my corporate tax return late? A: Late filing attracts penalties and interest on any outstanding tax. The NRA may impose additional administrative penalties for non-compliance.

11. Final takeaway

Corporate tax at 30% is a significant obligation for businesses in Sierra Leone, and understanding the new MAT rules and withholding tax changes keeps your company compliant with the NRA.

Caption

What you need to know about Sierra Leone corporate tax: The rate is 30% (restored in 2026), Minimum Alternate Tax applies to all companies, and withholding tax on non-resident payments increased to 20%.

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