Company Income Tax Calculator Nigeria 2025 — CIT + TET
Calculate Company Income Tax (CIT) for Nigerian companies. Includes small/medium/large company rates, TET, and effective tax rate. Updated for NTA 2025.
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Company size: Large ₦
Accounting profit adjusted for tax purposes Quick presets:
₦0
CIT Payable
₦0
TET (3%)
₦0
Total Tax Burden
0%
Effective Rate
Tax Computation
| Item | Amount |
|---|
Company Size Classification
| Category | Annual Turnover | CIT Rate |
|---|---|---|
| Small | ≤ ₦25,000,000 | 0% |
| Medium | ₦25M – ₦100M | 20% |
| Large | > ₦100,000,000 | 30% |
Company Income Tax in Nigeria
CIT is administered by the Federal Inland Revenue Service (FIRS) and is payable on the assessable profits of all companies incorporated in Nigeria, as well as foreign companies with a Nigerian permanent establishment. Returns are due within 6 months of the company's accounting year end.
Frequently Asked Questions
What are the CIT rates for companies in Nigeria 2025?
Under the Nigeria Tax Act 2025: Small companies with annual turnover of ₦25 million or less pay 0% CIT. Medium companies (₦25M–₦100M turnover) pay 20%. Large companies (above ₦100M turnover) pay 30% of assessable profit.
What is assessable profit for CIT purposes?
Assessable profit is the profit on which CIT is levied. It is computed by taking accounting profit and adjusting for non-deductible expenses (e.g., depreciation is replaced by capital allowances), non-taxable income, and other FIRS-approved adjustments.
What is the Tertiary Education Tax (TET)?
Tertiary Education Tax is 3% of assessable profit and is payable in addition to CIT. It applies to all companies liable to CIT and is remitted to the Tertiary Education Trust Fund (TETFund). TET is not deductible when computing CIT.
Can small companies still pay CIT?
Small companies (turnover ≤ ₦25M) are exempt from CIT but must still file annual returns. They may also be exempt from TET depending on FIRS guidance. Minimum tax rules may still apply in some cases.
What is the minimum tax rule in Nigeria?
Minimum tax applies when a company makes a loss or has a very low profit. It is generally 1% of gross turnover (with some exemptions for new companies, companies with low equity, and certain sectors). This calculator focuses on the standard CIT computation.