Capital Gains Tax Calculator
So you sold an asset for more than you bought it for. That is a Capital Gain, which is great, but tax follows profit like gala hawkers follows vehicles inside Lagos traffic. This calculator simplifies the Nigerian tax liability when you sell something big.
The major benefit: it combines your profit with your other annual income to give you a true picture of the tax you owe. (Yes, that is exactly how it works here.)
Capital Gains Tax Calculator
Nigeria Tax Act 2025 • Asset Disposal
💡 How It Works
Capital gains are taxed as part of your total income using progressive tax rates (0% to 25%). The gain is calculated as disposal proceeds minus acquisition cost and expenses.
🏠
Property
💎
Other Assets
The total amount received from selling the asset
What you originally paid for the asset
Costs incurred in selling the asset (legal fees, agent commissions)
Your other taxable income for the year (to calculate total tax)
⚠️ Exemptions
Personal chattels under ₦5M are exempt. Principal private residences may qualify for exemption. Motor vehicles are exempt from capital gains tax.
Disposal Proceeds
₦0
Less: Acquisition Cost
₦0
Less: Disposal Expenses
₦0
Capital Gain
₦0
Tax on Capital Gain
₦0
Tax Calculation Breakdown
Total Income (Other + Gain)
₦0
Total Tax Payable
₦0
Tax on Other Income
₦0
Attributable to Capital Gain
₦0
Net Gain After Tax
₦0
How to Use the Nigeria Capital Gains Tax Calculator
Selling an asset in Nigeria often leads to a confusing tax bill. If you guess your tax liability, you risk underpaying and facing FIRS penalties or overpaying and losing money. This calculator simplifies the Nigeria Tax Act (2025) rules so you can plan your sale with confidence.
What the Calculator Does
This tool computes the tax you owe when you sell property, shares, or other assets. It follows the Nigeria Tax Act (2025) progressive tax rates.
Required Inputs:
- Sale price of the asset.
- Original purchase price.
- Legal and agent fees.
- Other annual income (to determine your tax bracket).
Provided Outputs:
- Total capital gain or loss.
- Specific tax amount owed on the gain.
- Final net profit after all taxes.
Key Features
- Progressive Rate Math: Automatically applies rates from 0% to 25%.
- Loss Detection: Identifies if you made a loss and zeros out the tax.
- Income Integration: Factors in your salary to find the right tax bracket.
- Exemption Alerts: Lists items like motor vehicles that you don’t need to pay tax on.
Prerequisites
- Keep your original purchase receipt or deed of assignment.
- Get a final invoice for agent commissions or legal fees.
- Know your total annual salary or business profit for the year.
Step-by-Step Guide
- Select your asset type: Click on Property, Shares, or Other Assets. The tool highlights your choice in yellow.
- Enter the Sale Price: Type the total amount the buyer paid you in the "Disposal/Sale Price" box. Do not include commas.
- Enter the Original Cost: Type what you initially paid for the asset in the "Original Acquisition Cost" box.
- List your expenses: Add up legal fees and agent commissions. Put this total in the "Disposal Expenses" box.
- Add other income: Enter your annual salary or business income. This is vital because Nigeria now taxes gains as part of your total income.
- Click Calculate: Press the green "Calculate Gains & Tax" button. The page will scroll down to your results.
- Review the breakdown: Look at the blue "Tax on Capital Gain" card for your bill and the grey "Net Gain" card for your take-home profit.
Who This Helps
| User Group | The Problem | The Benefit | Tip |
| Property Sellers | High agent fees eat into profits. | Identifies exact deductible expenses. | Save every receipt for renovations; they can sometimes reduce your taxable gain. |
| Stock Investors | Confusion over 2025 tax changes. | Uses the latest legal tax brackets. | If you sell shares for a loss, use this tool to document it for your records. |
| Small Business Owners | Selling equipment or office space. | Separates business tax from asset tax. | Always calculate tax before you spend the sale proceeds. |
Mistakes to Avoid
- Forgetting Other Income: If you leave "Other Annual Income" at zero, the tool might put you in a lower tax bracket than you actually belong to. Fix this by entering your gross annual salary.
- Mixing Gross and Net Sale Price: Users often enter the sale price after paying the agent. This is wrong. Enter the full price the buyer paid, then list the agent fee in the expenses box.
- Ignoring Exemptions: Don't pay tax on a personal car. The 2025 Act excludes motor vehicles from this specific tax.