Dangote IPO and Tax: What Every Nigerian Investor Needs to Know Before October 13

The Dangote Petroleum Refinery IPO opened on September 14, 2026 at ₦525 per share with a minimum subscription of ₦5,250 for 10 shares. The offer closes October 13, 2026 and shares are expected to begin trading on the Nigerian Exchange in November. At ₦2.15 trillion in targeted proceeds, this is the largest share sale in African history. Thousands of everyday Nigerians are subscribing right now and almost none of them are thinking about what happens from a tax perspective when those shares eventually make them money. This article covers every tax implication of the Dangote IPO that retail investors need to know before they subscribe and before they sell.

Quick Summary

• Capital Gains Tax applies when you sell your shares at a profit — gains are taxed at progressive PIT rates under the NTA 2025, not a flat 10%
• Most retail investors are fully exempt from CGT — if you sell less than ₦150 million worth of shares in a year and your profit does not exceed ₦10 million, you pay zero
• Dividends attract 10% Withholding Tax — automatically deducted before you receive payment, but the WHT certificate is a tax credit you can use when you file
• The reinvestment exemption is powerful — reinvest your proceeds into another Nigerian company and your CGT liability is zero with no upper limit
• Selling shares may trigger a self-assessment filing obligation — especially for salary earners who have never needed to file a personal return before

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By now you have probably seen the Dangote IPO everywhere. ₦525 per share. Minimum 10 shares for ₦5,250. Africa's biggest IPO. Everyone from institutional investors to first-time retail investors is talking about whether to subscribe.

What almost nobody is talking about is the tax side.

The excitement around the Dangote Petroleum Refinery IPO is completely understandable. The refinery reported net income of $1.82 billion in the first half of 2026, a dramatic turnaround from a $476 million loss across the whole of 2025. The numbers are compelling. But Nigerian investors are making subscription decisions right now without any understanding of how their eventual gains will be taxed, what happens to their dividend income, or whether buying shares might change their tax filing obligations entirely.

This article changes that.

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What Kind of Investment This Actually Is

Before getting into the tax treatment, it helps to be clear about what you are buying.

The Dangote Petroleum Refinery and Petrochemicals IPO is offering 4.1 billion ordinary shares in the refinery itself. This is not the same as Dangote Cement, Dangote Sugar, or Dangote Industries. It is a separate company that owns and operates the 700,000 barrel-per-day refinery in Ibeju-Lekki, Lagos.

At the offer price the refinery is valued at roughly ₦65.22 trillion, about $49 billion. The offer closes on October 13, 2026 and shares are expected to begin trading on the Nigerian Exchange in November.

Aliko Dangote retains roughly 89.25% of the refinery after the offer. You are buying into a minority stake in what is now Africa's largest single-train refinery.

Now here is how your investment is treated under Nigerian tax law.

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Tax Implication 1: Capital Gains Tax When You Sell

The first tax event that matters to most investors is not the subscription itself. It is what happens when you eventually sell your shares at a profit.

Under the Nigeria Tax Act 2025, the profit from selling shares is classified as a chargeable gain. For individual investors, that gain is added to your total income for the year and taxed at the progressive Personal Income Tax rates. These are: zero on the first ₦800,000 of total annual income, 15% on the next ₦2.2 million, 18% on the next ₦9 million, 21% on the next ₦13 million, 23% on the next ₦25 million, and 25% on income above ₦50 million.

This is not the flat 10% Capital Gains Tax that most Nigerians have heard about from the old law. The old Capital Gains Tax Act has been repealed by the NTA 2025. The rates are now progressive and they depend on your total income for the year, not just the gain itself.

But here is the most important exemption most retail investors qualify for:

If you sell company shares worth less than ₦150 million in a year and your profit on that sale does not exceed ₦10 million, you pay zero Capital Gains Tax. The entire gain is exempt.

For anyone investing at the minimum of ₦5,250 or anything close to it, this exemption covers you completely. You can sell at any profit and owe nothing in CGT as long as the total value of shares sold stays below ₦150 million and the gain stays below ₦10 million.

Only investors putting hundreds of millions into this IPO need to actively plan around the CGT threshold.

You can read more about how Capital Gains Tax changed under the new law in our article on what changed under the Nigeria Tax Act 2025.

Tax Implication 2: The Reinvestment Exemption

This is the provision that most Nigerian investors do not know exists and it is one of the most valuable in the entire NTA 2025 for investors.

If you sell your Dangote Refinery shares and reinvest the entire proceeds into another Nigerian company, your Capital Gains Tax liability on that sale is completely exempt. No upper limit applies. No minimum holding period. No ceiling on the profit that can be sheltered. If the proceeds go into another Nigerian company, the CGT exemption applies in full.

This means an investor who buys Dangote Refinery shares, sells them for a significant profit in 2027 or 2028, and immediately reinvests the full proceeds into another listed Nigerian company pays zero Capital Gains Tax on that gain regardless of how large it is.

For long-term investors thinking about portfolio management across Nigerian equities, this exemption should be part of every investment decision from the moment the shares start trading.

Tax Implication 3: Dividend Withholding Tax

When the Dangote Refinery declares dividends to shareholders, those dividends are subject to 10% Withholding Tax before they reach your account.

If you are owed ₦100,000 in dividends, ₦10,000 is deducted at source and remitted to the NRS on your behalf, and ₦90,000 lands in your account. This is automatic. It happens before you see the money. You cannot opt out.

What you can do is collect your Withholding Tax credit certificate from your broker after each dividend payment. That certificate represents a tax credit that you can use against your annual Personal Income Tax liability when you file. If your total tax bill for the year is ₦50,000 and you have ₦10,000 in WHT credits from dividends received, you only owe ₦40,000 when you file.

Most Nigerian retail investors receive their WHT certificates, have no idea what they are, and throw them away. Those certificates are worth money. Keep every one of them.

Tax Implication 4: The Self-Assessment Filing Obligation

This one catches many first-time investors off guard and it is worth being very clear about.

If you are a salaried Nigerian whose only income has always come from your employer and your employer has always handled your PAYE, you may never have filed a personal income tax return in your life. Your PAYE covered your tax obligation and nobody asked you for anything else.

The moment you sell your Dangote Refinery shares and make a profit, that changes.

Share sale gains are income that your employer's PAYE does not cover. They trigger a self-assessment filing obligation. You must declare the gain in your Personal Income Tax return by March 31 of the year following the sale. A gain made in 2027 must be declared by March 31, 2028.

If you also receive dividends from your shares, those should be declared in the same return for the year they were received.

For many Nigerian retail investors, buying shares in the Dangote IPO will be the first time in their lives that they need to file a personal tax return. Knowing this before the shares start trading in November is significantly better than discovering it in March.

Our guide on why most Nigerians file tax late and how to fix it covers everything you need to know about the self-assessment process and how to avoid the ₦50,000 penalty for missing the deadline.

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Tax Implication 5: Your TIN and BVN Must Be Aligned

To participate in the Dangote IPO, you need a CSCS account with a licensed stockbroker. That account is linked to your BVN. Under the NTA 2025, share transactions above certain thresholds are being cross-referenced against tax registration records.

Your Tax Identification Number is now linked to your NIN, which is linked to your BVN. If there is any mismatch between these records, it can create complications when you sell your shares and need to file your returns.

Before you subscribe or immediately after, verify that your TIN is correctly registered. You can verify your TIN at taxid.jrb.gov.ng using your NIN or BVN. This takes five minutes and removes a potential complication down the line.

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The Bottom Line for Retail Investors

For most everyday Nigerians subscribing at or near the minimum, the tax picture is actually straightforward.

You will owe zero Capital Gains Tax when you sell unless your profit exceeds ₦10 million. Your dividends will arrive with 10% already deducted and you will receive a credit certificate for that amount. If you sell at a profit, you will need to declare it in a self-assessment return the following March.

The investors who need to think more carefully are the ones putting significant sums in, those whose combined share sale gains across all investments might approach the ₦10 million threshold in a year, and those who want to use the reinvestment exemption strategically to shelter larger gains.

For everyone else, the most important thing is keeping your documentation clean: your CSCS statements, your WHT certificates, and records of what you paid for your shares and what you received when you sold them. That documentation is what makes the filing process straightforward when March comes around.

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This article is for informational purposes only. It is not investment or financial advice. For guidance specific to your tax situation, consult a registered tax consultant. Always read the full prospectus before investing in any IPO.

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Taxidy is built by Nigerians who understand exactly how confusing this system is.

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Sources: Dangote Petroleum Refinery and Petrochemicals IPO Prospectus, September 2026. Nigeria Tax Act 2025, Sections 4, 56, 57, 58, 163. Securities and Exchange Commission Nigeria, IPO Approval Notice, September 2026. Bloomberg, Dangote IPO Opens at $49 Billion Valuation, September 14, 2026. Daba Finance, Dangote Refinery IPO Complete Guide, September 2026. Cowrywise Blog, Dangote IPO 2026, September 2026.