Crypto Tax in Nigeria: What FIRS Expects You to Declare in 2026

Nigeria's crypto tax framework is no longer theoretical. The Federal Inland Revenue Service (FIRS) confirmed in an August 2024 guidance note that gains from digital asset disposals are chargeable to Capital Gains Tax (CGT) at a flat rate of 10%, and the agency has since signalled that it is building data pipelines to receive annual transaction summaries from ARIP-licensed exchanges. For the estimated 13.7 million Nigerians who hold or trade digital assets, that shift from informal tolerance to active collection infrastructure changes the practical stakes considerably.

This guide explains exactly what FIRS considers a taxable event, how gains are calculated, which records you need to keep, and what the compliance landscape looks like heading into the 2026 tax year.

What Is the Legal Basis for Taxing Crypto in Nigeria?

The operative statute is the Capital Gains Tax Act (Cap C1 LFN 2004), which imposes a 10% charge on chargeable gains arising from the disposal of chargeable assets. Digital assets were not explicitly listed in the Act when it was originally enacted, but the FIRS August 2024 guidance note resolved that ambiguity by confirming that digital assets, including bitcoin, ether, USDT and other cryptocurrencies, constitute chargeable assets for CGT purposes.

The guidance note does not carry the force of primary legislation, but it is consistent with the broad definition of "chargeable asset" in section 2 of the CGT Act, which covers property of every description. Nigerian courts have not yet tested this interpretation, and the ISA 2025 does not amend the CGT Act directly. Nonetheless, FIRS's position is clear, and practitioners at leading Lagos law firms have been advising clients to file accordingly since the fourth quarter of 2024.

The personal income tax angle is separate. Where a Nigerian engages in crypto trading as a business activity — rather than holding assets as investments — profits may be chargeable under the Personal Income Tax Act (PITA) as trading income rather than under the CGT Act. The 10% CGT rate is generally more favourable than the top PITA band of 24%, but classification depends on the pattern of activity. Frequent, high-volume P2P trading is more likely to be treated as a trade than periodic disposal of a long-held BTC position.

What Counts as a Taxable Event Under FIRS Rules?

This is the question that generates the most confusion, because the FIRS guidance follows an approach that is broader than many Nigerian crypto holders expect.

Disposal to naira or foreign currency. Selling bitcoin, USDT, or any other digital asset for naira or dollars is a disposal. The chargeable gain is the difference between the disposal proceeds and the allowable cost (the price paid at acquisition, in naira). Exchange rate movements between the acquisition date and disposal date are factored in, which means a long-held dollar-denominated asset can produce a large naira gain purely from naira depreciation.

Crypto-to-crypto swaps. The FIRS guidance treats every swap of one digital asset for another as a simultaneous disposal and reacquisition. If you swap USDT for ETH, you have disposed of your USDT at its naira value on the date of the swap and acquired ETH at that same naira value as your new cost base. This approach mirrors the position of the United Kingdom's HMRC and was specifically flagged in the FIRS note. It means that yield farmers and DeFi users who rotate assets frequently could accumulate significant CGT liabilities without ever touching naira.

Stablecoin conversions. USDT and USDC are not exempt simply because they are pegged to the dollar. FIRS treats them as chargeable assets. Where a Nigerian buys USDT at ₦1,500 per dollar and later swaps or sells when the parallel rate has moved to ₦1,620, the ₦120 per unit spread may constitute a chargeable gain. Practically, gains on stablecoins held short-term tend to be small, but the legal obligation to declare them exists.

Using crypto to pay for goods or services. A payment made in bitcoin or USDT is treated as a disposal at the market value of the asset on the date of payment. This is theoretically relevant but rarely material in practice for most retail users.

The following do not constitute disposals: transferring assets between your own wallets (with clear documentation that both addresses belong to you), receiving crypto as a gift from a family member (though the recipient inherits the donor's cost base), and unrealised gains on assets you continue to hold.

How Is the Chargeable Gain Calculated?

The formula is straightforward: disposal proceeds minus allowable cost equals the chargeable gain.

Allowable cost includes the acquisition price, plus incidental costs of acquisition and disposal (exchange fees, transfer fees, gas fees on Ethereum-based transactions). The FIRS guidance permits these deductions, though documentation is required.

Where assets were acquired in batches at different prices, the default identification rule under Nigerian CGT practice matches disposals against acquisitions on a first-in, first-out (FIFO) basis unless the taxpayer can demonstrate otherwise.

A worked example. A Lagos professional buys 1 BTC in January 2025 at a total cost of ₦95,000,000 (inclusive of exchange fees). By March 2026, the price has risen and she sells that BTC for ₦148,000,000. Her chargeable gain is ₦53,000,000. CGT payable at 10% is ₦5,300,000. The annual CGT exemption of ₦10,000 (set in the 1960s and never indexed) is so small as to be irrelevant in practice.

For stablecoins, the calculation is complicated by naira volatility. A trader who bought ₦10,000,000 worth of USDT at ₦1,490 per dollar (6,711.4 USDT) and later sold the same USDT at ₦1,590 per dollar receives ₦10,671,126. The chargeable gain is ₦671,126, and CGT at 10% would be ₦67,113. Most retail holders are not making these calculations, but FIRS's data-sharing architecture with licensed exchanges means the information will increasingly be available to the agency.

What Records Must You Keep?

FIRS has not yet published a specific crypto record-keeping format, but the general requirements of the CGT Act and the FIRS Taxpayer Education programme apply. At minimum, taxpayers should maintain:

The date and amount paid for each acquisition, in naira at the prevailing exchange rate. The date and amount received for each disposal, again in naira. Receipts or statements from exchanges confirming transaction details. Wallet transaction histories for any on-chain activity. Records of exchange fees and network fees.

The standard retention period under Nigerian tax law is six years. Given that most exchanges already provide downloadable transaction histories in CSV format, the practical burden is lower than it sounds, provided the records are collected contemporaneously rather than reconstructed years later.

Is FIRS Actually Enforcing This?

The honest position as of mid-2026 is that enforcement is building rather than fully operational.

The FIRS August 2024 guidance created the legal framework. The data-sharing infrastructure with ARIP-licensed exchanges was signalled in the same document but had not been gazetted with specific reporting thresholds as of the date of this article's publication. The SEC's ARIP regime, as confirmed under the ISA 2025, now requires licensed exchanges to maintain full transaction records for seven years — records that FIRS can request under existing inter-agency data-sharing powers without any new legislation.

The FIRS also has access to EFCC and CBN transaction monitoring data where crypto activity intersects with the banking system. Bank transfers to and from P2P platforms are visible to both the CBN (under its 2023 VASP AML guidelines) and FIRS (through standard bank reporting channels). High-volume P2P traders who rely on informal anonymity face the greatest exposure as this infrastructure matures.

The most practical implication for ordinary Nigerians is prospective rather than retrospective. The probability of a FIRS audit of crypto gains from 2021 or 2022 — before the formal framework — is low. The probability of enforcement on 2025 and 2026 gains, particularly for users of ARIP-licensed exchanges, is meaningfully higher and rising.

What Should You Do Before the 2026 Filing Deadline?

CGT returns in Nigeria follow the same annual cycle as other tax obligations. For individuals, the relevant return is filed with FIRS and the State Internal Revenue Service of the taxpayer's state of residence. The standard deadline for 2025 income-year CGT returns is 31 March 2026, though FIRS has extended deadlines in prior years. For the 2026 income year, the deadline will fall in the first quarter of 2027.

Three practical steps are advisable now. First, export transaction histories from every exchange you use — Nigerian or international. Most major platforms retain data for several years and allow bulk CSV exports. Second, identify any crypto-to-crypto swaps you made, as these are the most commonly overlooked disposal events. Third, if your total gains from digital assets for the 2025 income year exceeded ₦5,000,000, engage a Lagos-based tax adviser familiar with digital asset taxation before the filing window.

The FIRS has a taxpayer education unit and a self-assessment portal at firs.gov.ng. CGT returns can be filed online, and the agency has published a general guide to CGT that applies to all chargeable assets. No crypto-specific filing form had been released as of June 2026, so practitioners are using the standard CGT form with supplementary schedules.

For a full breakdown of the SEC and CBN regulatory environment in which these tax obligations sit, see our guide to crypto regulation in Nigeria.

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Regulatory note: This article references the Capital Gains Tax Act (Cap C1 LFN 2004), the FIRS guidance note of August 2024 on digital asset taxation, the Investments and Securities Act 2025, and guidance published by the Central Bank of Nigeria and Securities and Exchange Commission of Nigeria. All primary documents are available on the official websites of the respective agencies at firs.gov.ng, cbn.gov.ng, and sec.gov.ng. The Cowrie Report is an independent editorial publication. It does not hold a financial services licence, an ARIP registration, or any authorisation from the CBN, SEC, or FIRS, and nothing in this article constitutes financial, investment, legal, or tax advice. Readers with specific tax obligations should consult a qualified tax professional licensed in Nigeria.