Washington is gutting tax enforcement just as Abuja is building it. For Nigeria’s $18 billion annual tax wound, the timing couldn’t be worse.
THE COLLISION COURSE
Washington’s trajectory differs sharply from Abuja’s emerging policies. In Washington, ICIJ data shows that the IRS referred at most two criminal cases involving possible tax evasion by ultrawealthy individuals or large corporations in fiscal year 2025.
The Global High Wealth office — the unit specifically tasked with auditing billionaires — lost 38 per cent of its staff within weeks of Donald Trump taking office. Investigations into abusive tax schemes dropped 63 per cent. Enforcement has been weakening since 2019, but the current decline is among the sharpest in recent history.
In Abuja, meanwhile, the Nigeria Revenue Service (NRS) — formerly the Federal Inland Revenue Service (FIRS), renamed under sweeping tax reforms effective January 1, 2026 — is rolling out the most ambitious tax overhaul in the country’s history.
The Nigeria Tax Act, signed by President Bola Tinubu on June 26, 2025, introduces a 15 per cent global minimum effective tax rate on multinationals, controlled foreign company rules, top-up taxes on profit-shifting, and mandatory e-invoicing for real-time VAT tracking.
Nigeria is building. America is scaling back. The impact falls squarely on the multinational corporation operating in Nigeria, booking its profits elsewhere and paying as little tax as possible to anyone.
WHAT THE IRS DECLINE ACTUALLY MEANS
Between October 2025 and January 2026, the IRS Large Business and International division referred no cases of ultra-wealthy tax cheating to criminal investigators — the lowest level since fiscal year 2019.
Between January and May 2025 alone, the IRS workforce shrank by 25 per cent. Its Criminal Investigation Division lost approximately 10 per cent of its staff. Many agents were formally retasked from tax enforcement to immigration and crime task forces — away from their typical duties investigating terrorists, drug dealers, human traffickers, and ultra-wealthy tax evaders.
It is worth noting that IRS underfunding and resource constraints have been long-standing issues across multiple administrations — not solely a product of the current political moment. But the speed and scale of the current cuts, and the deliberate retasking of investigators away from financial crime, mark a qualitative shift that goes beyond budget pressures.
The financial cost is high even by American standards. For every dollar spent, IRS Criminal Investigation has historically brought in $16 in direct returns, with past cases recovering hundreds of millions from tax evasion schemes.
This $16 return per dollar spent is now being sacrificed by political choice.
NIGERIA’S $18 BILLION WOUND
Nigeria is not a bystander in global tax evasion. It is one of its primary victims. The Federal Government has documented that the country loses approximately $18 billion annually — roughly ₦28 trillion at current rates — to profit shifting and tax avoidance by multinational corporations operating in Nigeria. These are not small or obscure operators. They include some of the world’s largest companies in oil and gas, telecoms, banking, consumer goods, and technology — many with American parent companies or US-listed structures.
Global tax enforcement relied on cooperation and shared deterrence from strong agencies like the IRS. With this deterrent now weakened, multinational tax avoidance faces less resistance.
THE INFORMATION-SHARING SLOWDOWN
The United States remains the world’s largest producer of financial intelligence. FATCA reporting and treaty exchanges continue — the pipeline has not been switched off. But reduced staffing means slower processing, weaker follow-through on leads, and a shrinking capacity to act on the information that does flow.
With the loss of high-net-worth IRS investigators, ongoing investigations freezing, and audits being delayed in favour of multinationals, Nigeria is now seeking to tax with new minimum tax rates.
THE DOUBLE STANDARD NIGERIA CAN WEAPONISE
For decades, Western powers — led by the United States — have pressured African nations to tighten tax compliance, reduce evasion, and align with global best practices. Nigeria has, to its considerable credit, increasingly done so. The Nigeria Tax Act 2025 is Exhibit A.
Yet, at the same time, the most powerful government on earth is deliberately and publicly scaling back its enforcement against the wealthy. Republican supporters of the Trump cuts argued that the Biden-era IRS had been “out of control” — that pursuing tax evasion by billionaires was “weaponisation of the federal government.”
This gives Nigeria powerful leverage in international tax negotiations. At the UN Tax Committee, the G20, and the African Union’s tax forums, Nigeria’s negotiators can now argue with hard evidence that the global tax compliance problem is not an African failure — it is a systemic failure in which the world’s wealthiest nations are willing and documented participants.
WHAT NIGERIA MUST DO NOW
The IRS decline does not mean Nigeria should slow its reforms. It means Nigeria must pursue them with greater self-reliance — because the external enforcement support it might have counted on is contracting. Four immediate priorities stand out:
1. Double down on domestic intelligence. The NRS e-Invoicing platform, launched in July 2025, is the right instinct — real-time transaction tracking reduces the window for multinationals to manipulate Nigerian revenue declarations before data reaches foreign regulators.
2. Accelerate African tax cooperation. Nigeria cannot rely solely on Washington. It must accelerate information-sharing with the African Tax Administration Forum and build bilateral agreements with major African economies. An Africa-wide enforcement network is more reliable right now than a hollowed-out IRS.
3. Ratify the MLI immediately. Nigeria adopted the Multilateral Convention to Implement Tax Treaty Measures in 2017, but has never domestically ratified it. Without ratification, Nigeria’s Double Taxation Agreements remain vulnerable to the very treaty abuse the convention is designed to prevent.
4. Name names publicly. The NRS has begun issuing assessments to international petroleum companies and non-resident corporations. It should publish those assessments — names, amounts claimed, and outcomes — in accessible public registers, not just legal gazettes.
THE BOTTOM LINE
Washington’s enforcement cuts impact Nigeria directly via complex corporate structures, transfer pricing schemes, and offshore accounts, compounding a persistent $18 billion annual loss. Multinationals and their tax lawyers are already aware of these dynamics. The question is whether Abuja will maintain its reform trajectory independently. The answer will determine how much of Nigeria’s wealth stays in Nigeria.
EDITOR’S NOTE: This analysis is based on data published by the International Consortium of Investigative Journalists (ICIJ), official Nigerian tax reform documents, and filings from the Nigeria Revenue Service (NRS). TheDiggerNews.com welcomes responses from the Nigeria Revenue Service, the Federal Ministry of Finance, and any multinational corporation operating in Nigeria that wishes to address the issues raised in this piece. Contact: thediggernews03@gmail.com