Tax Overtakes Oil in Landmark Fiscal Shift
Nigeria has effectively ended its era as a mono-product oil economy. New data from Quartus Economics reveals that between 2010 and 2024, the federation earned N161.1 trillion, with non-oil streams now providing the majority of government income. For the first time in decades, tax and non-oil revenues have eclipsed crude oil as the primary pillars of the national budget. This transition marks a fundamental decoupling of state survival from the volatile swings of global energy markets.
The collapse of the old order began with the 2014 global oil price crash. Before that shock, oil accounted for nearly three-quarters of public revenue. A decade of subsequent economic pain saw GDP per capita plunge from $4,000 to roughly $1,120, pushing 65 million more Nigerians into poverty. This decade of hardship forced a pivot toward aggressive tax reforms and improved collection mechanisms. The result is a more resilient, if heavily taxed, fiscal state.
Tax collection has moved from a trickle to a flood in just three years. Between 2022 and 2025, tax revenue nearly tripled, rising from N10.18 trillion to a staggering N28.29 trillion. By the end of 2024, oil’s contribution to the federation account had shrivelled to just 25.8 per cent. Non-oil taxes now account for 75.9 per cent of all federally collected taxes, a complete reversal of the 2010 landscape where oil dominated 74 per cent of the purse.
Despite the surge in revenue, a massive debt overhang threatens to neutralise these gains. As oil income evaporated after 2014, the government borrowed heavily to plug holes and build infrastructure. Nigeria’s debt-to-GDP ratio has more than tripled over the last ten years. Debt service, which consumed less than 7 per cent of revenue in 2012, now swallows nearly 40 per cent. The state is earning more than ever, but much of it is already spoken for by creditors.
The shift towards a tax-driven state places a new burden of accountability on the government. When the state lived on oil rents, it could afford to ignore the taxpayer. Now that nearly 87 per cent of total revenue comes from taxes, the social contract has shifted. Citizens are funding the federation’s operations directly through the non-oil sector, which contributed over 70 per cent of the N62 trillion earned in taxes between 2023 and 2025.
Nigeria’s fiscal diversification appears stable but remains modest relative to the country’s needs. While tax collections by the end of 2025 were five times higher than 2019 levels, the economy is still recovering from a “lost decade” of stagnant growth. The “unshackling” from oil provides a more predictable budget, but the high cost of debt and a weakened currency mean the fiscal authorities have little room for error. The commodity-dependent past is gone; a tax-burdened future has arrived.