At N4,401.91 billion or 7.7 per cent of GDP, gross federally collected revenue for the first half of 2018 was 33.7 percent below the proportionate budget estimates but 47.1 percent above the level recorded in corresponding period of 2017.1 The difference in revenue, relative to the proportionate budget estimates, was driven by shortfalls in both oil and non-oil revenue components. The decline in oil revenue was due to a difference between the budgeted crude oil production benchmark of 2.3 million barrels per day (mbd) and the actual production of 1.90 mbd. An increase in crude oil price over the budget benchmark within the review period was insufficient to reverse the decreasing trend in oil revenue.