Only 18.75% Lagos Residents Are Registered Taxpayers — LIRS Reveals January 31, 2020 Sylvester Gistlover 0 Lagos Inland Revenue Service (LIRS) has said that only 4.5 million or 18.75 percent of the 24 million people resident in Lagos State, representing 18.75 percent are registered, taxpayers. Executive Chairman, Lagos Inland Revenue Service