Osun Internal Revenue Service

03/04/2026

Osun Internal Revenue Service (OIRS) Joins Governor Ademola Adeleke and Christians in Easter Celebration

The Osun Internal Revenue Service (OIRS) has extended warm Easter greetings to the Executive Governor of Osun State, His Excellency Senator Ademola Adeleke, Christians across the state, and all stakeholders.

In a statement issued on behalf of the Acting Chairman, Hon. Solanke-Hamzat, the Service congratulated the Governor, the OIRS Management Committee, members of staff, esteemed taxpayers, valued stakeholders, and all revenue-generating agencies on the occasion of the Easter celebration.

The statement noted that as the Lenten season comes to an end, citizens are encouraged to continue to embody the virtues of courage, faith, wisdom, and purpose, which are central to the Easter message.

OIRS further urged citizens to support the government by fulfilling their civic responsibilities, particularly in the area of tax compliance to promote the socio-economic development of Osun State.

Signed

Hon. Solanke-Hamzat
Ag Chairman (OIRS)

01/04/2026

‎PUBLIC NOTICE🔊 : OSUN INTERNAL REVENUE SERVICE EXTENDS DEADLINE FOR FILING OF 2025 INDIVIDUAL ANNUAL TAX RETURNS TO 30TH APRIL, 2026
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‎Weblink for online filling: https://irs.os.gov.ng/individual-annual-tax-returns/
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‎Weblink for individual filling template: https://irs.os.gov.ng/download/individual-tax-returns-template/

27/03/2026

‎Today we celebrate 🥳 🥂 🥳 Prince Abimbola Oyebowale, a Board Member in the Agency. Here is wishing you abundant blessings and wisdom for the rest of your life 🙏. Happy Birthday sir 🎂 🎈
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‎Greetings from the entire Staff and Management of Osun Internal Revenue Service.

20/03/2026

Osun Internal Revenue Service Felicitates with Gov. Ademola Adeleke and Others on Eid-Fitr

By Adebowale Adedokun, OIRS Information Office

The Osun Internal Revenue Service (OIRS), on behalf of its Acting Chairman, Hon. Solanke-Hamzat, extends warm felicitations to the Executive Governor of Osun State, His Excellency, Senator Ademola Jackson Nurudeen Adeleke, the OIRS Management Committee, staff members, valued taxpayers, key stakeholders, and all revenue-generating agencies on the occasion of Eid al-Fitr.

As the holy month of Ramadan comes to an end, the Service urges all citizens to uphold the enduring values it represents—patience, perseverance, unity, discipline, self-control, compassion, empathy, forgiveness, and gratitude.

In the spirit of the celebration, OIRS calls for continued support for the government, sustained observance of civic responsibilities, and strengthened cooperation with the Service. This collective effort is essential to enhancing the revenue base of Osun State and achieving sustainable socio-economic development.

20/03/2026

Happy Eid Ul-Fitr, we extend our warmest wishes to the Muslim ummah and the general public. May this Eid bring you joy, peace, and cherished moments with loved ones. Eid Mubarak from all of us at Osun Internal Revenue Service. 🕌
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27/02/2026

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‎Photo news: Osun State wins national tax debate
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‎Miss Alaba Mercy, a student of Ebunoluwa School, representing Osun State has emerged champion of the 2026 National Secondary School Tax Debate Competition organised by the Society of Women in Taxation (SWIT).
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‎Mercy was adjudged the best debater among 10 contestants drawn from Osun, Enugu, Bauchi, Delta and Benue.
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‎Main news culled from Guardian Newspapers
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‎Miss Alaba Mercy of Osun State has emerged champion of the 2026 National Secondary School Tax Debate Competition organised by the Society of Women in Taxation (SWIT).
‎The debate topic was “Simplifying tax laws will encourage more citizens to comply.”
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‎Mercy was adjudged the best debater among 10 contestants drawn from five states—Osun, Enugu, Bauchi, Delta and Benue. Miss Aisha Ibrahim Abubakar of Bauchi State placed second, while Miracle, the second speaker from Delta State, finished third.
‎The competition, now in its fourth edition, also saw Osun State emerge as the best overall state in the states category, with Delta and Enugu taking second and third positions respectively.
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‎Speaking during the grand finale, which was held virtually at the weekend, the sixth National Chairperson of SWIT, Dr Caroline Ndubuisi, said the competition was designed to sensitise young people—especially females—on the ongoing tax reforms in the country.
‎She described the debate as more than an intellectual exercise, noting that it represents a strategic investment in the future of taxation, governance and national development.
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‎“By engaging young female students in conversations around taxation, we are nurturing critical thinking, civic responsibility, leadership and confidence—qualities essential for building a stronger and more compliant tax culture in Nigeria,” she said.
‎Ndubuisi, who is also a member of the governing council of the Chartered Institute of Taxation of Nigeria (CITN), said the topic was timely, stressing that simplifying tax laws would encourage compliance, promote transparency and reduce the cost of compliance.
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‎She announced that the winner would be crowned the fourth SWIT Tax Ambassador at the society’s forthcoming tax summit in March.
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26/02/2026

‎Special Birthday wishes 🎉💐💐💐🥳🎉💐🎉 to our Director of Legal Services, Mrs Wuraola Diekololami Ogunkola. Wishing you pleasant surprises in the years ahead.
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‎Greetings from the entire Staff and Management of Osun Internal Revenue Service.
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11/02/2026

Download the Provisions of the new Tax Reform Act by Professor Adebayo using the link below

PROVISIONS OF THE NEW TAX REFORM ACT AND ITS IMPLICATIONS FOR THE BUSINESS COMMUNITY BY Professor Adebayo OLAGUNJU (Ph.D, M.Sc. MBA, PGD. COMP.SCIENCE, B.Sc.HONS, FCA, ACTI, CNA, CFA, FCCrFA, MFRC, CPA, AMNIM, MITMFAN) This Presentation will explore the critical responsibilities of the Government...

11/02/2026

WE ARE NOW LIVE AT DAY 2 OSUN INTERNAL REVENUE SERVICE - 3 DAY STAKEHOLDER ENGAGEMENT ON THE IMPLEMENTATION OF THE NEW TAX LAW IN OSUN STATE. AT THE CENTRE FOR BLACK ART AND CULTURE
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‎Follow the link below to watch and follow our Official page
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‎https://www.facebook.com/share/v/1FBGdiuQka/
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11/02/2026