Joe Adinma & Co.

Nigeria Tax Filing Calendar

A complete compliance reference under the Nigeria Tax Act (NTA) 2025 and Nigeria Tax Administration Act (NTAA) 2025, effective 1 January 2026. Administered by the Nigeria Revenue Service (NRS).

4 Monthly Obligations
6 Annual Deadlines
4 Petroleum-Specific
⚡ PRACTITIONER ALERT:

The monthly CIT instalment payment regime under NTAA 2025 applies exclusively to upstream petroleum companies (Hydrocarbon Tax/PPT — Sections 16 & 50, NTAA). General CIT companies continue on annual self-assessment payment at filing (30 June for December year-ends). This is widely misreported in commentary.

Next Upcoming Deadlines
13
days remaining
PAYE Remittance
10 August 2026
17
days remaining
Petroleum Royalties (Monthly Return)
14 August 2026
24
days remaining
VAT Returns & Remittance
21 August 2026

Annual Obligation Density

Jan
5
Feb
5
Mar
5
Apr
4
May
5
Jun
7
Jul
4
Aug
4
Sep
4
Oct
4
Nov
4
Dec
5

Numbers indicate tax obligations per month

Showing 15 of 15 obligations

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MONTHLY Employment Tax

PAYE Remittance

10th of every month · State IRS (e.g. RIRS)

⏱ 13d left

Employers must remit PAYE deductions from employee salaries to the relevant State Internal Revenue Service by the 10th of the following month.

Penalty for Default

40% of undeducted amount; 10% p.a. + CBN MPR interest on unremitted amounts

Legal Authority

S.14 NTAA 2025

Next occurrence 10 August 2026
MONTHLY Indirect Tax

VAT Returns & Remittance

21st of every month · NRS

24d left

All VAT collected on taxable supplies for the preceding month must be filed and remitted by the 21st of the following month. Small businesses with annual turnover not exceeding ₦100 million and fixed assets below ₦250 million are exempt from VAT filing — but this exemption does not apply to businesses providing professional or specialised services.

Penalty for Default

₦100,000 first month; ₦50,000 each subsequent month + 10% p.a. administrative penalty

Legal Authority

S.22 NTAA 2025

Next occurrence 21 August 2026
MONTHLY Deduction at Source

Withholding Tax (WHT) Remittance

21st of every month · NRS

24d left

WHT deducted from payments to suppliers, professionals and service providers must be remitted to the NRS. Key rates: 5% (professional/consulting services), 2% (goods & construction). Credit notes are issued to recipients for offset against CIT.

Penalty for Default

40% of undeducted amount; 10% p.a. penalty + CBN MPR interest on late remittance

Legal Authority

S.28 & S.107 NTAA 2025

Next occurrence 21 August 2026
MONTHLY Petroleum & Extractives

Petroleum Royalties (Monthly Return)

14th of every month · NRS

⏱ 17d left

Monthly royalty returns for upstream petroleum companies (crude oil, condensates, LNG/LPG). Note: Mining operators and non-resident shipping/airline companies file by the 21st.

Penalty for Default

₦10,000,000 first day of default; ₦2,000,000 each subsequent day

Legal Authority

S.18 NTAA 2025

Next occurrence 14 August 2026
ANNUAL Employment Tax

Employers' Annual PAYE Returns

31 January · State IRS

187d

All employers must file detailed annual returns disclosing gross emoluments, allowances, benefits in kind, total deductions, net emoluments, and tax deducted for every employee in the preceding year. Distinct from monthly PAYE remittances.

Penalty for Default

₦100,000 first month; ₦50,000 each subsequent month

Legal Authority

S.14 NTAA 2025

Next occurrence 31 January 2027
ANNUAL Personal Tax

Personal Income Tax (PIT) Annual Returns

31 March · State IRS

246d

Every individual — including salaried employees whose PAYE has already been deducted — must file a self-assessment return. Self-employed persons, business name owners, and directors pay PIT directly. Income includes employment income, rental income, business profits, digital asset gains, prizes, and honoraria.

Penalty for Default

₦100,000 first month; ₦50,000 each subsequent month + CBN MPR interest

Legal Authority

S.13 NTAA 2025

Next occurrence 31 March 2027
ANNUAL Corporate Tax

CIT Annual Returns — December Year-End

30 June · NRS

337d

Every company must file a self-assessment CIT return comprising: (a) audited financial statements — small companies may substitute an attested statement of accounts; (b) tax and capital allowances computation; (c) computation of effective tax rate; (d) top-up tax computation where ETR < 15% (applies to companies with turnover ≥ ₦20 billion or MNE group constituent entities); and (e) evidence of payment of tax due. Filing obligation applies even to loss-making and dormant companies. Small companies — defined as annual turnover ≤ ₦100 million and fixed assets ≤ ₦250 million, excluding professional service firms — pay CIT at 0% but must still file.

Penalty for Default

₦100,000 first month; ₦50,000 each subsequent month of default

Legal Authority

S.11 NTAA 2025

Next occurrence 30 June 2027
ANNUAL Capital Gains

Capital Gains Tax — H1 Disposals

30 June · NRS / State IRS

337d

CGT on chargeable assets disposed of between January and June. Under NTA 2025, CGT for companies is now aligned at 30% (matching the CIT rate). Shares exempt where proceeds < ₦150 million and gain < ₦10 million in any 12-month window. Small companies (turnover ≤ ₦100 million, fixed assets ≤ ₦250 million, non-professional) are fully exempt from CGT.

Penalty for Default

₦100,000 first month; ₦50,000 each subsequent month

Legal Authority

S.33–40 NTA 2025

Next occurrence 30 June 2027
ANNUAL Levy

Development Levy Annual Returns

30 June · NRS

337d

Annual reconciliation and return for the 4% Development Levy filed concurrently with CIT returns. Assessable base is profits before capital allowances and losses. Exempt: small companies (turnover ≤ ₦100 million, fixed assets ≤ ₦250 million — but note professional service firms are not classified as small companies and remain liable). Non-resident companies are also exempt.

Penalty for Default

₦100,000 first month; ₦50,000 each subsequent month

Legal Authority

S.57 NTA 2025

Next occurrence 30 June 2027
ANNUAL Capital Gains

Capital Gains Tax — H2 Disposals

31 December · NRS / State IRS

156d

CGT on chargeable assets disposed of between July and December. Applies to property, shares (above exemption threshold), investment securities, digital assets, and other chargeable assets. Rate: 30% for companies; individual rates apply for individuals. Small companies (turnover ≤ ₦100 million, fixed assets ≤ ₦250 million, non-professional) are fully exempt.

Penalty for Default

₦100,000 first month; ₦50,000 each subsequent month

Legal Authority

S.33–40 NTA 2025

Next occurrence 31 December 2026
PETROLEUM Petroleum & Extractives

Upstream PPT/Hydrocarbon — Estimated Returns

28 February (2 months from year start) · NRS

215d

Upstream petroleum companies must submit estimated returns of profits/losses for the current accounting period within two months of commencement. Must include: estimated revenue, adjusted profit/loss, estimated assessable profits, capital expenditure schedule, and estimated tax payable.

Penalty for Default

₦10,000,000 first day; ₦2,000,000 each subsequent day

Legal Authority

S.16 NTAA 2025

Next occurrence 28 February 2027
PETROLEUM Petroleum & Extractives

Upstream PPT — Monthly Instalment Payments

End of each month (March–December) · NRS

The first monthly instalment is due by the end of the 3rd month (31 March). Subsequent instalments are due at month-end thereafter through to 31 December. Each instalment is a proportionate share of estimated annual liability. Where price, cost, or volume changes materially, revised estimated returns must be submitted monthly. The final balance instalment is due within 21 days of the NRS notice of assessment.

Penalty for Default

10% of late amount + 2% above CBN MPR interest; ₦10m first day + ₦2m/day for late returns

Legal Authority

S.16 & S.50 NTAA 2025

PETROLEUM Petroleum & Extractives

Upstream PPT — Actual (Final) Returns

31 May (5 months after year-end) · NRS

307d

Actual returns filed 5 months after end of accounting period, i.e. 31 May for a December year-end company. The final instalment (balance of assessed tax less all monthly instalments paid) falls due within 21 days of service of the NRS notice of assessment.

Penalty for Default

₦10,000,000 first day; ₦2,000,000 each subsequent day. Late payment: 10% + 2% above CBN MPR

Legal Authority

S.17 NTAA 2025

Next occurrence 31 May 2027
TRANSACTIONAL Transaction Taxes

Stamp Duties

On/before first execution; 30–40 days where ad valorem · NRS

Instruments first executed in Nigeria must be stamped on or before execution with adhesive stamps. Where subject to ad valorem duty: 30 days from first execution in Nigeria, or 30 days from first receipt in Nigeria if executed outside. Unstamped or insufficiently stamped instruments may be rectified within 40 days.

Penalty for Default

10% of unpaid duty + CBN MPR interest; up to ₦50,000 fine or 3 years imprisonment

Legal Authority

S.110–111 NTAA 2025

PETROLEUM Petroleum & Extractives

Annual Petroleum Royalties Return

5 months after accounting period end · NRS

Petroleum licence holders must file an annual return for all royalties paid during the accounting period no later than 5 months after the period ends (i.e., 31 May for December year-end companies).

Penalty for Default

₦10,000,000 first day; ₦2,000,000 each subsequent day

Legal Authority

S.19 NTAA 2025

Quick-Reference Summary Table

For December year-end companies — adjust proportionally for other year-ends

Tax / Obligation Frequency Deadline Authority Key Penalty
PAYE Remittance Monthly 10th of every month State IRS (e.g. RIRS) 40% of undeducted amount
VAT Returns & Remittance Monthly 21st of every month NRS ₦100,000 first month
Withholding Tax (WHT) Remittance Monthly 21st of every month NRS 40% of undeducted amount
Petroleum Royalties (Monthly Return) Monthly 14th of every month NRS ₦10,000,000 first day of default
Employers' Annual PAYE Returns Annual 31 January State IRS ₦100,000 first month
Personal Income Tax (PIT) Annual Returns Annual 31 March State IRS ₦100,000 first month
CIT Annual Returns — December Year-End Annual 30 June NRS ₦100,000 first month
Capital Gains Tax — H1 Disposals Annual 30 June NRS / State IRS ₦100,000 first month
Development Levy Annual Returns Annual 30 June NRS ₦100,000 first month
Capital Gains Tax — H2 Disposals Annual 31 December NRS / State IRS ₦100,000 first month
Upstream PPT/Hydrocarbon — Estimated Returns Monthly (upstream only) 28 February (2 months from year start) NRS ₦10,000,000 first day
Upstream PPT — Monthly Instalment Payments Monthly (upstream only) End of each month (March–December) NRS 10% of late amount + 2% above CBN MPR interest
Upstream PPT — Actual (Final) Returns Monthly (upstream only) 31 May (5 months after year-end) NRS ₦10,000,000 first day
Stamp Duties On transaction On/before first execution; 30–40 days where ad valorem NRS 10% of unpaid duty + CBN MPR interest
Annual Petroleum Royalties Return Monthly (upstream only) 5 months after accounting period end NRS ₦10,000,000 first day

Professional Disclaimer

This calendar is prepared by Joe Adinma & Co., Chartered Accountants (FCA, FCTI) as a professional reference guide based on the Nigeria Tax Act (NTA) 2025 and Nigeria Tax Administration Act (NTAA) 2025, effective 1 January 2026. Deadlines for companies with non-December year-ends shift proportionally. State Internal Revenue Service deadlines may vary slightly from NRS federal deadlines. This guide does not constitute formal tax advice — each engagement requires specific professional consideration. For tailored advisory, contact our office at Plot 500 East West Road, Rumuodara, Port Harcourt.

📋 Last Updated: June 2026 ⚖ Based on: NTA 2025 | NTAA 2025 | NRS Guidelines © Joe Adinma & Co.