
Tax Intelligence Centre
Plan compliance before deadlines become crises
Indicative calendars, official links and partner commentary—paired with our Insights centre for deeper briefings on reform and filing posture.
This calendar is indicative for planning only. Statutory due dates depend on your accounting year-end, company size, sector, and state rules. Always confirm with FIRS, your State Internal Revenue Service, or your KACERTIFIEX adviser before filing or paying.
Calendar last reviewed: 1 October 2025. Confirm dates with FIRS, your state revenue service or your KACERTIFIEX adviser before filing.
Indicative Nigeria tax calendar
Use this as a planning aid alongside your accounting year-end and state rules.
Every month
- By 21st (typical)
VAT return & payment (prior month)
FIRS
Due date can vary—check your FIRS portal and notices
- By 21st (typical)
Withholding tax (WHT) return & remittance
FIRS
Applies where WHT was deducted in the prior month
- By 10th / 21st (state rules)
PAYE remittance & schedules
State Internal Revenue Service
Deadline depends on your state—Lagos and others differ
Quarterly / periodic
- As notified
Companies Income Tax (CIT) instalments or assessments
FIRS
Based on company year-end and FIRS assessment cycle
- As notified
Education Tax / other sector levies
FIRS / regulators
Confirm applicability to your entity
Annual (typical triggers)
- 6 months after year-end (typical)
Companies Income Tax (CIT) filing & payment
FIRS
Verify your accounting year-end and any extensions
- Within statutory window
Annual returns & beneficial ownership updates
CAC
Penalties apply for late filing—confirm current CAC timelines
- As required
Audited financial statements & regulatory filings
Sector regulators / FIRS
Banks, insurance, and listed entities have additional deadlines
Budget & reform watch
- Q4 / Q1
Federal budget & finance bill measures
National Assembly / FIRS
Update tax provisioning and board scenarios after enactment
- Ongoing
FIRS notices, e-invoicing & compliance updates
FIRS
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Turn the calendar into an action plan
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