If your payroll still runs on the old formula, three things are probably wrong: it deducts a Consolidated Relief Allowance that no longer exists, it uses the pre-2026 tax bands, and it deducts the National Housing Fund from everyone. The Nigeria Tax Act 2025 and the Nigeria Tax Administration Act 2025 took effect on 1 January 2026, and this checklist walks through what to change and how to prove the change worked.

It is written for an employer or payroll officer who has about an hour. Work down it in order, tick each line, and keep a copy for your audit file. For the monthly routine itself, see how to run payroll step by step.

What changed, in one table

ItemBefore 2026From 1 January 2026
PAYE bands7% to 24%0% on the first ₦800,000, then 15%, 18%, 21%, 23% and 25%
ReliefCRA (₦200,000 plus 20%)No CRA. Rent relief of 20% of rent paid, capped at ₦500,000, with evidence
Tax authority at federal levelFIRSNigeria Revenue Service (NRS, formerly FIRS)
Who collects employee PAYEState IRSState IRS of the employee's state of residence (check your own state)
NHF for private staffTreated as compulsoryVoluntary, deduct only if the employee opts in
Annual return of emolumentsAnnual returns under the previous lawDue 31 January for the previous year (NTAA s.14)
Comparison of old payroll rules with CRA and 7 to 24 percent bands against the 2026 rules with a zero-rated first ₦800,000, rent relief and voluntary NHF.
The three changes most likely to break an old payroll template.

Checklist 1: the tax engine

Checklist 2: re-test three salaries

Do not trust a changed setting until the output matches a known-good figure. Pick one low, one middle and one high salary from your payroll, run them through your system, and compare with the figures below. We produced these with our own PAYE calculation module using the 2026 bands.

Test casePension 8%Monthly PAYENet pay
₦90,000 gross, all pensionable₦7,200₦2,420₦80,380
₦350,000 gross (basic ₦200,000, housing ₦80,000, transport ₦40,000)₦25,600₦40,892₦283,508
₦350,000 as above, with ₦1,200,000 annual rent paid and evidenced₦25,600₦37,292₦287,108
₦1,200,000 gross, all pensionable₦96,000₦184,340₦919,660

If a figure differs by even ₦100, find out why. The usual causes are the pension base (whole gross against basic, housing and transport only), rounding done per month instead of per year, or a leftover relief. The net to gross guide matters here if you quote salaries to candidates as take-home figures, because every one of those quotes changed.

Under-deducting is the expensive error. If a system still applies a relief that no longer exists, PAYE is understated every month until someone notices. The employer, not the employee, is the one who failed to deduct. Reported penalties include 40% on tax that should have been deducted but was not, plus the unremitted tax and interest. Confirm the current position with your state IRS.

Checklist 3: pension, NHF and levies

Checklist 4: registration, IDs and returns

Timeline of payroll dates: PAYE by the 10th of each month, pension within 7 working days of paying salaries, and the annual return on 31 January 2027.
The recurring dates to diarise for 2026 payroll.

Where old templates quietly break

An hour spent on these five points is cheaper than a state IRS letter. If your records already show a wrong method for earlier months, the penalty exposure depends on how the authority treats voluntary correction, which we cannot confirm here. Ask your state IRS before filing amended figures.

What to tell your staff

Send one short note before the next payslip, not after. Say that PAYE is now calculated on the 2026 bands, that CRA has gone, that rent relief is available if they send tenancy documents, and that NHF is now voluntary for them. Add a date for the rent-evidence deadline. A message like this prevents a rash of "why did my tax go up" queries, because for some staff it did go up and for many it went down.

Corrections for months already run under the old method are a separate job, described in back pay and payroll corrections. To see how the changes look for a typical payroll team, read common payroll mistakes of Nigerian SMEs, and keep your three test results with the policy note in case of a visit from the state IRS.