Bookkeeping vs Accounting: What a Nigerian Small Business Actually Needs (2026)

Ask ten Nigerian business owners whether they “do accounts” and most will say yes — and mean a notebook, a WhatsApp chat of transfer alerts, or a spreadsheet updated whenever there is time. That is bookkeeping, done partly. Accounting is the next step, and since the Nigeria Tax Administration Act 2025 took effect on 1 January 2026, both come with clearer rules and fixed penalties.

Last checked 15 October 2026. Record-keeping, filing deadlines and penalties from sections 11, 13, 31, 101 and 102 of the Nigeria Tax Administration Act 2025; small company definition from the Nigeria Tax Act 2025.

The difference in one table

The key point: accounting is only as good as the bookkeeping beneath it. An accountant handed a year of scattered alerts in March will spend your money reconstructing the year before they can do the job you hired them for.

What Nigerian law requires you to keep

Section 31 of the Nigeria Tax Administration Act 2025 says every person must keep books or records of accounts, whether or not they are liable to pay tax, in English, for at least six years after the year of assessment they relate to. In practice that means:

• Every invoice you issue and every receipt for money received.
• Every expense receipt, supplier invoice and payment voucher.
• Bank statements for every business account, including domiciliary accounts.
• Payroll records: who was paid, how much, and PAYE deducted.
• Withholding tax credit notes received and WHT deducted from suppliers.
• Stock records if you sell goods, and records of assets bought and sold.
• Contracts and agreements that explain unusual transactions.

Electronic records count — the Act’s definition of books covers computers, servers and electronic media — so a well-kept system in the cloud satisfies the law better than a cupboard of paper.

Penalties you can now calculate

A business that files nine months late pays ₦500,000 in late-filing penalties alone, before any tax or interest. That is more than a year of bookkeeping software and an accountant’s fee combined.

The deadlines

• Company income tax return: within six months of the end of the accounting year for a company trading more than 18 months. A new company files within 18 months of incorporation or six months after its first accounting period ends, whichever is earlier.
• Personal income tax: an annual self-assessment return even if no tax is due. Most state revenue services, including Lagos, use 31 March.
• Employers: the annual PAYE return for all employees by 31 January.
• VAT-registered businesses: monthly VAT returns by the 21st of the following month.
• Withholding tax deducted: remit by the 21st of the following month.

All of these are on one page in the 2026 compliance calendar.

Small companies: less tax, not fewer records

The Nigeria Tax Act 2025 defines a small company as one with gross turnover of ₦100 million or less and fixed assets of no more than ₦250 million, and taxes its profit at 0%. Under CAMA 2020 a small private company meeting the turnover, net-asset and ownership tests is also exempt from the statutory audit. Neither exemption removes the duty to keep books. If anything it raises the stakes: the way you prove you qualify for 0% is with records that show your turnover.

What you can do yourself, and what to hand over

You need a chartered accountant (ICAN or ANAN) when the law or a third party requires a signed or audited set of accounts — a company above the audit-exemption limits, a bank loan, a large tender. For everything else, a disciplined owner with good software does the bookkeeping and pays an accountant only for the annual work.

A bookkeeping routine that survives a busy month

1. Never take payment without an invoice or a receipt number attached to it.
2. Photograph expense receipts the day you get them.
3. Put one category on every expense — rent, transport, data, stock — and keep the list short. See expense categories.
4. Reconcile the bank account weekly; it takes ten minutes when done weekly and two days when done yearly.
5. Close each month: check unpaid invoices, unclaimed WHT credits, and anything uncategorised.

How ereQa fits

ereQa covers the bookkeeping half: invoices with your Tax ID and VAT, expenses with categories, payment status on every invoice, and bank statement analysis on paid plans. Your accountant gets read-only access, or exports in ledger CSV, a Nigerian Excel workbook, or QuickBooks, Xero and Sage formats, so the annual work starts from clean books. Start free.

This is general information, not legal or tax advice. Fees, forms and bank rules change; confirm with the agency, your bank or a licensed adviser before you rely on a figure.