Table of Contents

ESSENTIAL TAX RECORDS EVERY BUSINESS SHOULD MAINTAIN

Introduction

In Nigeria, every taxpayer—whether or not liable to pay tax, and whether or not exempt from tax registration—is required to maintain complete books and records. This is not a recommendation. It is a mandatory legal obligation under Section 31 of the Nigeria Tax Administration Act 2025.

The records must be sufficient to determine tax liabilities, must be kept in English, and must be retained for at least six years. Failure to maintain adequate records attracts penalties of ₦10,000 for individuals and ₦50,000 for companies—and these penalties apply even before any tax assessment is raised.

The shift in Nigeria’s tax administration is significant. Under the Nigeria Tax Act 2025, the focus has moved from merely filing returns to demonstrating substance. A return without credible records is a tax position waiting to be challenged. When the Nigeria Revenue Service (NRS) requests documentation, you have 21 days to produce it for controlled transactions of ₦300 million or more.

At Qeeva Advisory, we understand that tax record keeping is not a bureaucratic burden—it is the foundation of tax compliance and audit defense. Our team helps Nigerian businesses identify, organise, and maintain the records that satisfy regulators and withstand scrutiny.

This comprehensive guide examines the essential tax records every business should maintain, covering the categories of records, the specific documents required for FIRS and state tax audits, the NTA 2025 requirements, and how Qeeva Advisory helps businesses build record-keeping systems.

The Pain Points: Why Tax Records Matter Now More Than Ever

The NTA 2025 Record-Keeping Mandate

Section 31 of the Nigeria Tax Administration Act 2025 requires every taxpayer to maintain books and records that:

Provide sufficient information to determine tax liabilities
Enable accurate tax returns to be prepared
Are kept in English (or, if in another language, accompanied by a certified translation at the taxpayer’s expense when requested)
Are retained for at least six years from the end of the tax year to which they relate

The obligation applies whether or not the business is liable to pay tax. There is no exemption for small businesses, loss-making companies, or entities that believe they owe nothing.

The Penalty Exposure

Under Section 102 of the NTAA 2025:

Default	Penalty
Failure to maintain adequate records	Individual/Non-corporate: ₦10,000; Company: ₦50,000
Failure to produce records when requested	Same penalties

These penalties apply before any tax assessment is raised. Even if you are substantively compliant, poor documentation creates immediate financial exposure.

The Audit Reality

When the NRS or a State Internal Revenue Service conducts a tax audit, they work from a document checklist. If you cannot produce the required documents, the auditor has two options: accept your verbal explanations, or assess based on best judgment. Best judgment assessments rarely favour the taxpayer.

The burden of proof rests with the taxpayer. If you cannot substantiate a deduction, it will be disallowed. If you cannot prove revenue, the auditor will estimate it. If you cannot reconcile VAT and WHT, the auditor will construct their own numbers.

The Digital Visibility Trap

The NRS TaxPro-Max system enables real-time monitoring and data cross-verification. Your tax filings are compared against bank records, supplier submissions, and industry benchmarks. Inconsistencies trigger scrutiny. In a digital tax environment, poor record quality has shifted from a minor inconvenience to a significant business risk.

Categories of Essential Tax Records

1. Foundational Business Records

The Federal Inland Revenue Service’s “Simple Record Keeping” guide identifies the following categories of essential records:

Fixed Assets Records – Records of permanent or long-term assets acquired for business use. For each asset, record:

Date of acquisition
Type and description of asset
Details of supplier or buyer
Quantity purchased or sold
Price paid or received
Value of asset bought, sold, or written off

Expenditure Records – Records of day-to-day running costs including stationery, maintenance, travel, utilities, and professional fees. For every expenditure:

Date of transaction
Type or class of expenditure
Quantity (where applicable)
Amount paid

Sales Records – Records of goods or services sold in the ordinary course of business. These are maintained in a Sales Book and should include:

Date of sale
Customer details
Description of goods or services
Quantity sold
Amount and VAT charged

Purchases Records – Records of goods acquired as trading stock for resale. These are maintained in a Purchases Book and should include:

Date of purchase
Supplier details
Description of goods
Quantity purchased
Amount and VAT paid

Bank Transaction Records – Bank statements and cash book records. These should include:

All bank accounts operated
All deposits and withdrawals
Bank charges and interest
Transfers between accounts

Tax Records – Evidence of tax payments including:

Tax receipts and e-receipts
Withholding tax credit notes
VAT remittance receipts
PAYE remittance schedules
Pension and NSITF remittance evidence

Personal Drawings Records – Records of cash or goods withdrawn from the business for private use. For every drawing:

Date of withdrawal
Value of cash or goods taken

2. Primary Information Documents

These are the documents issued to customers or received from suppliers as first evidence of transactions:

Invoices for goods and services sold or bought
Cash receipts for goods and services sold or bought
Receipts for taxes and other government dues paid
Vouchers for various business expenses
Receipts for payments for assets and utilities
Agreements relating to business contracts
Cheque books and bank statements
Bills and orders
Other business-related correspondence and documents

3. Corporate and Statutory Records

Certificate of Incorporation (CAC)
Memorandum and Articles of Association
Tax Identification Number (TIN) certificate
VAT registration certificate
Business premises registration/permits
Board and shareholders’ meeting minutes
Statutory registers (members, directors, charges)

4. Payroll and Employment Records

Staff list with names, roles, start dates, and exit dates
Employment contracts and HR policies
Monthly payroll schedules showing gross pay, allowances, deductions, PAYE, and pension
Payslips and signed payroll summaries
PAYE computation workings and annual returns
Proof of PAYE remittances for each month
Pension schedules and evidence of remittance to Pension Fund Administrators
NSITF contribution schedules and remittance evidence
NHF contribution schedules and remittance evidence
ITF contribution records (where applicable)

5. VAT Records

VAT output schedules (sales) tied to the trial balance
VAT input schedules (purchases) with supporting invoices
VAT returns filed and payment receipts
Evidence of VAT withheld at source (if applicable)
Credit notes and debit notes issued
Zero-rated and exempt supply documentation

6. Withholding Tax Records

WHT deducted from vendor payments and remittance evidence
WHT suffered from customers with credit notes
WHT schedules filed with remittances
Reconciliation of WHT credit notes to income tax computation
Vendor TIN records

7. Transfer Pricing Records (Where Applicable)

Master File (group-level documentation)
Local File (entity-level documentation)
Country-by-Country Report (if threshold met)
TP Declaration and Disclosure Forms
Intercompany agreements
Comparability analysis and benchmarking studies

8. Financial Statements and Reports

Audited financial statements
Management accounts
Trial balances (monthly and year-end)
General ledgers and subsidiary ledgers
Bank reconciliation statements
Inventory records and stock counts
Fixed asset registers

FIRS Tax Audit Document Checklist

When the Federal Inland Revenue Service conducts a tax audit, the following documents are typically required:

Corporate Income Tax Documentation

Audited accounts for the relevant years
Management accounts
Chart of accounts
Year-end final trial balances
General ledgers/ledger printouts
Back-up documents for entries in the general ledger
Audit adjustment journals
Relevant schedules supporting tax computations
Capital allowance computations and schedules
Fixed asset register with asset description, location, cost, dates, and depreciation

Revenue and Sales Documentation

Detailed revenue schedules (monthly/annual) tied to the trial balance
Customer invoices and receipts (numbered and dated)
Contracts, LPOs, and engagement letters with clients
Evidence of cash receipts and POS/transfer confirmations
VAT output schedules

Expense and Procurement Documentation

Detailed expense schedules by nature (rent, salaries, fuel, professional fees, etc.)
Supplier invoices and receipts
Payment vouchers and approvals
Contracts/agreements with vendors and consultants
Evidence of payment (bank transfers, cheques, etc.)
WHT deducted on vendor payments and proof of remittance

VAT and WHT Records

VAT output schedules (sales) and VAT input schedules (purchases)
VAT returns filed and payment receipts
WHT schedules: WHT deducted from vendors and remitted
WHT suffered from customers (with credit notes/receipts)
Reconciliation of WHT credit notes to income tax computation

Fixed Assets and Capital Allowances

Fixed asset register with asset description, location, cost, dates, and depreciation
Invoices and receipts for asset purchases
Evidence of disposal (board approvals, sale agreements, proceeds)
Capital allowance computations and schedules used in CIT returns

State Tax Audit Document Checklist

When a State Internal Revenue Service conducts a tax audit, additional documents specific to state taxes are required:

PAYE Documentation

Staff list for each year (name, role, start/end dates)
Employment contracts and HR policies
Monthly payroll schedules (gross pay, allowances, deductions, PAYE, pension)
Payslips and signed payroll summaries
PAYE computation workings and annual returns
Proof of PAYE remittances for each month

Pension and Statutory Contributions

Pension schedules and evidence of remittance
NSITF contribution schedules and remittance evidence
NHF contribution records
ITF contribution records
Compliance certificates

Business Premises and Other State Taxes

Business premises registration/renewal receipts
Development levy receipts
Signage fees receipts
Other state-specific levies and permits

Directors and Employee Benefits

Directors’ list, addresses, and payment details
Company vehicles and allocation details
Foreign employee contracts and expatriate quota letters
Benefits-in-kind records

How Long to Keep Records

The Six-Year Rule

Section 31 of the NTAA 2025 requires records to be retained for at least six years from the end of the tax year to which they relate.

Exceptions to the Six-Year Rule

The six-year limitation has important exceptions:

Fraud, Willful Default, or Neglect – Where fraud, willful default, or neglect is involved, the six-year limitation does not apply. The tax authority can pursue the taxpayer indefinitely.

Ongoing Audits – Where an audit was commenced within the six-year window, the tax authority can continue the audit even after the six years have expired.

Deliberate Misstatement – Where there is a “deliberate misstatement” on tax filings, the tax authority can come after the business at any time, and as often as necessary.

Practical Recommendation

While the legal minimum is six years, we recommend:

General records: Retain for 10 years
Fixed asset records: Retain indefinitely
Records related to ongoing disputes: Retain until resolution
Transfer pricing documentation: Retain indefinitely

Language Requirements

Section 31 of the NTAA 2025 requires records to be kept in English. If records are maintained in another language, the taxpayer must provide a certified translation into English when requested by the tax authority—at the taxpayer’s own expense.

Penalties for Non-Compliance

Default	Penalty
Failure to maintain adequate records	Individual/Non-corporate: ₦10,000; Company: ₦50,000
Failure to produce records when requested	Same penalties
Failure to file returns	₦100,000 first month; ₦50,000 subsequent months
Failure to provide information	₦200,000 first day; ₦10,000 daily thereafter
Complex business structures non-compliance	₦1,000,000 first day; daily penalties thereafter

These penalties apply before any tax assessment is raised. Even substantively compliant taxpayers face exposure if documentation is inadequate.

The NTA 2025: A Shift Toward Substance

The Nigeria Tax Act 2025 introduces a significant shift in tax administration philosophy. The focus has moved from merely filing returns to demonstrating substance. Key changes include:

Detailed Disclosure Requirements – Businesses must maintain records covering transaction intent, pricing structures, and legal tax positions.

Real-Time Digital Monitoring – The NRS can cross-verify filings against bank records, supplier data, and industry benchmarks.

Proactive Disclosure of Tax Planning Arrangements – Under Section 30(1), businesses must disclose tax planning arrangements that confer tax advantages, without waiting for the tax authority to ask.

Increased Audit Trails and Traceability Standards – Records must be sufficient to explain and defend every tax position taken.

Core Principle: The ability to explain and defend a tax position is now as important as paying the correct tax.

Building a Tax Record-Keeping System

Step 1: Identify Your Record Universe

Map every category of records your business generates:

Financial records (sales, purchases, expenses, assets)
Tax records (VAT, WHT, PAYE, CIT)
Payroll records (salaries, pension, NSITF)
Corporate records (CAC filings, board minutes)
Transfer pricing records (if applicable)

Step 2: Assign Ownership

Each record category should have a named owner responsible for maintaining and producing records when required.

Step 3: Establish Filing Systems

Whether physical or digital, establish clear filing conventions:

Chronological organisation by tax year
Consistent naming conventions
Secure storage with backup
Access controls for sensitive records

Step 4: Implement Retention Schedules

Document how long each record type will be retained and when it will be disposed of. Ensure retention periods meet or exceed legal minimums.

Step 5: Conduct Periodic Self-Audits

Before the tax authority arrives, conduct your own audit. Pull the documents a tax auditor would request. Identify gaps. Remediate before they become exposure.

Step 6: Train Your Team

Ensure all staff involved in financial transactions understand their record-keeping responsibilities. Training reduces errors and improves consistency.

Step 7: Engage Professional Support

Work with qualified accountants and tax advisors who understand Nigerian requirements and can help maintain compliant records.

How Qeeva Advisory Helps with Tax Record Keeping

At Qeeva Advisory, we understand that tax record keeping is the foundation of tax compliance and audit defense. Our team helps Nigerian businesses identify, organise, and maintain the records that satisfy regulators and withstand scrutiny.

Our Core Services

Tax Advisory Services – We help you navigate Nigeria’s tax system, ensuring your records support accurate tax computation and defensible positions.

Tax Audit Defense Service – We provide comprehensive support for businesses facing tax audits, including documentation compilation and response coordination.

Bookkeeping Services – Accurate bookkeeping ensures your records are complete, compliant, and ready for any purpose.

Tax Audit Defense Preparation Burndown – We help you systematically close documentation gaps before the audit notice arrives.

Internal Control Advisory Service – We help you design controls that ensure transactions are properly recorded, authorized, and documented.

Payroll Compliance Service – We help you maintain compliant payroll records for PAYE, pension, NSITF, ITF, and NHIA.

Advisory Services Nigeria – Our advisory professionals provide guidance on record-keeping systems, compliance, and regulatory engagement.

Training & Mentoring Services – We provide training on tax record keeping and compliance for your team.

Our Tax Record Keeping Methodology

Phase 1: Record-Keeping Diagnostic – We assess your current record-keeping practices against NTA 2025 requirements. We identify gaps, prioritise by risk, and establish your baseline.

Phase 2: Documentation Remediation – We help compile missing records, organise existing documentation, and establish filing systems.

Phase 3: System Design – We design record-keeping systems tailored to your business—whether manual, spreadsheet-based, or software-enabled.

Phase 4: Implementation Support – We support the implementation of your record-keeping system, including chart of accounts, source document workflows, and retention schedules.

Phase 5: Training and Handover – We train your team on record-keeping procedures and provide documentation for ongoing use.

Phase 6: Ongoing Support – We provide ongoing bookkeeping, reconciliation, and compliance support as your business grows.

Frequently Asked Questions

Q: How long must Nigerian businesses keep tax records?

A: Section 31 of the Nigeria Tax Administration Act 2025 requires records to be retained for at least six years from the end of the tax year to which they relate. However, where fraud, willful default, or neglect is involved, the six-year limitation does not apply. A practical recommendation is to retain records for 10 years, and indefinitely for fixed asset records.

Q: Do I need to keep records if I am not paying tax?

A: Yes. Section 31 of the NTAA 2025 requires every taxpayer—”whether or not liable to pay tax”—to maintain books and records. Record-keeping is a compliance obligation whether tax is payable or not.

Q: What records must I keep for tax purposes?

A: Essential records include: fixed assets records, expenditure records, sales records, purchases records, bank transaction records, tax payment records, personal drawings records, payroll records, VAT records, WHT records, and corporate records.

Q: What documents does FIRS request during a tax audit?

A: FIRS typically requests: audited accounts, trial balances, general ledgers, revenue schedules, expense schedules, payroll records, VAT and WHT schedules, fixed asset registers, and supporting documentation for all transactions.

Q: What documents does the State IRS request during a tax audit?

A: State IRS typically requests: staff lists, payroll schedules, PAYE computation workings, remittance evidence, pension and NSITF schedules, business premises registration receipts, and directors’ payment details.

Q: What is the penalty for not keeping proper records?

A: Under Section 102 of the NTAA 2025, failure to maintain adequate records attracts a penalty of ₦10,000 for individuals and ₦50,000 for companies. These penalties apply before any tax assessment is raised.

Q: In what language must records be kept?

A: Records must be kept in English. If maintained in another language, a certified translation must be provided when requested—at the taxpayer’s expense.

Q: How can Qeeva Advisory help with tax record keeping?

A: We provide record-keeping diagnostics, documentation remediation, system design, implementation support, training, and ongoing bookkeeping. Our services help you build the records that satisfy regulators and withstand scrutiny.

The Bottom Line

Tax record keeping is not a bureaucratic burden—it is the foundation of tax compliance and audit defense. In Nigeria’s hardening enforcement environment, businesses that maintain complete, accurate, and accessible records will avoid penalties, defend their tax positions, and demonstrate the compliance discipline that earns credibility with regulators.

Key Takeaways:

Keep Records for at Least Six Years – Section 31 of the NTAA 2025 requires it, whether or not tax is payable.

Maintain All Categories – Fixed assets, expenditures, sales, purchases, bank transactions, tax payments, payroll, VAT, WHT, and corporate records.

Meet the Audit Checklist – Know what FIRS and State IRS request. Have it ready before they ask.

Keep Records in English – If in another language, provide certified translations when requested.

Understand the Penalties – ₦10,000 for individuals, ₦50,000 for companies for inadequate records.

Conduct Self-Audits – Pull the documents an auditor would request. Identify gaps. Remediate before they become exposure.

Your job is to be prepared. Identify your records. Organise them. Maintain them. Produce them when requested. Seek professional guidance.

With the right approach and the right partner, you can turn tax record keeping from a compliance burden into a demonstration of operational discipline.

Reference Links / Sources

Qeeva Advisory – Tax Audit Defense Preparation Burndown – Audit readiness and documentation.

Qeeva Advisory – Tax Advisory Services – Tax compliance and planning.

Qeeva Advisory – Tax Audit Defense Service – Pre-audit preparation and documentation compilation.

Qeeva Advisory – Bookkeeping Services – Accurate financial record-keeping.

Qeeva Advisory – Internal Control Advisory Service – Controls for proper transaction recording.

Qeeva Advisory – Payroll Compliance Service – PAYE, pension, NSITF, ITF, and NHIA compliance.

Qeeva Advisory – Tax Compliance Calendar – Complete filing and remittance deadlines.

Qeeva Advisory – Financial Record Keeping for SMEs – Record keeping for Nigerian SMEs.

Let’s Talk About Your Tax Record Keeping Needs

Maintaining essential tax records is critical for compliance, audit defense, and business credibility. At Qeeva Advisory, we understand the record-keeping challenges faced by Nigerian businesses.

Whether you need help with record-keeping diagnostics, documentation remediation, system design, or ongoing bookkeeping, we are here to support you.

📞 Call us: (+234) 802 320 0801, (+234) 807 576 5799

📧 Email: info@qeeva.com

📍 Visit us: 5, Ishola Bello Close, Off Iyalla Street, Alausa, Ikeja, Lagos, Nigeria

Contact us today to schedule a tax record-keeping consultation. Let us help you build the records that satisfy regulators and withstand scrutiny.

Your journey to compliance excellence starts with a conversation. Let’s talk.

Shopping cart