5 Signs You Are Getting Your Business Taxes Wrong in Nigeria
Most Nigerian business owners who have tax problems did not set out to break the law. They just did not know they were breaking it. Under the Nigeria Tax Act 2025, the rules changed significantly from January 1, 2026, and several things that were never an issue before are now active compliance risks. This article breaks down five signs that your business taxes are going wrong, what the consequences look like, and what to do about each one before the NRS comes looking.
Quick Summary
- Sign 1 — You think tax exemption means you do not need to file. It does not. You still must file a nil return
- Sign 2 — You are classifying employees as contractors to avoid PAYE. The NRS has tools to detect this and the penalty is 40% of all unpaid PAYE
- Sign 3 — You are mixing personal and business expenses in the same account. This is one of the most common audit triggers for small businesses
- Sign 4 — You are not deducting or remitting Withholding Tax correctly. The penalty for failure to deduct is 40% of the amount not withheld
- Sign 5 — You are giving vendors without a TIN contracts. From 2026, this carries a ₦5,000,000 penalty per vendor
Nobody starts a business in Nigeria planning to get their taxes wrong.
What actually happens is this. You are focused on making sales, paying staff, managing suppliers, and keeping the business alive. Tax compliance sits somewhere at the back of your mind as something you will sort out when things slow down. Then things never slow down. And by the time the Nigeria Revenue Service sends you a letter, the problem is not just one year. It is several years of compounded errors, penalties, and interest that have been quietly building while you were busy running your business.
The Nigeria Tax Act 2025 made this problem more urgent. From January 1, 2026, penalties are steeper, enforcement tools are sharper, and the NRS now cross-references payroll records, bank account data, and tax filings in ways that were not possible before. What used to fall through the cracks is now being caught.
Here are five signs that your business taxes are going wrong right now, and what to do about each one.
Sign 1: You Think Tax Exemption Means You Do Not Need to File
This is the most common misconception among small business owners and it causes real damage.
If your business has annual turnover of ₦100 million or less, you qualify as a small company under the Nigeria Tax Act 2025 and you pay zero Companies Income Tax on your profits. That is genuinely good news and a significant benefit of the new law. The problem is that many small business owners interpret "zero tax" to mean "no obligation to the tax authority at all."
That interpretation is wrong and it is expensive.
Under Section 101 of the Nigeria Tax Administration Act 2025, every registered company must file its annual tax return within six months of its accounting year end, regardless of whether any tax is owed. For companies with a December financial year end, that means filing by June 30th of the following year. A company that qualifies for the 0% CIT rate and makes no profit still has a legal obligation to file a return showing those facts.
Filing a nil return is how you prove to the NRS that your tax liability is zero. Without that filing, the NRS has no record of your compliance and may raise an assessment against you based on estimates. The penalty for not filing is ₦100,000 for the first month plus ₦50,000 for every additional month the return remains outstanding.
A company that qualified for the small business exemption and simply did not file for a year because they owed no tax would owe ₦700,000 in filing penalties by the end of that year alone, before any actual tax assessment.
What to do: Set a calendar reminder for five months after your financial year end. That gives you one month to prepare and file before the six month deadline. If your year ends in December, your target filing date is May 31st, with June 30th as your absolute deadline.
Sign 2: You Are Calling Employees "Contractors" to Avoid PAYE
This one has been a known issue in Nigerian business for years but the NTA 2025 enforcement environment makes it significantly riskier than it was before.
The arrangement works like this. Instead of hiring staff formally and running them through payroll, which would require PAYE deductions, pension contributions, and all the associated compliance, a business pays people as "contractors" or "consultants" on invoices. On paper, they look like independent service providers. In practice, they show up every day, work exclusively for the business, take instructions from management, and function in every meaningful way as employees.
The NRS has seen this arrangement thousands of times. Under the Nigeria Tax Administration Act 2025, tax authorities can look past the label on a contract and assess the substance of a working relationship. If the substance is employment, the tax obligations are those of employment, regardless of what the contract says.
If the NRS reclassifies your contractors as employees, the penalty for failure to deduct PAYE on their earnings is 40% of all the PAYE that should have been deducted since the relationship began. This is calculated on the total amount that should have been withheld across every payment made to every reclassified worker, plus interest at the CBN Monetary Policy Rate.
For a business that has been paying ten "contractors" ₦200,000 a month each for two years, the exposure on PAYE alone runs into millions before penalties are added.
What to do: Review every person your business pays regularly for services. Ask honestly whether the relationship looks more like employment than contracting. If someone works exclusively for you, takes direction from you, uses your equipment, and has no other clients, they are almost certainly an employee in the eyes of the law. Formalise those relationships properly. The PAYE cost of doing this correctly is significantly less than the penalty cost of getting caught doing it wrong.
You can read more about PAYE obligations for employers in our guide on PAYE for employers in Nigeria: your complete obligations under the NTA 2025.
If you are not sure whether your business is handling PAYE, filing obligations, or contractor relationships correctly, Taxidy is building the platform that helps Nigerian businesses stay on the right side of every compliance requirement. Join the waitlist.
Sign 3: Your Business and Personal Finances Are in the Same Account
This one feels like a bookkeeping issue. In practice it is a tax compliance issue that can make an audit significantly worse than it needs to be.
When a business owner uses their corporate bank account for personal expenses, or uses their personal account to receive business income, two things happen. First, the picture of what the business actually earned and spent becomes unclear. Second, personal receipts that are not business income start looking like business revenue to anyone reviewing the account, including the NRS.
Under the Nigeria Tax Administration Act 2025, Section 102 requires businesses to maintain adequate books and records. Failure to do so, or failure to produce records when requested, attracts a penalty of ₦50,000 for companies. More importantly, during an audit, if you cannot clearly separate business income from personal receipts in your account, the tax authority is entitled to treat everything that came into the account as potential business income and assess tax on that basis.
For a business owner who ran ₦500,000 a month through their personal account in business receipts alongside family transfers and personal income from other sources, an auditor applying the worst case interpretation of that account could assess tax on the entire inflow.
There is also a VAT dimension. If your business is VAT-registered and your account shows income that you cannot account for against invoices, you may face a VAT assessment on the unreconciled amount.
What to do: Open a dedicated business account if you do not have one. From today, all business income goes into the business account and all personal expenses come from your personal account. For money you draw from the business for personal use, document it properly as a salary, director's fee, or dividend. This separation is the single most protective thing a small business owner can do for their tax compliance.
Sign 4: You Are Not Handling Withholding Tax Correctly
Withholding Tax is one of the most misunderstood obligations in Nigerian business and the one that catches the most companies off guard during audits.
Here is how it works. When a company makes certain payments such as rent to a landlord, professional fees to a consultant, dividends to shareholders, or contract payments to a service provider, the law requires the paying company to deduct a percentage of that payment before handing it over, and remit that deduction to the NRS.
The rates vary. Rent attracts 10% WHT. Professional fees attract 10%. Dividends attract 10%. Contract payments between companies attract 5%. The full list is in the NTA 2025.
The two errors that come up most often are failing to deduct WHT at all when a payment requires it, and deducting the correct amount but not obtaining a WHT credit certificate to give to the recipient.
The penalty for failing to deduct WHT when you were required to is 40% of the amount that should have been deducted. For a company that paid ₦2,000,000 in rent every month for a year without deducting the 10% WHT, the liability is ₦2,400,000 in unpaid WHT plus a 40% penalty of ₦960,000 plus interest.
On the other side, if your business receives payments and the client deducts WHT from what they pay you, you are entitled to use that WHT as a credit against your own tax liability when you file. But you can only claim that credit if you have the WHT credit certificate from the client. Without the certificate, the credit is lost entirely.
What to do: Go through every payment your business makes regularly and check whether WHT applies. Set up a system that deducts the correct percentage before payment and issues the credit certificate to the recipient. If you have been making payments without deducting WHT, speak to a tax consultant about regularising your position before it surfaces in an audit.
Sign 5: You Are Giving Contracts to Vendors Without a TIN
This one came in with the new enforcement regime and caught many business owners by surprise.
From 2026, any company that awards a contract to a vendor who does not have a valid Tax Identification Number faces a penalty of ₦5,000,000 per vendor. This is not the vendor's penalty. It is yours.
The logic behind this provision is that the NRS wants every participant in the Nigerian economy to be registered in the tax system. By making the contracting company responsible for verifying vendor TINs, the law effectively turns every business into an enforcement agent for tax registration.
The practical implication is that you need a TIN verification step in your procurement process. Before your business pays any vendor, supplier, or service provider, confirm that they have a valid TIN. A vendor's TIN can be verified through the tax ID portal at taxid.nrs.gov.ng. If a vendor cannot provide a TIN, either require them to register before you engage them or do not engage them at all.
What to do: Add a TIN verification requirement to your vendor onboarding process. Create a simple checklist that every new vendor must complete before receiving a purchase order or contract. For existing vendors, send out a request for their TIN details and update your records. The ₦5,000,000 per-vendor penalty makes this a straightforward cost-benefit calculation.
The Pattern Behind All Five Signs
Looking at these five signs together, the pattern that emerges is the same in every case.
Each one is a situation where a business owner made an assumption that turned out to be wrong under the new law, or kept doing something the old way without checking whether it still applied, or deprioritised a compliance step because it did not feel urgent.
The NTA 2025 enforcement environment is different from what most Nigerian business owners grew up operating in. The NRS now has digital tools that cross-reference your declared income against your bank account data. It cross-references your payroll records against your employees' individual tax filings. It can match your vendor payments against their tax registration status. The information asymmetry that made it easy to slip through the cracks is significantly narrower than it was three years ago.
None of the five things in this article require a major overhaul of your business. They each require a specific process adjustment that, once in place, removes the risk entirely.
The time to make those adjustments is before you receive a letter. Not after.
Taxidy is building the platform that helps Nigerian businesses stay compliant with every tax obligation, from PAYE and WHT to vendor TIN verification and annual returns. One platform, every requirement. Join the waitlist to be first when we launch.
Taxidy is built by Nigerians who understand exactly how confusing this system is.
Sources: Nigeria Tax Act 2025, Sections 56, 78 to 81. Nigeria Tax Administration Act 2025, Sections 101, 102, 105, 107, 127. BusinessDay Nigeria, Eight Common Tax Filing Errors and Their Penalties, March 2026. Legit.ng, Common Tax Filing Errors in Nigeria and Their Penalties Explained, March 2026. Remote Solutions Africa, Nigeria 2026 Tax Reform, December 2025. SOW Professional, Small Businesses 2026 Tax Compliance Guide, January 2026. Remote Solutions Africa, Payroll Deadlines in Nigeria, December 2025.
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