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Even the most well-intentioned business owners fall into tax traps. In Nigeria, the 2026 tax landscape is less forgiving than ever. A simple ‘administrative oversight’ can now cost you hundreds of thousands in automated fines. By recognizing these common errors early, you can protect your cash flow and reputation.
1. The ‘No Sales, No Filing’ Myth
This is the most expensive mistake for SMEs. Many founders believe that if they didn’t make any money in a particular month, they don’t need to do anything. False. If you are registered for VAT, you MUST file a ‘Nil Return’. Failure to file a return—even a zero-revenue one—attracts an immediate ₦100,000 penalty. You can see a list of these dates in our VAT Returns Deadline in Nigeria guide.
2. Misunderstanding the 72-Hour E-Invoicing Rule
In 2026, the NRS introduced the ‘Merchant-Buyer Solution’ (MBS). When you issue an electronic invoice, the buyer has exactly 72 hours to accept or reject it on the portal. If they do nothing, it becomes a final tax liability for you. Forgetting to follow up on these validations can lead to paying tax on invoices that were never actually paid by the client. For more on the tech side, see How to Remit VAT Online in Nigeria.
3. Claiming Ineligible Input VAT
You cannot claim back the VAT you paid on everything. You can only claim Input VAT on goods purchased for resale or raw materials for production. You cannot claim VAT on:
- General overheads like office rent or electricity.
- Capital assets like cars or furniture (unless specifically allowed under your sector).
- Services like professional consulting fees.
To get this right, you must master How to Calculate VAT in Nigeria. Practical example: Claiming ₦500,000 in ineligible input tax will lead to a 50% penalty on the ‘false claim’ during an audit. For expert advice, check the NRS Helpdesk or read Proshare Nigeria for the latest fiscal policy alerts.
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