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10 Costly Tax Mistakes Nigerian Taxpayers Make (And How to Avoid Them)

Comprehensive guide to common tax mistakes nigerian taxpayers make for Nigerian taxpayers

TaxEase Nigeria
14/02/2026
10 min min read
tax mistakesFIRS penaltiestax compliancetax filingNigerian taxpayerssmall business taxpersonal income taxtax reliefCRAtax deadlinesSTARTER

Introduction

Chioma almost lost ₦296,000 last year. Not to a business deal gone wrong or a bad investment—but to a simple tax mistake she didn't even know she was making.

As a young banking professional earning ₦4.8 million annually, she diligently paid her taxes through PAYE every month. What she didn't realize was that her employer wasn't applying all the tax reliefs she was entitled to. By the time she discovered she could claim Consolidated Relief Allowance, pension deductions, and National Housing Fund contributions properly, she had already overpaid nearly ₦300,000 in taxes.

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10 Costly Tax Mistakes Nigerian Taxpayers Make (And How to Avoid Them) | TaxEase Nigeria