When the NRS Can Deduct Taxes Directly from Your Bank Account: The Power of Substitution Explained

You open your banking app on a Tuesday morning and see a debit you didn't authorise. The narration reads "tax payment." You call your relationship manager, and the answer is calm and unsettling at the same time: "This was instructed by the tax authority. We had no choice."

That scenario isn't theoretical. Under Nigerian law, the Nigeria Revenue Service (NRS) — formerly known as FIRS — has the power to appoint your bank, or any other person holding your money, as its agent to collect unpaid taxes. The legal term for it is the power of substitution, and the simple answer to whether the government can use it is: yes, they can.

But that simple answer hides the more important truth. The NRS cannot just walk into your bank and instruct a debit. There is a defined, multi-step process that must run its course first — and at every stage, the law gives you the chance to push back, correct the record, or take the matter to court. Most bank-deduction nightmares are caused not by aggressive enforcement, but by taxpayers ignoring the warning signs.

Here's how the process actually works, and where you have leverage at every stage.

The Power Has Been on the Books Since 2007

The power of substitution isn't new. Section 31 of the Federal Inland Revenue Service (Establishment) Act 2007 — the legacy statute that governed FIRS — created this mechanism nearly two decades ago. The provision survived the 2025 tax reform and now sits within the Nigeria Tax Administration Act (NTAA) 2025 and the Nigeria Revenue Service (Establishment) Act 2025 (NRSA) framework.

So why have most Nigerians never heard of a tax-related bank deduction? Largely because the NRS rarely used the power. That's changing. As tax enforcement modernises and arrears across both federal and state systems come into sharper focus, expect the authorities to lean on this tool more actively — particularly against taxpayers with material outstanding liabilities.

The point isn't to be alarmed. The point is to understand the process so that, if a notice ever lands on your desk, you know exactly what to do — and what timelines you're racing against.

Step 1: Self-Assessment and the Six-Year Audit Window

Nigeria operates a self-assessment tax system. Whether you're an individual or a business, the primary duty is yours: report your income, compute your tax, and pay it. The NRS is not the one preparing your return for you.

But filing a return doesn't end the matter. The NRS retains a six-year window during which it can audit your filings and reassess your tax position. Within those six years, it can examine the income you declared, test it against external data, and decide whether you paid the right amount.

Two scenarios trigger the next step. The NRS may audit you and conclude that you owe more than you paid. Or it may have no return from you at all, and decide — based on its own assessment — that you should have been paying tax. Either way, the next document you're going to receive is a Notice of Assessment.

Step 2: The Notice of Assessment

A Notice of Assessment is the NRS's formal statement of how much tax it believes you owe. It is not a final judgment. It is the opening move in a dialogue that the law expects you to engage with.

This is the moment most taxpayers handle badly. The notice arrives, gets filed in a folder marked "deal with later," and is then forgotten. That is precisely the mistake that turns a contestable assessment into an enforceable debt.

When you receive a Notice of Assessment, the clock immediately starts running. You have 30 days to respond.

Step 3: Your 30-Day Window to Object

If you disagree with the assessment — whether wholly or in part — your response is a formal Letter of Objection. The objection should clearly state that you do not agree with the assessment, set out your own position, and substantiate it with supporting evidence: documentation, working calculations, contracts, receipts, or any records that demonstrate the NRS has the figures wrong.

Two things matter here. First, the objection must be filed within 30 days. Miss that window and your options narrow dramatically (more on that below). Second, the quality of the objection matters. A letter that simply says "I disagree" is weak. A letter that says "I disagree because here are the income figures, here is the calculation, here are the supporting invoices, and here is why your assessment overstated my liability by ₦X million" is materially stronger.

This is where engaging a tax adviser early pays for itself many times over.

Step 4: The NRS's 90-Day Response

Once your objection is filed in time, the NRS has 90 days to respond. There are two possible outcomes.

The NRS may agree with you, in whole or in part. Where it agrees, it issues a revised assessment — either confirming that you owe nothing, or reducing the tax to a lower figure that reflects your evidence.

Or the NRS may stand by its original position. Where it does, it issues a Notice of Refusal to Amend Assessment — known in practice as a NORA. The NORA is the NRS's formal way of saying: we received your objection, we considered it, and we are not changing our number.

A NORA almost always arrives alongside a demand notice instructing you to pay the assessed tax.

Step 5: 30 Days to Take It to the Tax Appeal Tribunal

The NORA is not the end of the road. From the date you receive a NORA or a demand notice — whichever comes first — you have 30 days to file an appeal at the Tax Appeal Tribunal (TAT).

This is the crucial protection most taxpayers don't realise they have: as long as your matter is genuinely before the courts and moving up through the appellate chain, you do not have to pay the disputed tax. The NRS cannot pivot to enforcement — including the power of substitution — while litigation is live.

That protection runs all the way up to the Supreme Court. If, after every level of appeal, the apex court ultimately rules that you owe the tax, that is the point at which the NRS can move to recover the debt. Until then, you have your day in court, and you have it without a debit landing in your bank account.

A Note on the "20% Deposit" Debate

You may have heard that taxpayers must deposit 20% of an assessed tax — sometimes more — before an appeal can be heard at the TAT. This requirement has appeared in legislation before and resurfaced in policy discussions. The short answer is that you do not need to make such a deposit to appeal.

Nigerian courts have repeatedly held — in at least four reported decisions — that conditioning access to the Tax Appeal Tribunal on a percentage deposit of the assessed tax is unconstitutional and therefore unenforceable. The right of access to a tribunal cannot lawfully be made contingent on paying a portion of the very amount you are disputing.

A more thorough treatment of this issue deserves its own article, and we'll publish one. For now, the takeaway is straightforward: do not let a "deposit requirement" deter you from filing your appeal in time.

How a Notice Becomes a Debt — The "Final and Conclusive" Trap

Now we come to the part that determines whether the NRS can ever reach your bank account.

If the NRS issues you a Notice of Assessment and you fail to respond within 30 days, the law treats that assessment as final and conclusive by operation of law. Once final and conclusive, the assessed tax is no longer just a contested number — it is a debt owed by you to the government.

That status change is what unlocks the power of substitution. Because once a tax becomes a final, conclusive debt, the NRS can appoint your bank, or any other person holding your money, as its agent to settle the liability on your behalf. At that point, the legal protections built into the assessment process have been exhausted — not because the NRS overrode them, but because the taxpayer let them lapse by silence.

This is why the bank-deduction story is, more than anything else, a story about timeliness. The taxpayers most exposed are not the ones who fight an assessment and lose. They're the ones who never engage at all.

What You Need to Do Now

• Open every envelope from the NRS or your state tax authority immediately. A Notice of Assessment, a NORA, or a demand notice has a deadline embedded in it. The 30-day clock starts the day it lands in your hands.

• Track your deadlines like contractual obligations. 30 days to object after assessment. 30 days to appeal after a NORA or demand notice. These are not soft timelines — they determine whether the assessment becomes enforceable.

• Object on the merits, with evidence. A bare denial doesn't carry weight. Bring documentation, calculations, and a clearly articulated position to your Letter of Objection.

• Engage a tax adviser at the assessment stage, not after enforcement begins. The cost of a properly drafted objection is a fraction of the cost of recovering a debited account or unwinding an enforcement action.

• Don't let the "deposit requirement" myth stop your appeal. The TAT remains accessible without paying a percentage of the disputed tax up front. File on time and let the merits be tested.

• Keep clean tax records year-round. The strongest objection is the one supported by contemporaneous documentation — invoices, contracts, bank statements, ledgers. Build the habit before you need it.

Key Takeaways

• The NRS can deduct taxes directly from your bank account through the power of substitution, a provision that originated in Section 31 of the FIRS Establishment Act 2007 and continues under the NTAA 2025 / NRSA 2025 framework.

• The power is only triggered when an assessed tax has become final and conclusive — and that only happens when a taxpayer ignores the process.

• The full process — Notice of Assessment, 30-day objection, 90-day NRS response, NORA, 30-day appeal to the TAT, and onward through the courts — is designed to give you genuine opportunities to contest the liability.

• While your dispute is live in the TAT or higher courts, the NRS cannot enforce against you. Your protection is the act of engaging with the process.

• Silence is what converts a contestable assessment into an enforceable debt. The single most important thing a Nigerian taxpayer can do is respond to NRS correspondence within the statutory windows.

Tax compliance is fundamentally a record-keeping and timeliness discipline. TaxStreem helps Nigerian businesses stay ahead of both — automating tax filings, tracking obligations, and keeping the documentation trail that strengthens any future objection. Visit taxstreem.com to learn how. This article is general guidance; engage a qualified tax adviser for advice on your specific situation.

[Editor's Note: Nigeria's tax framework was overhauled effective 1 January 2026. The Nigeria Tax Act (NTA) 2025 replaced CITA, PITA, VATA, and other legacy statutes, while the Nigeria Tax Administration Act (NTAA) 2025 and the Nigeria Revenue Service (Establishment) Act 2025 (NRSA) replaced the FIRS Establishment Act 2007. FIRS is now the Nigeria Revenue Service (NRS). The procedural framework described in this article — assessment, objection, NORA, and appeal to the Tax Appeal Tribunal — has been carried forward under the NTAA. Verify current provisions and any subsequent guidance issued by the NRS as of the date of any action.]