VAT in Nigeria: Common Mistakes and How to Avoid Them

Most VAT problems in Nigeria do not start with fraud. They start with habits.

A business registers, starts charging 7.5% on invoices, and settles into a routine. The accountant files something around the 21st of each month, the bank account looks healthy, and nobody thinks about VAT again until a letter arrives from the tax authority, or a big client refuses to pay an invoice because the VAT on it is wrong.

That routine has become riskier. On 1 January 2026, the Nigeria Tax Act 2025 and the Nigeria Tax Administration Act 2025 took effect. The rate is still 7.5%, so many business owners assume nothing important changed. In fact, a lot did: who must charge VAT, what you can claim back, how invoices must be issued and what it costs to get it wrong. The Federal Inland Revenue Service has also been replaced by the Nigeria Revenue Service (NRS).

Below are the mistakes that come up again and again, and what to do about each one.

Running your VAT on the old rules

The most expensive mistake right now is simply not knowing the law has moved. Plenty of finance teams are still working from the Value Added Tax Act and the old FIRS guidance, because that is what they learned and what their templates are built on.

Here is what changed for most businesses:

Area	Before 2026	From 1 January 2026
VAT rate	7.5%	7.5% (unchanged)
Who is exempt	Businesses with turnover of ₦25 million or less	Small businesses: turnover of ₦100 million or less and fixed assets of ₦250 million or less (professional services excluded)
Input VAT on services and fixed assets	Generally not claimable	Claimable, if used to make taxable supplies
Basic food, medical and educational items	Mostly exempt	Mostly zero-rated, so suppliers can recover input VAT
Invoicing	Paper or ordinary electronic invoices	Moving to mandatory e-invoicing through the NRS fiscalisation system
Tax authority	FIRS	Nigeria Revenue Service (NRS)

How to avoid it: sit down with whoever handles your VAT and walk through this table line by line. If your invoice template, accounting software or month-end checklist was set up before 2026, assume it needs updating until you have checked.

Assuming you are “too small” for VAT

The new small business relief is generous. If your annual turnover is ₦100 million or less and your fixed assets are not more than ₦250 million, you generally do not need to register for, charge or file VAT.

But there are two traps here.

First, professional service providers are excluded. If you run a consultancy, law firm, accounting practice, architecture firm or similar professional business, the small business relief does not cover you, no matter how small your turnover is. You still have VAT obligations.

Second, the test is not a one-time decision. Turnover grows. A business that qualified as small in January can cross ₦100 million by October. The moment you exceed the threshold, VAT compliance becomes mandatory. Many businesses only notice months later and then have to account for VAT they never charged their customers.

How to avoid it: check your rolling twelve-month turnover every quarter, not once a year. If you are getting close to ₦100 million, start preparing your invoicing and records before you cross the line, not after.

Treating VAT collected as your own money

This one sounds obvious, yet it causes more real damage than almost anything else on this list.

When you charge a customer ₦1,075,000 for a ₦1,000,000 job, the extra ₦75,000 is not revenue. You are holding it on behalf of the government. But it sits in the same account as everything else, and when cash is tight, it gets used to pay salaries, suppliers or rent. Then the 21st arrives and the money is not there.

Late payment of VAT now attracts a 10% penalty plus interest at the Central Bank’s Monetary Policy Rate. With interest rates where they are in Nigeria, that adds up fast.

How to avoid it: open a separate account for VAT and move the VAT portion of every receipt into it as soon as the money arrives. It is a simple habit, and it removes the temptation entirely.

Missing the deadline, or skipping nil returns

VAT returns are due by the 21st day of the month after the month of the transactions. So January’s VAT is due by 21 February, February’s by 21 March, and so on.

Two things catch people out. The first is filing late because the books were not ready. The second is not filing at all in a quiet month. If you are registered for VAT, you must file a return every month, even when you made no sales. A nil return is still a return.

Late or inaccurate VAT returns now attract ₦100,000 for the first month and ₦50,000 for each month after that. Miss a few quiet months in a row and the penalties can easily exceed the VAT you would have paid.

How to avoid it: put the 21st in your calendar as a fixed monthly deadline, and aim to file by the 15th. That gives you a week of breathing room if something goes wrong with the portal or your records.

Not claiming input VAT you are now entitled to

This is the good-news change of the new law, and many businesses are not taking advantage of it.

Under the old regime, you could generally only recover VAT paid on goods you used to make your products. VAT on services, such as consultants, repairs and software, and on fixed assets like vehicles, generators and equipment was usually a cost you simply absorbed.

From 1 January 2026, input VAT on services and fixed assets can be claimed, as long as they are used to make taxable supplies.

A simple example

You charge customers ₦75,000 in VAT this month. You also paid ₦20,000 VAT on a generator repair and ₦10,000 VAT on accounting software, both used in your business.

Under the old rules, you would likely remit the full ₦75,000. Under the new rules, you can offset the ₦30,000 and remit ₦45,000.

How to avoid it: review your monthly expenses and pull out every supplier invoice that shows VAT. Claims must be made within five years, but only for input VAT incurred from 1 January 2026. VAT paid under the old regime cannot be claimed back.

Claiming input VAT without the right invoice, or claiming too much

The flip side of mistake 5 is getting carried away. Input VAT is only claimable when two conditions are met:

• You have a valid VAT invoice from a supplier who is registered for VAT. A receipt that says “VAT inclusive” with no breakdown, or an invoice from an unregistered vendor, will not stand up in an audit.
• The purchase relates to taxable supplies. If part of your business makes VAT-exempt supplies, you cannot claim the full input VAT on shared costs like rent, power or admin. You have to apportion it, claiming only the share that relates to your taxable activity.

How to avoid it: before paying any significant supplier, ask for their Tax Identification Number and a proper VAT invoice. If your business makes both taxable and exempt supplies, agree a sensible apportionment method with your adviser and apply it consistently every month.

Confusing zero-rated with exempt

These two words sound similar, and on the invoice they both mean the customer pays no VAT. But for your business, the difference matters.

• Zero-rated supplies are taxable at 0%. You charge no VAT, but you can recover the input VAT you paid on your costs.
• Exempt supplies are outside VAT altogether. You charge no VAT, and you cannot recover input VAT on related costs.

Under the new law, several essential items, including basic food, medical and pharmaceutical products, and educational materials and tuition, moved from exempt to zero-rated. A food processor or private school still treating its sales as exempt could be leaving recoverable VAT on the table every single month.

How to avoid it: check where your products and services now fall in the schedules to the Nigeria Tax Act 2025. Do not rely on what was true in 2024.

Ignoring e-invoicing until it is your turn

The NRS is rolling out an electronic fiscalisation system, which works through e-invoicing, so that taxable supplies are recorded and reported in real time. It is being introduced in phases, starting with large taxpayers, then medium and emerging businesses.

The penalties for non-compliance are significant, including ₦200,000 for failing to process taxable supplies through the system, plus the tax due and interest. Waiting until the deadline to start is a mistake, because connecting your accounting or invoicing software to the system takes time, testing and, often, help from your software provider.

How to avoid it: find out which phase your business falls into and when it applies to you. Then speak to your accounting software provider now about whether, and when, they will connect to the NRS system.

Filing returns that do not match your books

A VAT return is not a standalone form. It should agree with your sales records, your bank statements and your financial statements. When the tax authority reviews a business, mismatches between these are often the first thing it looks for.

The usual causes are invoices issued but not recorded, credit notes that were never reflected in the return, and VAT figures copied from a spreadsheet nobody has reconciled in months.

How to avoid it: before you file, reconcile three numbers: total sales in your accounting records, output VAT on your return, and VAT actually collected. If they do not line up, find out why before you submit.

A simple monthly VAT routine

You do not need a large finance team to get VAT right. You need a routine you follow every month without fail:

1. By the 5th: make sure every sales invoice for last month is recorded, with VAT shown separately.
2. By the 10th: collect and check supplier invoices for input VAT. Set aside anything without a valid VAT invoice.
3. By the 12th: reconcile sales, output VAT and the VAT set aside in your separate VAT account.
4. By the 15th: prepare and review the return, including a nil return if there were no sales.
5. By the 21st at the latest: file and pay.
6. Every quarter: check your rolling turnover against the ₦100 million small business threshold, and review any changes in NRS guidance.

The bottom line

VAT in Nigeria is not complicated in principle: you charge it, you claim what you are entitled to, you file on time and you pay what is due. Where businesses get into trouble is in the details, especially now that many of those details have changed.

The good news is that the 2025 reforms work in favour of businesses that keep proper records. Small businesses get more breathing room, and VAT-registered businesses can finally recover VAT on services and assets. But those benefits only reach businesses that update their processes. The ones still running on old habits will pay for it, in lost credits, penalties or both.

If you are not sure where your business stands, the cost of a review with a qualified tax adviser is almost always smaller than the cost of getting it wrong.