Common WHT Mistakes Nigerian Businesses Make & How to Fix Them

Ten WHT mistakes that cost Nigerian businesses penalties, lost credits, and NRS audit exposure. Each mistake explained with the fix, the penalty avoided, and the correct approach.

Withholding tax is not complicated in concept — you deduct a percentage from a payment, remit it to the NRS by the 21st, and issue a credit note to the payee. But the simplicity of the concept masks a long list of execution errors that Nigerian businesses make repeatedly. Wrong rates. Wrong bases. Late remittances. Missing credit notes. WHT deducted from VAT-inclusive amounts. Credit notes issued without remittance references. Exempt transactions taxed. Taxable transactions missed. Each mistake has a specific consequence: the 40% penalty for failure to deduct (NTAA Section 105), the 10% per annum plus CBN rate interest for late remittance (Section 107), the lost credits for payees who never receive valid credit notes, and the NRS audit exposure that follows from inconsistencies between your WHT filings and your suppliers’ tax returns.

This guide identifies the ten most common WHT mistakes, explains why each one happens, shows you how to fix it, and gives you the correct approach so it does not happen again.

Mistake 1: Applying the Wrong WHT Rate

WHT rates in Nigeria vary by transaction type and by whether the payee is an individual or a company. The most frequent rate error is applying 10% across the board — because 10% is the most commonly encountered rate — when some transactions attract 5% and some payees qualify for a different rate based on their status.

The Common Rate Errors

Why It Happens

Finance teams often apply a single rate to all vendor payments because their accounting system is not configured to distinguish between transaction types and payee categories. A vendor is set up in the system as “supplier” with a default 10% WHT rate, and every payment to that vendor — whether for consulting, goods supply, or rent — is deducted at 10% regardless of the actual transaction type. Similarly, sole proprietors and individual contractors are frequently treated as companies (10%) because the finance team did not verify their legal status.

The Fix

• Configure your accounting system with WHT rate tables. Map each transaction type to the correct rate for individuals and companies. When processing a payment, the system should prompt the operator to select the transaction type and payee category — and apply the corresponding rate automatically.
• Verify each vendor’s legal status at onboarding. Is the payee a limited liability company (10% on most services) or a sole proprietor/individual (5% on most services)? Request a CAC certificate for companies and confirm individual status for sole proprietors. Record the status in your vendor master file.
• Maintain a WHT rate reference sheet. A one-page summary of all WHT rates by transaction type and payee category, posted where the finance team processes payments. When in doubt, check the sheet before processing.

How to Correct a Past Error

If you over-deducted (applied 10% when 5% was correct), the payee received less than they should have and their credit note shows a higher WHT amount. You can either refund the excess to the payee and issue a corrected credit note, or the payee can claim the full over-deducted amount as a WHT credit against their tax liability — the excess carries forward or becomes refundable. Discuss with the payee which approach they prefer.

If you under-deducted (applied 5% when 10% was correct), you have a shortfall. The NRS may assess you for the difference plus the 40% penalty on the undeducted amount under NTAA Section 105. Remit the shortfall to the NRS as soon as the error is discovered and issue a corrected credit note to the payee.

Mistake 2: Deducting WHT From the VAT-Inclusive Amount

This is the most expensive arithmetic error in Nigerian WHT compliance. VAT and WHT are calculated on the same net amount — the pre-VAT price of the goods or services. WHT is never calculated on the VAT-inclusive total. But many businesses deduct WHT from the gross invoice total (net + VAT), overstating the WHT and creating a cascade of errors across the WHT return, the credit note, and the payee’s records.

The Correct Sequence

On a ₦2,000,000 consulting fee with VAT and WHT (payee is a company):

The ₦15,000 difference on a single invoice seems small. Across 100 invoices per year averaging ₦2,000,000, the cumulative error is ₦1,500,000 in over-deducted WHT — money your suppliers are missing from their payments and will struggle to reconcile against their own records.

Why It Happens

The finance officer looks at the invoice total (₦2,150,000) and applies 10%. It is faster than separating the net amount from the VAT. Some accounting systems default to calculating WHT on the payment amount (which may include VAT) rather than on the invoice line item before VAT. The error persists because neither the payer nor the payee checks until a reconciliation or an audit forces the issue.

The Fix

• Always compute WHT on the pre-VAT amount. Train your finance team that the WHT base is the net price — the same base on which VAT is calculated, not the result after VAT is added.
• Configure your system to separate the WHT base from the payment total. The invoice should have distinct fields for net amount, VAT, and WHT — and the WHT field should reference the net amount only.
• Cross-check every invoice: Net amount × WHT rate = WHT. Net amount × 0.075 = VAT. Payment = Net − WHT + VAT. If the payment does not equal this formula, there is an error.

Mistake 3: Not Deducting WHT at All

Some businesses do not deduct WHT from any of their payments — either because they do not know they are obligated to, because they believe only government agencies must deduct, or because they consider the amounts too small to bother with. This is the most penalised WHT error: under NTAA Section 105, the penalty for failure to deduct is 40% of the amount that should have been deducted.

Who Must Deduct

Every company, government agency, statutory body, and institution making qualifying payments is a withholding agent. This includes private companies of all sizes. If your business pays a consultant ₦500,000, you are obligated to deduct WHT (5% for individual consultants, 10% for companies), remit it to the NRS, and issue a credit note. The size of your business does not exempt you. The size of the payment does not exempt you (though some transaction types have minimum thresholds below which WHT does not apply — verify the specific transaction type).

Payments That Frequently Escape WHT

• One-off vendor payments. A company hires a freelancer for a single project, pays the full amount, and never deducts WHT because the vendor is not in the regular payment system.
• Rent to individual landlords. Companies paying office rent to individual property owners often pay the full amount without deducting 10% WHT — either because the landlord objects or because the finance team does not realise rent attracts WHT.
• Payments to informal suppliers. Cash payments to market suppliers, artisans, and casual workers where no invoice is issued and no WHT system exists. While the absence of an invoice creates its own compliance issues, the WHT obligation technically applies if the payment is for a qualifying transaction.
• Intercompany payments. Payments between related companies (management fees, service charges, cost recharges) within the same group. Some groups pay gross between entities without deducting WHT — believing that intra-group payments are exempt. They are not. WHT applies to related-party payments on the same basis as third-party payments.
• Payments to directors. Director’s fees, sitting allowances, and other payments to company directors beyond their employment salary may be subject to WHT — a point frequently missed by small and medium companies.

The Fix

• Treat every vendor payment as potentially subject to WHT. Build WHT into your payment process: before any payment is released, the finance officer must confirm the transaction type, the payee’s status (individual or company), the applicable WHT rate, and whether the WHT has been deducted.
• Set up a WHT deduction checklist. Every payment above ₦50,000 should pass through a WHT review: Is the payment for a qualifying transaction? What is the correct rate? Has WHT been deducted? Has a credit note been scheduled for issuance?
• Address landlord resistance directly. Landlords who refuse to accept WHT deduction do not change the law. Explain that the WHT is not an additional cost — it is a prepayment of their income tax that they can offset when filing their own return. If a landlord insists on receiving the full amount, the obligation to deduct and remit still falls on you as the payer. Paying gross does not extinguish the obligation — it simply means you bear both the WHT and the 40% penalty.

Mistake 4: Late Remittance to the NRS

WHT deducted in any month must be remitted to the NRS by the 21st of the following month. January deductions are due by 21 February. This deadline is the same as for VAT — but it is different from PAYE, which is due by the 10th. Confusing these deadlines, or simply allowing WHT remittances to slip, triggers automatic penalties.

The Cost of Late Remittance

Under NTAA Section 107, failure to remit WHT attracts:

• The full principal amount (you still owe what you deducted)
• 10% per annum administrative penalty on the unremitted amount
• Interest at the prevailing CBN Monetary Policy Rate (currently around 27.5%) on the unremitted amount from the due date until the date of payment

On a ₦5,000,000 monthly WHT liability that is three months late, the exposure is approximately:

That is ₦468,750 in penalties and interest on a three-month delay — money that buys nothing and achieves nothing. Timely remittance costs ₦0 in penalties.

The Fix

• Set a recurring calendar reminder for the 15th of each month. This gives you six days before the 21st deadline to compile the month’s WHT deductions, prepare the remittance, and process the payment. Do not leave it until the 21st.
• Batch and remit weekly if volumes are high. Nothing prevents you from remitting WHT more frequently than monthly. If your business processes dozens of payments per week, consider weekly remittances — it reduces the risk of a large end-of-month scramble and ensures funds are transmitted before the deadline.
• Use the NRS Self-Service Portal for remittance. Process payments through selfservice.nrs.gov.ng or via Remita with the correct tax type code, your TIN, and the period reference. Keep the electronic receipt — it is your proof of timely remittance.

Mistake 5: Not Issuing WHT Credit Notes to Payees

You deducted the WHT. You remitted it to the NRS. But you never issued the credit note to the person you deducted from. From the NRS’s perspective, you have complied. From the payee’s perspective, you have created a tax liability they cannot offset.

The Impact on the Payee

The payee’s annual tax liability is computed on their gross income — the full amount before WHT. When they file their return, they subtract WHT credits from their tax liability. Without a credit note from you, they cannot prove the WHT was deducted and remitted. The State IRS may refuse to accept the credit, and the payee pays tax on income for which WHT has already been paid — double taxation on the same naira.

For a consultant earning ₦20,000,000 from corporate clients, uncollected credit notes could represent ₦1,000,000 (5% × ₦20,000,000) in lost credits. That is ₦1,000,000 in additional tax the consultant pays because their clients did not issue a piece of paper.

Why It Happens

Most businesses have a system for deducting and remitting WHT — it is part of the payment process. Far fewer have a system for issuing credit notes — because the credit note does not affect the payer’s own compliance. The payer has no direct penalty for not issuing the note (though NTAA Section 127 provides for administrative penalties for contravention of WHT provisions). The consequence falls on the payee, who is not in the room when the payer’s finance team skips this step.

The Fix

• Make credit note issuance part of the remittance process. The step after “remit WHT to NRS” should be “issue credit note to payee.” Do not treat these as separate workflows — they are two halves of the same obligation.
• Automate credit note generation. If your accounting system processes the WHT deduction, it has the data needed to generate the credit note — payee name and TIN, gross amount, WHT rate and amount, transaction date, and your NRS remittance reference. Configure the system to produce the note automatically when the remittance is processed.
• Set a 14-day target. Issue every credit note within 14 days of the WHT remittance. By this point, you have the NRS receipt (which provides the remittance reference), and the transaction details are fresh. Waiting until the payee chases you — which may be months later — makes it harder to locate the records and delays the payee’s tax filing.
• Respond to payee requests promptly. If a vendor or consultant requests a credit note, treat it as an urgent compliance matter — not an administrative nuisance. They need the note to file their return correctly. A 48-hour turnaround on credit note requests is reasonable and achievable.

Mistake 6: Deducting WHT From Exempt Transactions

Not every payment attracts WHT. Some transactions are specifically exempt — and deducting WHT from an exempt payment creates problems for both parties: the payer remits money the NRS should not have received, and the payee receives less than they are owed with a credit note for a tax that should not exist.

Common Exempt Transactions Where WHT Is Incorrectly Deducted

• Interest on FGN Bonds and Treasury Bills. Income from government securities is exempt from WHT. If a bank or financial institution deducts WHT from your FGN Bond interest or T-bill discount, the deduction is incorrect.
• Payments to tax-exempt organisations. Certain organisations — diplomatic missions, international organisations with exemption agreements, some government agencies — are exempt from WHT. Deducting WHT from their payments is incorrect.
• Payments below minimum thresholds. Some WHT categories have minimum transaction thresholds below which WHT does not apply. Deducting WHT on a ₦10,000 supply of goods when the threshold has not been met is incorrect.
• Salary payments. Employment income is subject to PAYE, not WHT. Deducting WHT from an employee’s salary (instead of PAYE) is a classification error that creates a compliance problem on both the WHT and PAYE sides.

The Fix

• Maintain a list of exempt transaction types and exempt payees. Update it whenever a new exemption order or agreement is issued.
• Verify before deducting. If you are unsure whether a transaction attracts WHT, check the transaction type against the WHT schedule in the NTA 2025 or consult your tax professional. A two-minute verification prevents a two-month refund process.
• Correct errors promptly. If you deducted WHT from an exempt payment, refund the incorrect deduction to the payee and adjust your WHT return. If the WHT has already been remitted to the NRS, you may need to apply for a refund from the NRS or offset the overpayment against future remittances — consult your tax professional on the most practical approach.

Mistake 7: Inconsistent WHT Records

Your WHT deduction records, your remittance records, and your credit notes should all tell the same story. When they do not — the deduction schedule shows ₦3,200,000, the remittance receipt shows ₦3,000,000, and the credit notes total ₦3,100,000 — you have a reconciliation problem that the NRS will find during an audit.

Common Inconsistencies

• Deductions not remitted. WHT was deducted from a payment in December but not included in the December remittance — it was accidentally left out, and by January the finance team has moved on to the new month.
• Remittances without matching deductions. A lump-sum remittance was made to “clear” WHT obligations, but it does not match the individual deductions made during the period.
• Credit notes issued for amounts different from actual deductions. A credit note shows ₦100,000 in WHT, but the actual deduction from the payment was ₦95,000 — a data entry error when preparing the note.
• Different periods on the deduction, remittance, and credit note. The deduction was made in March, the remittance was included in the April batch, and the credit note shows a February date — creating a timing inconsistency that confuses both the payee and the NRS.

The Fix

• Reconcile monthly. At the end of each month, reconcile three numbers: total WHT deducted from all payments (from your payment records), total WHT remitted to the NRS (from your remittance receipt), and total WHT credit notes issued (from your credit note log). All three should match. Any discrepancy must be investigated and resolved before filing the WHT return.
• Maintain a single WHT register. A spreadsheet or system log that records every WHT deduction with the payee name, TIN, transaction type, gross amount, WHT rate, WHT amount, deduction date, remittance date, remittance reference, credit note date, and credit note number. One register, one source of truth.
• Close each month before starting the next. Do not carry unreconciled WHT from one month into the next. Resolve discrepancies in the month they occur — compounding unreconciled differences across multiple months creates an audit exposure that grows exponentially harder to resolve.

Mistake 8: Applying Domestic Rates to Treaty-Protected Non-Residents

When a Nigerian company pays a non-resident supplier, contractor, or shareholder from a DTA country, the WHT rate may be reduced under the treaty. Applying the standard domestic rate when a lower treaty rate applies results in over-deduction — the non-resident receives less than they should, and correcting the error requires a cross-border refund process that neither party wants to navigate.

The Common Error

A Nigerian company pays ₦10,000,000 in management fees to a UK parent company. The domestic WHT rate on management fees paid to companies is 10%. The Nigeria-UK DTA may provide a reduced rate on certain service payments. The finance team applies 10% by default — deducting ₦1,000,000 — without checking whether the treaty rate applies.

The Reverse Error

Equally dangerous: applying a treaty rate without proper documentation. The company applies 7.5% on dividends to a “UK shareholder” who is actually resident in a non-treaty jurisdiction and merely has a UK bank account. If the NRS audits and finds the treaty rate was incorrectly applied, the company owes the shortfall (2.5% of the gross dividend) plus the 40% penalty for under-deduction.

The Fix

• Check the DTA before every payment to a non-resident. Confirm whether a treaty exists, what rate it provides for the specific transaction type, and whether the non-resident qualifies (beneficial ownership, tax residence, holding thresholds).
• Require a Certificate of Tax Residence. Before applying any treaty rate, obtain a current tax residence certificate from the non-resident — issued by their home country’s tax authority. Keep the certificate on file.
• When in doubt, apply the domestic rate. The non-resident can apply for a refund of the excess through the DTA’s Mutual Agreement Procedure. Over-deduction is correctable. Under-deduction triggers the 40% penalty on the shortfall and is far harder to resolve.

Mistake 9: Treating WHT as an Expense Instead of a Liability

Some businesses — particularly smaller ones without dedicated tax teams — treat WHT deductions as a business expense rather than a trust liability. The WHT is deducted from the vendor’s payment, but instead of being ring-fenced and remitted to the NRS, it enters the company’s general cash flow and gets spent on other things. By the time the remittance deadline arrives, the funds are not available.

Why This Is Dangerous

WHT deducted at source is not the company’s money. It is the government’s money that you are holding temporarily. The NTAA treats unremitted WHT with the same severity as misappropriated trust funds — the penalties (principal + 10% per annum + CBN rate interest) compound, and persistent non-remittance can lead to criminal prosecution of the company’s directors under NTAA Section 161, which provides for personal liability of directors for a company’s tax defaults.

The Fix

• Segregate WHT funds. When you deduct WHT from a payment, move the deducted amount into a separate bank account or sub-account designated for tax remittances. This ensures the funds are available on remittance day and cannot be accidentally spent.
• Treat the 21st as a standing payment order. WHT remittance is not discretionary. It is not something you do “when cash flow allows.” It is a trust obligation with a fixed deadline. Treat it with the same priority as payroll — non-negotiable, non-deferrable.

Mistake 10: Not Deducting WHT on Intercompany Transactions

Groups of related companies frequently pay management fees, technical service charges, royalties, rent, and cost recharges between entities without deducting WHT — on the assumption that intra-group payments are exempt or that the WHT “washes out” because both companies are in the same group. Neither assumption is correct.

The Rule

WHT applies to qualifying payments between related companies on exactly the same basis as payments to unrelated third parties. If Company A pays a ₦50,000,000 management fee to Company B (its parent), Company A must deduct 10% WHT (₦5,000,000), remit it to the NRS, and issue a credit note to Company B. Company B includes the credit in its CIT return.

The WHT does not “wash out” — it creates a timing difference. Company A remits ₦5,000,000 to the NRS by the 21st of the following month. Company B claims the ₦5,000,000 credit when it files its CIT return months later. The NRS holds the cash in between. If Company A does not deduct, it faces the 40% penalty — and Company B has no credit note to present.

The Fix

• Apply WHT to all intercompany payments. Management fees, service charges, royalties, rent, interest, and any other qualifying payment between group companies must be subject to WHT at the applicable rate. No exceptions.
• Coordinate credit note issuance within the group. The paying entity issues the credit note to the receiving entity. The receiving entity includes the credit in its CIT return. This is an internal process — it should be seamless, but it still must happen. A group finance team that deducts WHT but does not issue internal credit notes creates credit losses within its own group.
• For cross-border intercompany payments, apply the correct rate. Payments to a foreign parent or affiliate are non-resident payments — subject to the domestic rate or the applicable DTA rate. The transfer pricing documentation should also be consistent with the WHT treatment.

A Monthly WHT Compliance Checklist

1. By the 5th: Review all payments made in the preceding month. Verify that WHT was deducted at the correct rate on every qualifying payment. Flag any payments where WHT was missed or applied at the wrong rate.
2. By the 10th: Compile the monthly WHT schedule — payee name, TIN, transaction type, gross amount, WHT rate, WHT amount for every deduction. Reconcile the total against your payment records.
3. By the 15th: Prepare the NRS remittance. Verify that the remittance amount matches the total on your WHT schedule. Process the payment through the NRS portal or Remita. Save the remittance receipt.
4. By the 21st: Confirm remittance is processed and receipt is on file. This is the legal deadline — but with the work done by the 15th, the 21st is a confirmation step, not a scramble.
5. By month-end: Issue WHT credit notes to all payees. Add the NRS remittance reference to each note. File copies. Update the WHT register.
6. Monthly reconciliation: Verify that total WHT deducted = total WHT remitted = total WHT on credit notes issued. Investigate and resolve any discrepancy before closing the month.

Final Thoughts

WHT mistakes fall into two categories: mistakes that cost you money (late remittance penalties, non-deduction penalties) and mistakes that cost your vendors money (wrong rates, missing credit notes, incorrect bases). Both categories are avoidable with a configured system, a trained finance team, and a monthly routine that treats WHT as a trust obligation, not an administrative afterthought.

The ten mistakes in this guide are not obscure edge cases — they are the errors the NRS finds in audit after audit, in companies of all sizes, across every industry. The fixes are not complex — they are systems, checklists, and habits. A properly configured accounting system that maps WHT rates by transaction type, a monthly reconciliation that matches deductions to remittances to credit notes, and a 14-day target for credit note issuance would eliminate the majority of WHT compliance problems in Nigerian business.

Verify WHT rates and computations with our Tax Calculators. Ask a specific WHT question to the AI Tax Assistant. For WHT audit defence, rate disputes, or corrections to past filings, connect with a specialist through the Tax Professional Directory. For the NRS remittance portal, visit selfservice.nrs.gov.ng.

FAQs About Common WHT Mistakes in Nigeria

What is the penalty for not deducting WHT?

40% of the amount that should have been deducted, under NTAA Section 105. This falls on the withholding agent (the company making the payment), not the payee. In addition, the principal amount is still owed to the NRS. For a ₦10,000,000 payment where 10% WHT should have been deducted, the exposure is ₦1,000,000 principal plus ₦400,000 penalty — ₦1,400,000 total.

Should WHT be calculated on the VAT-inclusive or VAT-exclusive amount?

VAT-exclusive (the net amount). WHT and VAT are both calculated on the same pre-VAT base. WHT is never applied to the VAT component. On a ₦2,000,000 net invoice with ₦150,000 VAT, WHT is calculated on ₦2,000,000 — not on ₦2,150,000.

What if I applied the wrong WHT rate?

If you over-deducted, the payee received less than owed — refund the excess and issue a corrected credit note, or the payee can claim the full over-deducted amount as a WHT credit. If you under-deducted, remit the shortfall to the NRS immediately and issue a corrected credit note. Under-deduction triggers the 40% penalty on the shortfall, so prompt correction is essential.

Do I need to deduct WHT on payments between related companies?

Yes. WHT applies to qualifying intercompany payments — management fees, service charges, royalties, rent, interest — on the same basis as third-party payments. The paying entity deducts at the applicable rate, remits to the NRS, and issues a credit note to the receiving entity. The receiving entity offsets the credit against its own CIT liability.

What happens if I deducted WHT but forgot to remit?

You owe the principal amount plus 10% per annum plus interest at the CBN Monetary Policy Rate from the due date until payment, under NTAA Section 107. WHT deducted but not remitted is treated as trust money held on behalf of the government. Persistent non-remittance can trigger criminal liability for company directors under Section 161. Remit immediately upon discovering the oversight.

How do I correct a WHT credit note that contains errors?

Issue a corrected credit note to the payee with the accurate information — correct TIN, correct gross amount, correct WHT rate and amount, and the correct NRS remittance reference. Do not ask the payee to alter the note themselves. If the error affects the remittance amount (you remitted too much or too little), adjust in the following month’s remittance or file a correction with the NRS.

Can a vendor refuse to accept WHT deduction?

A vendor may object, but their objection does not remove your legal obligation. As the withholding agent, you are required by law to deduct WHT on qualifying payments. If you pay gross because the vendor insists, you still owe the WHT to the NRS — and you face the 40% non-deduction penalty. Explain to the vendor that WHT is a prepayment of their own tax, not a cost, and that they will receive a credit note to offset it against their liability.