How to Obtain a WHT Credit Note and Use It to Offset Your Tax

How WHT credit notes work in Nigeria. How to obtain them from clients, verify them, present them to the tax authority, and offset them against your PIT or CIT liability.

Every time a client deducts withholding tax from your invoice before paying you, that money goes to the NRS on your behalf. It is a prepayment of your income tax — not a fee, not a charge, and not money lost. But it only reduces your tax bill if you have the credit note to prove it.

Without the credit note, the tax authority treats your liability as if no WHT was ever deducted. You compute your annual tax, and the full amount is due — even though your clients have already remitted a portion to the NRS. The result is double taxation on the same income: once through WHT and once through your annual return.

This guide explains what a WHT credit note is, how to obtain one from every client who deducts WHT, how to verify that it is valid, and exactly how to present it to the State IRS or NRS to reduce the tax you owe on filing.

How Withholding Tax Works in Nigeria

Withholding tax is a mechanism where the person paying you deducts a percentage of your payment and remits it directly to the NRS — before the balance reaches your account. The WHT is not an additional tax. It is an advance payment of the income tax you will owe on that income at year-end. When you file your annual return, you compute your total tax liability and subtract all WHT that was deducted during the year. The difference is what you actually pay.

Who Deducts WHT

Any company or government agency making payments to suppliers, contractors, consultants, landlords, or service providers is required to deduct WHT at the applicable rate. The obligation falls on the payer, not the payee. If BrightStar Industries engages you as a consultant and pays you ₦2,000,000, BrightStar deducts WHT (5% for individuals, 10% for companies on consulting fees), remits it to the NRS by the 21st of the following month, and pays you the balance.

Common WHT Rates

The WHT deadline for the withholding agent is the 21st of the month following the deduction. January deductions must be remitted by 21 February. The agent must also issue you a credit note — the document that proves the deduction was made and remitted.

What a WHT Credit Note Contains

A valid WHT credit note is not a casual receipt or an email confirmation. It is an official document — prescribed by the tax regulations — that the withholding agent must issue to the person whose payment was subjected to WHT. To be valid for offsetting your tax, the credit note must contain specific information.

Mandatory Fields

• Name of the withholding agent (your client). The company or entity that deducted the WHT.
• TIN of the withholding agent. The client’s Tax Identification Number — this allows the NRS to verify that the WHT was actually remitted.
• Name of the beneficiary (you). Your name or your company’s name as the person whose income was subject to WHT.
• TIN of the beneficiary. Your Tax Identification Number.
• Nature of the transaction. A description of the payment — consulting fees, rent, management fee, supply of goods, etc.
• Gross amount of the transaction. The full amount before WHT was deducted.
• WHT rate applied. The percentage deducted (5%, 10%, etc.).
• WHT amount deducted. The naira amount that was withheld.
• Date of the transaction or payment. When the payment was made and the WHT deducted.
• Period covered. The month or period to which the WHT relates.
• NRS remittance reference. Evidence that the WHT was actually remitted to the NRS — a payment reference, receipt number, or e-ticket number from the NRS portal.

If any of these fields is missing — particularly the TINs of both parties and the NRS remittance reference — the credit note may not be accepted by the State IRS or NRS when you present it to offset your tax. A credit note without a remittance reference is an acknowledgement that WHT was deducted, but not proof that it was remitted. The tax authority cares about remittance — deduction alone is not enough.

How to Obtain Your WHT Credit Note

The responsibility for issuing the credit note falls on the withholding agent — your client. But the consequences of not having it fall on you. If your client does not issue the note, you lose the credit. This makes collecting credit notes an active process, not a passive one.

Step 1: Include WHT Terms in Your Contracts and Invoices

Before the work begins, establish the expectation. Your contract or engagement letter should state that the client will deduct WHT at the applicable rate and issue a WHT credit note within 30 days of payment. Your invoice should include a line showing the WHT deduction and the expected credit note.

Sample invoice line:

By showing the WHT calculation on the invoice, you formalise the deduction and create a documented trail from invoice to payment to credit note.

Step 2: Request the Credit Note Immediately After Payment

The moment a client pays you net of WHT, send a request for the credit note. Do not wait until year-end. A request sent 48 hours after payment is far more likely to be fulfilled than one sent six months later, when the client’s finance team has moved on to other priorities and the remittance records are harder to locate.

A simple email to the client’s finance or accounts department is sufficient:

“Dear [Finance Contact], we received payment of ₦3,900,000 on [date] for Invoice [number], net of 10% WHT (₦400,000) on the ₦4,000,000 consulting fee. Please issue the WHT credit note for this deduction at your earliest convenience. Our TIN is [your TIN].”

Step 3: Maintain a WHT Tracking Register

Create a spreadsheet that tracks every WHT deduction throughout the year. For each deduction, record:

Review this register weekly. Any row with “No” in the credit note column that is more than 30 days old should trigger a follow-up. Any row more than 60 days old should trigger an escalation.

Step 4: Escalate When Credit Notes Are Not Forthcoming

If the client’s finance team does not respond to your initial request, escalate:

• Second request (30 days): Follow up with a specific email referencing the invoice number, payment date, and WHT amount. Copy the client’s project manager or your primary contact at the company.
• Formal escalation (60 days): Write to the client’s finance director or managing director. State that you are legally entitled to the credit note and that your tax compliance depends on receiving it. Reference the NTAA provisions requiring the withholding agent to issue the note.
• Tax agent intervention (90 days): If internal escalation fails, engage your tax professional to write to the client on your behalf. A letter from an accredited tax practitioner referencing the specific legal obligation often produces results where informal requests did not.
• NRS verification (last resort): If the client cannot or will not issue the credit note, check whether the WHT was actually remitted. Your tax professional or the State IRS may be able to verify the remittance through the NRS records using the client’s TIN and the transaction period. If the remittance is confirmed, the State IRS may accept alternative evidence of the deduction — but this is more difficult and time-consuming than simply collecting the credit note.

Step 5: Verify Each Credit Note When Received

When you receive a credit note, verify it against your WHT register before filing it:

• Does the client name and TIN match the entity that made the payment?
• Does the gross amount match your invoice?
• Does the WHT rate match the applicable rate for the transaction type?
• Does the WHT amount match your calculation (gross amount × WHT rate)?
• Is your name and TIN correct on the note?
• Is there an NRS remittance reference?

A credit note with your name misspelt, the wrong TIN, an incorrect gross amount, or a missing remittance reference may be rejected by the State IRS. Catch errors immediately and request a corrected note from the client — corrections are easier to obtain when the transaction is recent than when it is months old.

How to Use WHT Credit Notes to Offset Your Tax

Once you have collected all your WHT credit notes for the year, they become credits against your annual tax liability — reducing the amount you owe when you file your return.

For Individuals (PIT)

When you file your annual PIT return with your State IRS by 31 March:

1. Compute your total annual tax liability using the NTA 2025 tax bands (0% to 25% on chargeable income)
2. Total all WHT credit notes received during the year
3. Subtract the total WHT credits from your computed tax liability
4. The result is the tax you actually owe — or, if WHT credits exceed your liability, the credit you carry forward

Worked Example: Self-Employed Consultant

Amara is a freelance management consultant. Her 2026 figures:

Tax computation:

Amara’s five corporate clients deducted 5% WHT on her consulting fees throughout the year. Her WHT credit notes total:

Tax payable after WHT offset: ₦1,773,600 − ₦900,000 = ₦873,600

Without collecting and presenting the credit notes, Amara would owe the full ₦1,773,600. With them, she pays ₦873,600 — a ₦900,000 difference. That ₦900,000 was already deducted from her payments during the year. If she does not claim it, she pays it twice.

For Companies (CIT)

The process is identical in principle. The company computes its CIT liability (30% on chargeable profits for standard companies), totals all WHT credit notes received during the year, and subtracts the credits from the CIT liability. The balance is the CIT payable. WHT credits are presented with the CIT return filed with the NRS.

Worked Example: Small Company

TechBridge Solutions Ltd provides IT services to corporate clients. Its 2026 figures:

TechBridge’s clients deducted 10% WHT on IT service fees throughout the year, totalling ₦4,500,000 (10% × ₦45,000,000).

CIT payable after WHT offset: ₦4,500,000 − ₦4,500,000 = ₦0

TechBridge’s WHT credits completely offset its CIT and development levy liability. It owes nothing further at filing — provided it has collected and presents all ₦4,500,000 in credit notes. If even one credit note is missing, the company underclaims and pays CIT it does not owe.

What If WHT Credits Exceed Your Tax Liability?

This happens more often than you might expect — particularly for companies with high WHT rates (10% on service fees) relative to their profit margins, and for individuals whose deductions (expenses, pension, rent relief) significantly reduce their chargeable income below the WHT base.

How Excess Credits Are Handled

• Carry forward. Excess WHT credits are carried forward and offset against your tax liability in the following year. If your 2026 WHT credits exceed your 2026 tax by ₦500,000, that ₦500,000 is applied against your 2027 tax. This is the default treatment and the most commonly applied in practice.
• Refund. Under the NTA 2025, taxpayers are entitled to request a refund of excess WHT credits. In practice, obtaining a cash refund from the NRS or State IRS requires persistent engagement, complete documentation, and time. Many taxpayers find it more practical to carry the credit forward rather than pursue a refund — but the legal entitlement exists, and for large excess amounts, the refund route is worth pursuing with professional assistance.

When Excess Credits Accumulate Over Multiple Years

If your WHT credits consistently exceed your tax liability year after year (because your effective WHT rate exceeds your effective income tax rate), the carried-forward credits build up. This is a cash flow issue — your clients are over-prepaying your tax, and the money sits with the NRS instead of in your account. In this situation:

• Review whether the WHT rate being applied is correct. If clients are deducting 10% when the correct rate is 5% (for example, treating your business as a company when it is a sole proprietorship), the deduction itself is wrong and should be corrected at source.
• Engage a tax professional to file a formal refund application with the NRS or State IRS. Large, persistent excess credits are the strongest case for a cash refund.
• Consider the impact on your business structure. If you are a sole proprietor consistently over-credited because the WHT rate (5%) exceeds your effective PIT rate (which can be under 5% after deductions), the excess is a feature of the system — you will need to claim it back through carry-forward or refund.

Presenting WHT Credit Notes to the Tax Authority

What to Submit

When filing your annual return (PIT or CIT), present the following to the tax authority:

• All original WHT credit notes (or certified copies) — one for each WHT deduction made by each client during the year
• A WHT summary schedule — a table listing every credit note with client name, TIN, transaction description, gross amount, WHT rate, WHT amount, payment date, and NRS remittance reference. This schedule gives the tax officer a single-page overview of all credits being claimed.
• Your tax computation showing the total tax liability, the total WHT credits, and the net tax payable

How the Tax Authority Verifies Credits

The State IRS or NRS does not simply accept WHT credit notes at face value. The verification process includes:

• Cross-referencing with the withholding agent’s records. The NRS receives WHT remittances from withholding agents and maintains a database of deductions. The tax authority can check whether the WHT amount shown on your credit note was actually remitted by the client — and whether it was remitted on time.
• TIN verification. Both your TIN and the client’s TIN are verified against the NRS database. If either TIN is invalid or unregistered, the credit note may be queried.
• Amount verification. If the WHT amount on your credit note does not match the amount the client remitted for that transaction and period, the discrepancy must be resolved.

This verification process is why the NRS remittance reference on the credit note is critical. A credit note with a remittance reference enables quick verification — the tax authority can confirm remittance in minutes. A credit note without one requires manual investigation, which delays the processing of your return and your credit claim.

Common WHT Credit Note Problems and Solutions

Problem 1: Client Did Not Issue a Credit Note

The most common problem. The client deducted WHT but never issued the credit note — either because their finance team did not process it, because they do not have a system for issuing notes, or because they did not realise they were obligated to.

Solution: Follow the escalation process described above — immediate request after payment, 30-day follow-up, 60-day formal escalation, tax agent intervention, and NRS verification as a last resort. Prevention is better: include the credit note requirement in your contracts and invoices upfront.

Problem 2: Client Deducted WHT But Did Not Remit It

The client deducted WHT from your payment and issued a credit note, but never actually remitted the money to the NRS. When the tax authority tries to verify the credit, it finds no matching remittance.

Solution: This is the client’s failure, not yours — the obligation to remit falls on the withholding agent, and the penalty for non-remittance (NTAA Section 107: principal + 10% per annum + CBN rate interest) applies to them. However, the practical consequence falls on you: the tax authority may refuse to credit the WHT against your liability until the remittance is confirmed. Engage your tax professional to raise the issue with the client and, if necessary, with the NRS. In some cases, the NRS pursues the withholding agent for the unremitted amount — which resolves your credit once the remittance is made.

Problem 3: Credit Note Has Errors

Your name is misspelt. Your TIN is wrong. The gross amount does not match your invoice. The WHT rate is incorrect. The period is wrong.

Solution: Return the credit note to the client with specific corrections required. Do not attempt to alter the note yourself — an amended note must be issued by the withholding agent. Request the correction promptly; the longer you wait, the harder it becomes for the client to locate the original records and issue a revised note.

Problem 4: WHT Was Deducted at the Wrong Rate

The client deducted 10% WHT on your consulting fee, but you are an individual — the correct rate is 5%. Or the client deducted 5% on rent payments, where the correct rate is 10%.

Solution: If the client over-deducted (took 10% when 5% was correct), you have been over-prepaid. The excess 5% is still a credit against your tax liability — you can claim the full 10% as WHT credits and either offset it or carry it forward. Alternatively, you can request the client to refund the excess 5% and issue a corrected credit note. If the client under-deducted (took 5% when 10% was correct), the client has a compliance exposure — they may owe the shortfall to the NRS. For your purposes, you claim the 5% that was actually deducted.

Problem 5: You Lost the Credit Note

Solution: Contact the client and request a duplicate. If the client cannot issue a duplicate, gather alternative evidence: your invoice, the payment receipt showing the net amount, bank statements showing the net payment, and correspondence with the client confirming the WHT deduction. Present this alternative evidence to the State IRS with an explanation. Some State IRS offices accept alternative evidence; others insist on the original credit note. A tax professional can advise on your specific State IRS’s practice.

WHT on Investment Income: A Special Case

WHT on dividends (10%) and interest (10%) is typically deducted at source by the paying company or bank and treated as a final tax for individual investors. You do not need to collect credit notes for these deductions or present them on your annual return — the WHT settles your tax obligation on that income.

However, there are situations where investment WHT credit notes become relevant:

• Companies receiving dividends or interest. For corporate recipients, WHT on dividends and interest may not be a final tax — the company includes the income in its CIT return and offsets the WHT credits against its CIT liability. The company needs credit notes from the paying entity.
• WHT incorrectly deducted on exempt instruments. If a bank or intermediary deducted WHT on FGN Bond interest or Treasury Bill discount (which are exempt), you need evidence to claim a refund or credit. The deduction should not have occurred, and the credit note (or bank statement showing the deduction) supports your refund claim.
• Individuals with significant investment income who file comprehensive returns. If you declare all income sources on your annual return (including investment income) and want to ensure the WHT is properly credited, retain dividend and interest statements as evidence of WHT already paid.

The Annual Routine: A WHT Credit Note Collection Checklist

Final Thoughts

A WHT credit note is not a piece of paper — it is money. Every credit note you collect reduces your tax liability naira for naira. Every credit note you do not collect is money you have already paid to the NRS through your client’s deduction that you can never recover without the proof. On ₦18,000,000 in consulting income, uncollected credit notes cost Amara ₦900,000. On ₦45,000,000 in IT service revenue, uncollected credit notes cost TechBridge Solutions ₦4,500,000. These are not theoretical losses — they are the exact amounts these taxpayers would pay twice if they did not collect and present the credit notes.

The system works in your favour if you work the system: include WHT terms in contracts, request credit notes within 48 hours of payment, track every deduction in a register, escalate when notes are late, verify each note when received, and present the complete set with your annual return. The 15 minutes per week spent on WHT tracking pays for itself many times over at filing time.

Compute your tax liability and see the impact of WHT credits with our PAYE Calculator (individuals) or CIT Calculator (companies). Ask a specific WHT credit question to the AI Tax Assistant. For persistent credit note problems, NRS verification, or refund applications for excess credits, connect with a specialist through the Tax Professional Directory. For the NRS portal, visit selfservice.nrs.gov.ng.

FAQs About WHT Credit Notes in Nigeria

What is a WHT credit note?

An official document issued by the client (withholding agent) who deducted withholding tax from your payment. It proves that WHT was deducted and remitted to the NRS on your behalf. You present credit notes when filing your annual return to offset the WHT against your income tax liability — reducing the amount you owe.

Who is responsible for issuing the credit note?

The withholding agent — the company or entity that deducted the WHT from your payment. They are legally obligated to issue the credit note to you. However, the consequence of not having the note falls on you — without it, you cannot claim the credit against your tax. Always request the note proactively after every payment.

What if my client did not issue a credit note?

Follow up immediately. Send a specific request referencing the invoice, payment date, and WHT amount. If the client does not respond within 30 days, escalate to their finance director or managing director. If escalation fails, engage a tax professional to make a formal request or to verify the remittance through NRS records. Include the WHT requirement in all future contracts to prevent recurrence.

Can WHT credits exceed my tax liability?

Yes. If your WHT credits for the year exceed your computed tax liability, the excess is carried forward as a credit against next year’s tax. You may also apply for a cash refund from the NRS or State IRS, though refunds take time and require complete documentation. For persistently large excess credits, professional assistance with the refund application is recommended.

Does WHT on dividends and interest count as a credit note I need to collect?

For most individual investors, WHT on dividends (10%) and interest (10%) is a final tax — you do not need to collect credit notes or report these on your annual return. For companies, WHT on investment income may be offset against CIT — the company should collect credit notes from the paying entity. If WHT was incorrectly deducted on exempt instruments (FGN Bonds, Treasury Bills), retain the evidence to support a refund claim.

How do I present WHT credit notes when filing my return?

Submit all original credit notes (or certified copies) with your annual return, accompanied by a WHT summary schedule listing every credit note — client name, TIN, gross amount, WHT rate, WHT amount, payment date, and NRS remittance reference. Include the total WHT credits in your tax computation, showing the gross tax liability minus WHT credits equals net tax payable.

What if the credit note has errors?

Return it to the client with the specific corrections needed — wrong name, wrong TIN, wrong amount, wrong rate, or missing remittance reference. The client must issue a corrected note. Do not alter the note yourself. Request corrections promptly while the transaction records are still accessible — corrections become harder to obtain as time passes.