LPO vs Invoice in Nigeria: Key Differences and How They Work Together
If you have ever done business with a Nigerian government agency, a bank, a telecoms company, or a large corporation, you have almost certainly encountered an LPO — a Local Purchase Order. Many suppliers receive one and are unsure: do I send an invoice now, or wait? What is the LPO for? How does it relate to my invoice?
This guide clarifies exactly how LPOs work in Nigeria, how they differ from invoices, and how to navigate the LPO-to-payment cycle correctly.
What Is an LPO (Local Purchase Order)?
A Local Purchase Order (LPO) is an official document issued by a buying organisation (a company or government agency) to a supplier, authorising the supplier to provide specified goods or services up to a stated value.
It is called "local" to distinguish it from international purchase orders, which involve cross-border procurement and foreign exchange.
An LPO is essentially a pre-authorisation: the buyer is saying "we have approved this purchase, go ahead and supply — and then invoice us for it."
Key characteristics of an LPO:
- Issued by the buyer (not the supplier)
- Comes before goods are supplied or services are rendered
- Specifies what is being purchased, the quantity, and the agreed price
- Is signed and stamped by an authorised officer in the buying organisation
- Carries an LPO number that must be referenced on the subsequent invoice
- Is NOT a payment — it is an instruction to supply
LPO vs Invoice: The Core Differences
| Feature | LPO | Invoice |
|---|---|---|
| Who creates it | The buyer | The supplier |
| When it is issued | Before supply | After supply |
| Purpose | Authorise the purchase | Request payment |
| Is it legally binding? | Yes — it is a contract to buy | Yes — it is a payment demand |
| Does it transfer money? | No | No (but triggers payment) |
| VAT shown? | Sometimes (estimated) | Yes (actual) |
| Signed by? | Buyer's authorised officer | Supplier |
The Typical LPO-to-Payment Cycle in Nigeria
Here is the standard process for Nigerian companies and government agencies:
Step 1: Request for Quotation (RFQ) The buyer invites you (and usually other suppliers) to submit a quotation for goods or services.
Step 2: You submit your quotation / proforma invoice You send the buyer a formal price offer — either a quotation letter or a proforma invoice.
Step 3: Buyer issues the LPO If your quotation is accepted, the buyer issues a formal LPO referencing your quotation, specifying the quantity, price, and delivery requirements. You receive this LPO before doing any work.
Step 4: You supply the goods or deliver the service You proceed to deliver only after receiving the LPO. Delivering without an LPO from a government agency or large company is risky — if there is no approved LPO, payment may be refused.
Step 5: You raise and submit your invoice After delivery, you raise a commercial invoice referencing the LPO number. The invoice must match the LPO in terms of items, quantities, and prices.
Step 6: The buyer processes payment The buyer's accounts department matches your invoice to the LPO and to the delivery note or goods received note (GRN). When all three match, payment is processed.
What Must Your Invoice Include When Billing Against an LPO?
When you invoice against an LPO, your invoice should include the LPO reference number prominently. This is non-negotiable for government agencies and most large companies — their accounts systems will reject an invoice that cannot be matched to an LPO.
A proper LPO-referenced invoice includes:
- Your business name and address (as registered with CAC)
- Your TIN and VAT registration number (if applicable)
- Invoice number (your own sequential reference)
- Invoice date
- LPO reference number (e.g., "As per LPO No. FMW/2026/LPO/00342 dated 5 May 2026")
- Goods/services supplied — matching exactly the descriptions in the LPO
- Quantities and unit prices — must match the LPO
- VAT — at 7.5% if you are VAT-registered
- Total due
- Your bank account details (NUBAN)
- Delivery note number or reference (if applicable)
If there is any discrepancy between your invoice and the LPO — even a difference in description or quantity — expect delays in payment while the buyer investigates.
LPO vs Proforma Invoice: Are They the Same?
No, and this is a common point of confusion.
| Document | Who Issues It | When | Purpose |
|---|---|---|---|
| Proforma invoice | Supplier | Before supply (in response to enquiry) | Quote the price to the buyer so they can seek approval |
| LPO | Buyer | After approving the proforma invoice | Formally authorise the supplier to proceed |
The typical sequence: buyer enquires → supplier sends proforma invoice → buyer approves and issues LPO → supplier delivers → supplier sends commercial invoice.
LPO vs Invoice Discounting: What Is the Difference?
Invoice discounting is a financing product where a supplier sells its unpaid invoices to a financier at a discount in exchange for immediate cash. For example:
- You have an invoice for ₦5,000,000 due in 60 days from a government agency
- A finance company pays you ₦4,600,000 now (8% discount)
- The finance company collects ₦5,000,000 from the government agency in 60 days
- You lose ₦400,000 but gain immediate cash flow
Invoice discounting is common in Nigeria for suppliers to government agencies where payment delays of 60–180 days are typical.
An LPO, by contrast, is not a financing product — it is simply a purchase authorisation. Some financiers also offer LPO financing (also called LPO funding), where they advance cash to a supplier to fulfil an LPO when the supplier lacks the working capital to do so upfront. This is different from invoice discounting — LPO financing happens before supply; invoice discounting happens after.
Government Procurement LPOs: Special Rules
For LPOs from federal ministries, departments, and agencies (MDAs) and state government bodies, additional rules apply:
- Budget appropriation: the LPO must be backed by an approved budget line — if the government has not appropriated funds, the LPO may be invalid
- Due process: the procurement must follow the Public Procurement Act 2007 (for federal entities) or the relevant state procurement law
- Certificate of No Objection (CNO): some high-value contracts require a CNO from the Bureau of Public Procurement (BPP) before an LPO is issued
- Variation orders: if the scope or price changes after the LPO is issued, a formal variation order must be issued before you can invoice for the additional amount
Delivering against a government LPO without following these steps can result in the invoice being rejected even after delivery.
Common LPO Problems and How to Handle Them
Problem: The LPO amount is less than your quoted price Clarify in writing before delivering. Do not assume the difference will be resolved later.
Problem: The client asks you to start work before the LPO is issued ("verbal LPO") Request a formal LPO in writing before commencing. A verbal instruction from a procurement officer has no legal standing if the invoice is later disputed.
Problem: The LPO has expired (some LPOs have validity dates) Request a new or extended LPO before delivering. Expired LPOs can invalidate your invoice.
Problem: Your invoice does not match the LPO exactly Accounts departments will return the invoice. Reissue it matching the LPO details precisely, or request a revised LPO from the buyer if the scope changed.
Create Your LPO-Referenced Invoice
Once your LPO arrives, creating the corresponding invoice takes under two minutes at InvoiceGenerator.ng. Add the LPO reference number in the invoice notes field, match your line items to the LPO, and download the PDF ready for submission.