Purchase Order Template for Singapore Businesses
A purchase order (PO) is the document you send a supplier to confirm exactly what you want to buy, at what price and on what terms. This purchase order template Singapore guide gives you a copyable layout with every field you need, a worked example with illustrative numbers, notes on GST and UEN, and the mistakes that cause disputes and duplicate orders. Copy the tables below into your own template and adapt the header to your business. For the wider concept — approval flows, PO types and how POs sit in procurement — see our purchase orders 101 guide; this page is the ready-to-use template.
What a purchase order is and why it matters
A purchase order is a commercial document issued by the buyer to a seller that formally commits to buying specific goods or services. Once the supplier accepts it, the PO becomes a binding agreement covering quantities, prices, delivery date and terms. It matters because it creates a paper trail: you can match the PO against the supplier’s invoice and the goods received note (GRN) when stock arrives — the classic three-way match that stops you paying for items you never ordered or never received. For a growing Singapore business, consistent POs are the difference between orderly buying and a drawer full of email confirmations nobody can reconcile.
Fields every Singapore purchase order needs
- Buyer header: your company name, registered address, UEN and contact person.
- Document title and PO number: a clear “Purchase Order” label and a unique running number.
- Dates: PO date and required delivery date.
- Supplier details: supplier name, address, contact and their reference or quotation number.
- Ship-to and bill-to: delivery address (which may differ from your registered address) and billing address.
- Line items: item number, SKU or product code, description, quantity, unit of measure, unit price and line total.
- Financial summary: subtotal, GST (if applicable), shipping and grand total, with the currency stated.
- Terms: payment terms, delivery terms (Incoterms if imported), and any special instructions.
- Authorisation: prepared-by and approved-by with name, signature and date.
The copyable purchase order template
Copy this three-part layout. The first block is the header and parties, the second is the line-item grid with totals, and the third is terms and sign-off. Replace anything in [square brackets] with your own details.
| Field | Enter your details |
|---|---|
| Buyer company / UEN | [Your Company Pte Ltd] · UEN [201XXXXXXX] |
| Buyer address / contact | [Address, Singapore postcode] · [Phone] · [Email] |
| Document title | PURCHASE ORDER |
| PO number | PO-2026-[0001] |
| PO date / required delivery date | [DD/MM/YYYY] / [DD/MM/YYYY] |
| Supplier name / contact | [Supplier name] · Attn: [contact] · [email] |
| Supplier quotation ref. | [Quotation or reference number] |
| Ship to / Bill to | [Delivery address] / [Billing address] |
| No. | SKU / code | Description | Qty | UoM | Unit price | Line total |
|---|---|---|---|---|---|---|
| 1 | [SKU] | [Item description] | [qty] | [each/box] | [S$0.00] | [S$0.00] |
| 2 | [SKU] | [Item description] | [qty] | [each/box] | [S$0.00] | [S$0.00] |
| 3 | [SKU] | [Item description] | [qty] | [each/box] | [S$0.00] | [S$0.00] |
| Subtotal | [S$0.00] | |||||
| GST (if applicable) | [S$0.00] | |||||
| Shipping / handling | [S$0.00] | |||||
| Grand total (SGD) | [S$0.00] | |||||
| Payment terms | Delivery terms | Special instructions |
|---|---|---|
| [e.g. 30 days from invoice] | [e.g. DDP Singapore / ex-works] | [Packaging, labelling, partial delivery rules] |
| Prepared by | Approved by |
|---|---|
| Name: ______ Signature: ______ Date: ______ |
Name: ______ Signature: ______ Date: ______ |
Worked example
These figures are illustrative. Suppose Bright Retail Pte Ltd (UEN 201912345B) raises PO-2026-0087 on 03/02/2026 to Acme Supplies, required by 17/02/2026. Line 1 is SKU BEV-COLA-320-06, “Cola 320ml 6-pack”, 200 units at S$3.20 = S$640.00. Line 2 is SKU SNK-CHIP-100, “Potato chips 100g”, 300 units at S$0.85 = S$255.00. The subtotal is S$895.00; GST at the prevailing rate is added if the supplier is GST-registered; shipping is S$40.00. The approver signs, the PO goes to Acme, and when the goods arrive Bright Retail’s GRN records what was actually delivered. Any short-shipment shows up when the PO, GRN and invoice are matched, so the finance team pays only for what arrived.
Purchase orders, GST and UEN in Singapore
A purchase order is not a tax invoice — it requests goods, it does not account for GST. GST is charged and shown on the supplier’s tax invoice, which must display their GST registration number. Still, it is good practice to show an estimated GST line on the PO so the approved total reflects the likely payable amount. Always include your UEN in the header; suppliers and auditors use it to identify your entity. If you import goods, note the Incoterms and remember that import GST may apply at the point of entry. For current rates and rules, check guidance from the Inland Revenue Authority of Singapore (IRAS) or your accountant, as these change over time.
How to number and file your POs
Use a unique running sequence such as PO-2026-0001, resetting the year prefix annually but never reusing a number. Keep one master log — a spreadsheet or your inventory system — recording PO number, supplier, date, value and status (open, part-received, closed). This lets you spot orders that were placed but never delivered, and it feeds the three-way match. File the signed PO alongside its GRN and invoice so any query can be resolved from a single folder or record.
Common mistakes to avoid
- No unique PO number. Without one you cannot match documents or trace an order later.
- Vague descriptions. “Assorted stock” invites the wrong goods; always include SKU, description and unit of measure.
- Missing approval. An unapproved PO is not a control; require a second signature above a set value.
- Confusing the PO with a tax invoice. The PO requests goods; GST is accounted for on the supplier’s invoice.
- No required delivery date. Without it you cannot chase late suppliers or plan stock cover.
- Duplicate orders. Not logging POs leads to the same order being placed twice by different people.
How WhiteBox helps
WhiteBox generates purchase orders straight from reorder points and forecasts, so quantities, SKUs and supplier details flow from the same real-time source of truth as your stock. When goods arrive, the GRN updates inventory automatically and the PO, receipt and supplier invoice are matched in one place — no spreadsheet reconciliation. For businesses that also want the physical side handled, WhiteBox runs its own Singapore warehouse, so the software and the fulfilment are one company. See pricing or get in touch for a walkthrough.
Frequently asked questions
What is a purchase order in Singapore? It is a document a buyer issues to a supplier committing to buy specific goods at agreed prices and terms. Once accepted it is binding, and it forms part of the three-way match with the GRN and invoice.
Is a purchase order the same as an invoice? No. A PO is issued by the buyer to request goods; an invoice is issued by the supplier to request payment and accounts for GST. They are matched together but serve opposite roles.
Does a Singapore PO need to show GST? It does not have to, because GST is accounted for on the tax invoice. Many businesses show an estimated GST line so the approved total is realistic. Check current IRAS guidance if unsure.
Should I include my UEN on a purchase order? Yes. Your UEN identifies your entity to suppliers and auditors, so include it in the buyer header alongside your registered address.
How should I number purchase orders? Use a unique running sequence such as PO-2026-0001 and never reuse a number, so every PO can be traced and matched to its receipt and invoice.
Related reading: Retail Operations Guide (pillar), Purchase Orders 101, Goods Received Note (GRN) Template, Delivery Order Template for Singapore.
