Pro-Forma Invoices and Purchase Orders: Paperwork That Protects You

One supplier delay once cost US$50,000 — and the importer didn't pay a cent of it. A solar-lamp order ran late, threatening a retail promotion, and because the purchase order contained a signed delay-penalty clause, the factory air-freighted 10% of the order (a full 20-foot container's worth of goods) at its own expense. No signed terms, no claim. That's the whole argument for taking your paperwork seriously.

Here's the order-document flow we use, and what belongs in each piece.

The order flow in four steps

1. Negotiate price, specs, lead time and payment terms.
2. Send your Purchase Order (PO) — your document, your terms.
3. Supplier returns a Pro-Forma Invoice (PI) confirming the deal.
4. Verify the PI, then pay the deposit (30%, as covered in our payments post).

The critical subtlety: don't just countersign the supplier's PI and call it a contract. His PI contains his terms. Have the supplier sign your purchase order containing your purchase terms. Whoever's document gets signed sets the rules when something goes wrong.

What goes in your Purchase Order

Treat the PO as the single source of truth the factory works from. Ours always includes:

• Price and article number, including exact colour references
• A product picture attached — pictures kill ambiguity that words leave open
• Quantity, shipment date and payment terms
• Notice that a third-party inspection will occur, at your cost — and that any re-inspection after a failure is at the supplier's cost
• The inspection date and your logistics provider
• Label and carton-marking instructions, export carton markings, and rating labels
• The destination address (your warehouse, 3PL or freight forwarder's depot in NZ)

Two clauses earn their keep more than all the rest:

The delay-penalty clause. Make the supplier liable for late shipment — a penalty amount and/or the air-freight difference to still hit your date. Without a signed agreement you can claim nothing; with one, factories have paid five-figure air-freight bills.

The re-inspection clause. One line: "Costs of re-inspection, due to rejections, will be at supplier's cost." Suppliers who know a failed inspection costs them money pay more attention to your order on the line.

Checking the Pro-Forma Invoice

The PI is the supplier's confirmation — and where "typos" creep in. Before you pay anything, check: unit price, quantity, payment terms, shipment terms and your order number. A unit price that's drifted two cents, a quantity that's quietly become the supplier's preferred MOQ, or payment terms that have morphed from 30/70 to 50/50 — catch it now, because your deposit locks it in.

Also confirm the bank details on the PI match what you've verified directly with your contact. Any change of beneficiary account mid-deal deserves a phone or video call before money moves.

The admin set that keeps you sane

Importing is an administration business wearing a trading costume. Set up these documents once and reuse them on every order:

• An order follow-up checklist per order — small orders get deprioritised in factory queues, so monitor weekly and keep reminding the factory of deadlines.
• A vendor profile form per supplier — capacity, staff counts, certifications, main customers.
• A product "shopping list" spreadsheet — photo, source link, price, margin notes for every idea you're tracking.
• A folder per supplier holding every quotation, certificate and email from day one. You will need that message from months ago.

Some details — shipping marks, final packaging artwork files — are normally finalised after the order lands, and that's fine. Just have your instructions ready in advance so you're never the reason for a hold-up.

The pre-order checklist

Before the deposit leaves your account, tick every box: payment terms agreed in writing; delivery time and method agreed; freight forwarder informed and standing by; inspection company briefed; warehouse or 3PL ready to receive; customs, GST and any licence or compliance questions clarified (for shipments over NZ$1,000 you'll need your Customs client code sorted through TSW); follow-up form created; and Chinese holidays checked — an order placed the week before a factory shutdown quietly loses a month.

None of this paperwork costs more than an hour or two. The absence of it can cost you a promotion, a season, or a US$50,000 air-freight bill that lands on your side of the table instead of theirs.

Key takeaways

• Follow the flow: negotiate → your PO → supplier's PI → verify → deposit. Never skip the verify step.
• Get the supplier to sign your PO with your terms — don't just countersign his PI.
• Two must-have clauses: delay penalties, and re-inspection after failure at the supplier's cost.
• Run a per-order checklist and keep every document filed from day one.

Related: How to Pay Chinese Suppliers Safely: T/T, Trade Assurance, PayPal, L/C, From Deposit to Dispatch: Monitoring Your Order During Production

Figure: The order-paperwork flow — whoever's document gets signed sets the rules.