What Are Pi / Ci / Pl? Trade Documents Explained in One Article
New exporters often get tangled in three abbreviations: Pi, Ci and Pl. They are the three most important documents in an export transaction — quoting, settlement and shipping all depend on them. This article explains in one pass: what each is, when to use it, what it must contain, and where beginners most often go wrong.
The one-line version
- Pi (Proforma Invoice): the quote confirmation — "here's how I propose to sell this to you".
- Ci (Commercial Invoice): the formal settlement document — "we've closed the deal; here's the official invoice".
- Pl (Packing List): the packing detail — "here's exactly how the goods are packed".
The three documents side by side
| Pi — Proforma | Ci — Commercial | Pl — Packing List | |
|---|---|---|---|
| Purpose | Quote confirmation; buyer uses it to arrange payment / import license | Customs clearance, settlement, bookkeeping | Customs clearance, receiving check |
| When issued | Negotiation stage, before ordering | When goods ship | When goods ship |
| Key contents | Products, price terms, payment method, validity | Transaction price, trade terms, buyer/seller info | Cartons, per-carton detail, gross/net weight, volume |
| Legal weight | Binds both sides' intent; not final settlement | Basis for formal settlement | Supporting document |
Pi: the most underestimated document
Beginners treat the Pi as "just a quote" — a screenshot will do. But for the buyer, the Pi is often the basis for requesting payment from their company, buying foreign exchange from their bank, or applying for an import license. A proper Pi should include: complete buyer/seller information, product model and description, unit and total price, trade terms (FOB/CIF etc.), payment method (T/T, L/C etc.), lead time, quote validity, and bank details.
One warning: always state a validity period (e.g. 30 days). When raw-material prices move, a Pi without validity locks you into an expired price.
Ci and Pl: the shipping combo
When goods ship, Ci and Pl go together to the customer and the freight forwarder. At customs, officers check whether the values on the Ci and the cartons and weights on the Pl match the actual cargo. Any inconsistency — say the packing list says 100 cartons but 98 ship — can trigger inspection, fines or even seizure.
The three mistakes beginners make
- Wrong or missing price terms: FOB vs CIF differs by sea freight and insurance. Leave terms off the Pi and the customer assumes the lowest interpretation — disputes follow.
- Inconsistent details across documents: customer name, shipping marks or carton counts differing between Pi, Ci and Pl. When customs flags it, the customer comes to you first.
- Hand-editing old documents: tweaking a number on a previous document and resending is how one missed field becomes a disaster. Regenerate a fresh PDF from current data every time — much safer.
Make documents a one-click job
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