Business Communication · Common Business Terminologies

Commercial and Trade Terms in Business Communication

Updated 11 October 2026 · Fact-checked

Commercial and trade terms are the words businesses use in buying, selling and shipping goods, such as invoice, debit note, credit note, bill of lading, consignment and letter of credit. To answer exam questions, define the term, say who issues it, to whom, why, and give a short example.

Understand Commercial and Trade Terms

Every sale creates a trail of documents. Each document has a name, a sender, a receiver and a purpose. Trade terms are the names of these documents and of the trade activities around them.

Start with the sale itself. The seller sends goods and an invoice, which lists goods, quantity, price and amount due. A proforma invoice is different. It is a preliminary quotation sent before the sale, so the buyer can approve, apply for import permission or arrange a letter of credit. It is not a demand for payment.

Now adjust mistakes or returns. A debit note is issued to say an amount is owed or has increased. A buyer may issue it to the seller when returning goods, and a seller may issue it to the buyer for extra charges. A credit note is issued to reduce what the buyer owes, for example for returned goods or a price reduction. The key is to ask whose account is being debited or credited and why.

For transport and trade types, a bill of lading is issued by a shipping company or its agent for goods sent by sea. It acts as a receipt for goods, evidence of the contract of carriage and, in many cases, a document of title. A consignment is goods sent to an agent (the consignee) who sells them for the owner (the consignor) and earns a commission, while ownership stays with the consignor. Wholesale means selling large quantities to retailers, and retail means selling small quantities to final consumers.

A letter of credit is a bank's written promise, issued at the buyer's request, to pay the seller if the seller presents the documents the credit requires. It lowers the seller's risk of non-payment, which is why it is common in international trade.

Key rules to remember

Invoice: Seller → Buyer: details of goods + amount due; A bill for a completed sale.
Proforma invoice: Seller → Buyer: quotation before sale; Not a demand for payment.
Debit note: Issued by the party who debits the other's account: the seller for extra charges, or the buyer on returning goods; When the seller raises extra charges, the amount receivable from the buyer increases. When the buyer returns goods, its debit note debits the seller's account and reduces the buyer's payable.
Credit note: Issued when amount owed falls, such as returns or allowances; Reduces the amount the buyer owes.
Bill of lading: Carrier → Shipper: receipt + contract evidence + title document; Used for sea carriage.
Consignment: Consignor → Consignee: goods sent for sale on commission; Ownership stays with the consignor.
Letter of credit: Buyer's bank → Seller: promise to pay against documents; Payment depends on meeting its conditions.

How to solve Commercial and Trade Terms questions

Use this method for any question that asks you to define, differentiate or apply a trade term.

1Read the question and mark the term or terms asked.
2Write a one-line definition in your own words.
3State who issues it and who receives it.
4State its purpose, meaning why it is used.
5Add a short example with a name and an amount in rupees.
6For difference questions, compare on 3 or 4 points: meaning, issued by, purpose, effect.
7End with one line on how it helps business communication or records.

Quickest way: Who, to whom, why

When to use it: Use for short answers and for MCQ-style recall where you must match a term to its meaning.

Ask who sends the document.
Ask who receives it.
Ask what changes: a sale, a higher dues, a lower dues, a shipment or a payment promise.
Match the word: sale bill is invoice, quotation is proforma, higher dues is debit note, lower dues is credit note, sea receipt is bill of lading, bank promise is letter of credit.

Common mistakes in Commercial and Trade Terms

Treating a proforma invoice as a demand for payment.
The word invoice suggests a bill.
Fix: Remember it is a quotation sent before the sale. The final invoice follows.
Mixing up debit note and credit note.
Students memorise names instead of effect.
Fix: Debit note raises the amount owed. Credit note lowers it. Always say who issues it and why.
Saying a bill of lading is only a receipt.
Textbook lines are shortened.
Fix: Give all three roles: receipt for goods, evidence of contract of carriage and document of title.
Saying the consignee owns the goods in consignment.
The goods are in the consignee's possession.
Fix: Ownership stays with the consignor until sale. The consignee is only an agent paid by commission.
Confusing wholesale with retail by place of sale.
Students think of shops versus godowns.
Fix: Decide by buyer and quantity. Wholesale is bulk to traders. Retail is small lots to consumers.
Writing a letter of credit as the buyer's promise to pay.
The buyer applies for it.
Fix: It is the bank's promise, given at the buyer's request.

Worked examples

Example 1

Differentiate between a debit note and a credit note with an example.

Show the solution

Define the debit note: a document issued by the party who debits the other's account. A seller issues it for extra charges, which increases the amount receivable from the buyer. A buyer issues it when returning goods, which debits the seller's account and reduces the buyer's payable.
Define the credit note: a document that reduces the amount owed by the buyer.
Compare issuer and effect: a seller's debit note for extra charges raises the buyer's dues, while a credit note lowers them. A buyer's debit note on a return records the reduction in what the buyer owes.
Give an example: Mehta Traders sells goods worth ₹50,000 to Rao Stores. Rao Stores returns goods worth ₹5,000 as defective.
Rao Stores issues a debit note for ₹5,000 to Mehta Traders. It debits Mehta Traders' account in Rao's books, so Rao's payable falls from ₹50,000 to ₹45,000.
Mehta Traders accepts the return and issues a credit note for ₹5,000, so Rao Stores now owes ₹50,000 − ₹5,000 = ₹45,000.

Answer: A debit note is issued by the party debiting the other's account. A seller's debit note for extra charges increases the amount receivable from the buyer. A buyer's debit note on a return reduces what the buyer owes. A credit note reduces the buyer's dues. In the example, the ₹5,000 return cuts the dues from ₹50,000 to ₹45,000.

Exam tips

Learn each term as a three-part line: meaning, who issues it, purpose.
In difference questions, give at least three points of difference in neat pairs.
Always add a small example with a rupee amount. It shows understanding and takes only two lines.
Be careful with pairs examiners love: invoice vs proforma, debit vs credit note, wholesale vs retail.
In Paper 1 answers, keep the language simple and correct, as grammar and clarity are also seen.

Practice questions from Common Business Terminologies

Commercial and Trade Terms in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Commercial and Trade Terms: frequently asked questions

What is the difference between a debit note and a credit note?

A debit note is issued by the party who debits the other's account. A seller issues it for extra charges, which increases the amount receivable from the buyer. A buyer issues it on returning goods, which reduces the buyer's payable. A credit note reduces the amount the buyer owes, as in a return or allowance.

What does a bill of lading mean?

It is a document issued by a carrier for goods shipped, usually by sea. It works as a receipt, as evidence of the contract of carriage and often as a document of title.

What is the difference between an invoice and a proforma invoice?

An invoice is issued after a sale and asks for payment. A proforma invoice is sent before the sale as a quotation. The buyer can use it for approvals or to arrange finance.

Is a letter of credit issued by the buyer or the bank?

It is issued by the buyer's bank at the buyer's request. The bank promises to pay the seller if the seller meets the stated conditions and presents the required documents.